{"id":21420,"date":"2026-03-25T16:32:41","date_gmt":"2026-03-25T08:32:41","guid":{"rendered":"https:\/\/nkmceramic.com\/?p=21420"},"modified":"2026-03-25T16:32:41","modified_gmt":"2026-03-25T08:32:41","slug":"what-is-pssic","status":"publish","type":"post","link":"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/","title":{"rendered":"What is PSSiC? Definition, Properties, and Applications"},"content":{"rendered":"<p>Among all industrial ceramic materials, silicon carbide has become the preferred one for extreme operating conditions. SiC provides excellent high-temperature and corrosion resistance. Pressureless Sintered Silicon Carbide, or PSSiC, is an important branch of silicon carbide. Achieving densification without external pressure, PSSiC is widely employed in various industries.<\/p>\n<p>This article will provide an introduction to the definition, properties, limitations, and applications of PSSiC. After reading this article, you will be able to determine whether PSSiC meets your production requirements.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Definition_and_Process_of_PSSiC\" >Definition and Process of PSSiC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Key_Characteristics_of_PSSiC\" >Key Characteristics of PSSiC<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Excellent_High-Temperature_Resistance\" >Excellent High-Temperature Resistance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Superior_Thermal_Performance\" >Superior Thermal Performance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#High_Hardness_and_Wear_Resistance\" >High Hardness and Wear Resistance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Chemical_Inertness\" >Chemical Inertness<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Structural_Stability\" >Structural Stability<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Limitations_of_PSSiC\" >Limitations of PSSiC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Applications_of_PSSiC\" >Applications of PSSiC<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Chemical_Industry\" >Chemical Industry<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Semiconductor_Manufacturing\" >Semiconductor Manufacturing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Military\" >Military<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#High-End_Optics\" >High-End Optics<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#FAQs\" >FAQs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/nkmceramic.com\/pt\/what-is-pssic\/#Reference\" >Reference<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2><span class=\"ez-toc-section\" id=\"Definition_and_Process_of_PSSiC\"><\/span><strong><b>Definition and Process of PSSiC<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The full name of <strong><b>PSSiC<\/b><\/strong>\u00a0is <strong><b>Pressureless Sintered Silicon Carbide<\/b><\/strong>. It is an advanced ceramic material made by sintering high-purity silicon carbide powder with sintering additives. Unlike reaction bonding or hot pressing, PSSiC does not require external pressure. Through sintering additives and high temperatures of about 1900\u2103-2200\u2103, PSSiC achieves dense bonding. It helps produce parts with a density close to the theoretical.<\/p>\n<p>Based on the mechanism of the additives, PSSiC has two categories: <strong><b>Solid-State Sintered Silicon Carbide<\/b><\/strong>\u00a0(SSiC) and <strong><b>Liquid-Phase Sintered Silicon Carbide<\/b><\/strong>\u00a0(LSiC).<\/p>\n<p>SSiC relies on additives to form a solid solution with silicon carbide, driving the sintering process. It has a pure grain boundary structure with stable high-temperature strength.<\/p>\n<p>LSiC promotes sintering through the eutectic liquid phase. It has a lower sintering temperature compared to SSiC. Therefore, the results have finer grains and better fracture toughness.<\/p>\n<p>The PSSiC production process requires high precision. Its main steps are shown below.<\/p>\n<figure id=\"attachment_21421\" aria-describedby=\"caption-attachment-21421\" style=\"width: 1280px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-21421 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/1-PSSiC-Production-Process-in-Simple.jpg\" alt=\"PSSiC Production Process (in Simple)\" width=\"1280\" height=\"720\" \/><figcaption id=\"caption-attachment-21421\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-21421 lazyload\" src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/1-PSSiC-Production-Process-in-Simple.jpg\" alt=\"PSSiC Production Process (in Simple)\" width=\"1280\" height=\"720\" srcset=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/1-PSSiC-Production-Process-in-Simple.jpg 1280w, https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/1-PSSiC-Production-Process-in-Simple-768x432.jpg 768w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/noscript> PSSiC Production Process (in Simple)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Key_Characteristics_of_PSSiC\"><\/span><strong><b>Key <\/b><\/strong><strong><b>Characteristics of PSSiC<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As a high-performance industrial ceramic, PSSiC possesses properties matching extreme working conditions. Compared to other types of silicon carbide, PSSiC offers some key advantages.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Excellent_High-Temperature_Resistance\"><\/span><strong><b>Excellent High-Temperature Resistance<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC exhibits outstanding high-temperature resistance. In an inert environment, PSSiC can reach a long-term service temperature of 1600\u2103. In the air, it can reach above 1400\u2103. The oxidation layer on PSSiC provides protection, making it suitable for various high-temperature operating conditions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Superior_Thermal_Performance\"><\/span><strong><b>Superior Thermal Performance<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC has excellent thermal shock resistance. Silicon carbide products made of PSSiC can withstand intense temperature fluctuations without cracks and deformation. It can help you achieve uniform heat transfer.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"High_Hardness_and_Wear_Resistance\"><\/span><strong><b>High Hardness and Wear Resistance<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC possesses extremely high Mohs hardness. It results in exceptional wear and erosion resistance. Using PSSiC can extend the service life of equipment components effectively and reduce maintenance costs.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chemical_Inertness\"><\/span><strong><b>Chemical Inertness<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC exhibits strong chemical stability. It can resist erosion from strong acids, strong alkalis, and molten metals. PSSiC parts can solve the problems of corrosion and leakage of metallic ones.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Structural_Stability\"><\/span><strong><b>Structural Stability<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC has high density and low porosity. Its stable structure can prevent the penetration of media. Under high-pressure and high-temperature conditions, PSSiC products are resistant to deformation. They can maintain highly stable strength and toughness under a harsh industrial environment.<\/p>\n<p>Here is a table shows the key performance parameters of PSSiC. You can review this table to find whether to PSSiC\u00a0is suitable for your industry.<\/p>\n<table>\n<tbody>\n<tr>\n<td rowspan=\"2\" width=\"298\"><strong><b>Item<\/b><\/strong><\/td>\n<td rowspan=\"2\" width=\"148\"><strong><b>Unit<\/b><\/strong><\/td>\n<td width=\"120\"><strong><b>Data<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"120\"><strong><b>PSSiC<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Density<\/td>\n<td width=\"148\">g\/cm<sup>3<\/sup><\/td>\n<td width=\"120\">3.12<\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Fracture Toughness<\/td>\n<td width=\"148\">MPa\u00b7m<sup>1\/2<\/sup><\/td>\n<td width=\"120\">3.2<\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Bending Strength 20\u2103<\/td>\n<td width=\"148\">Mpa<\/td>\n<td width=\"120\">410<\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Bending Strength 1,400\u2103<\/td>\n<td width=\"148\">Mpa<\/td>\n<td width=\"120\">410<\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Modulus of Elasticity<\/td>\n<td width=\"148\">Gpa<\/td>\n<td width=\"120\">410<\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Coefficient of Thermal Expansion<\/td>\n<td width=\"148\">K<sup>-1<\/sup>\u00d710<sup>-6<\/sup><\/td>\n<td width=\"120\">4.7<\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Thermal Conductivity 20\u2103<\/td>\n<td width=\"148\">W\/m\u00b7k<\/td>\n<td width=\"120\">110<\/td>\n<\/tr>\n<tr>\n<td width=\"298\">Thermal Conductivity 1,000\u2103<\/td>\n<td width=\"148\">W\/m\u00b7k<\/td>\n<td width=\"120\">45<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Limitations_of_PSSiC\"><\/span><strong><b>Limitations of PSSiC<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>PSSiC still has certain limitations. High sintering temperature up to 1900\u2103 will bring higher energy consumption and costs. Secondly, PSSiC is not suitable for high loads or strong impact conditions. Moreover, because of its high hardness and brittleness, the processing difficulty of PSSiC is relatively high. Achieving sintering densification is also challenging. Large-scale PSSiC products are prone to non-uniform performance, making the preparation more difficult.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Applications_of_PSSiC\"><\/span><strong><b>Application<\/b><\/strong><strong><b>s <\/b><\/strong><strong><b>of PSSiC<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Compared to RBSiC, PSSiC has a higher purity with SiC \u226598%. It maintains excellent high-temperature strength even above 1600\u2103. It also possesses good corrosion resistance and thermal conductivity. PSSiC is widely used in high-end industrial fields.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chemical_Industry\"><\/span><strong><b>Chemical Industry<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC has excellent corrosion resistance and high-temperature resistance, perfectly solving the problems in chemical production. <a href=\"https:\/\/nkmceramic.com\/silicon-carbide-heat-exchanger\/\"><u>PSSiC corrosion-resistant heat exchange tubes<\/u><\/a>\u00a0can withstand erosion from strong acids and strong alkalis. Using them will greatly reduce the risk of leakage and improve heat exchange efficiency.<\/p>\n<p><a href=\"https:\/\/nkmceramic.com\/silicon-carbide-nozzle\/\"><u>PSSiC high-temperature nozzles<\/u><\/a>\u00a0can withstand erosion at temperatures above 1600\u2103. It can maximize the service life of your equipment and reduce maintenance costs. In addition, <a href=\"https:\/\/nkmceramic.com\/silicon-carbide-seal-ring\/\"><u>mechanical seal rings<\/u><\/a>\u00a0in pumps and valves can also use PSSiC. It helps you reduce wear and leakage, assisting you in dealing with extreme corrosion conditions.<\/p>\n<figure id=\"attachment_21422\" aria-describedby=\"caption-attachment-21422\" style=\"width: 1280px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-21422 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/2-Newthink-PSSiC-Burner-Nozzle-Drawing.jpg\" alt=\"Newthink PSSiC Burner Nozzle Drawing\" width=\"1280\" height=\"720\" \/><figcaption id=\"caption-attachment-21422\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-21422 lazyload\" src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/2-Newthink-PSSiC-Burner-Nozzle-Drawing.jpg\" alt=\"Newthink PSSiC Burner Nozzle Drawing\" width=\"1280\" height=\"720\" srcset=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/2-Newthink-PSSiC-Burner-Nozzle-Drawing.jpg 1280w, https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/2-Newthink-PSSiC-Burner-Nozzle-Drawing-768x432.jpg 768w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/noscript> Newthink PSSiC Burner Nozzle Drawing<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Semiconductor_Manufacturing\"><\/span><strong><b>Semiconductor Manufacturing<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC\u2019s high purity (\u226598%) meets the strict requirements of wafer production. Semiconductor manufacturing needs extremely high standards of material purity and cleanliness. <a href=\"https:\/\/nkmceramic.com\/silicon-carbide-parts\/\"><u>PSSiC semiconductor wafer carriers<\/u><\/a>\u00a0are suitable for high-temperature processes such as wafer sintering and etching.<\/p>\n<p>Besides preventing contamination, with its high-precision processing capabilities, PSSiC wafer carriers provide stable support. It can improve semiconductor product yield. The high-voltage resistance and low-loss characteristics make it widely used in semiconductor power devices.<\/p>\n<figure id=\"attachment_21423\" aria-describedby=\"caption-attachment-21423\" style=\"width: 1280px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-21423 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/3-PSSiC-Wafer-Carrier-Applications.jpg\" alt=\"PSSiC Wafer Carrier Applications\" width=\"1280\" height=\"720\" \/><figcaption id=\"caption-attachment-21423\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-21423 lazyload\" src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/3-PSSiC-Wafer-Carrier-Applications.jpg\" alt=\"PSSiC Wafer Carrier Applications\" width=\"1280\" height=\"720\" srcset=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/3-PSSiC-Wafer-Carrier-Applications.jpg 1280w, https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/3-PSSiC-Wafer-Carrier-Applications-768x432.jpg 768w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/noscript> PSSiC Wafer Carrier Applications<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Military\"><\/span><strong><b>Military<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC possesses extremely high hardness, impact toughness, and lightweight. It is an ideal material for high-end ballistic armor. Military equipment has strict requirements for armor\u2019s protective performance and weight. Compared to metal one, <a href=\"https:\/\/nkmceramic.com\/silicon-carbide-armor\/\"><u>PSSiC armor<\/u><\/a>\u00a0offers superior protection and lower weight. It can resist the impact of high-speed projectiles effectively and reduce the loads, providing reliable defense.<\/p>\n<figure id=\"attachment_21424\" aria-describedby=\"caption-attachment-21424\" style=\"width: 1280px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-21424 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/4-PSSiC-Armor.jpg\" alt=\"PSSiC Armor\" width=\"1280\" height=\"720\" \/><figcaption id=\"caption-attachment-21424\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-21424 lazyload\" src=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/4-PSSiC-Armor.jpg\" alt=\"PSSiC Armor\" width=\"1280\" height=\"720\" srcset=\"https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/4-PSSiC-Armor.jpg 1280w, https:\/\/nkmceramic.com\/wp-content\/uploads\/2026\/03\/4-PSSiC-Armor-768x432.jpg 768w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/noscript> PSSiC Armor<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"High-End_Optics\"><\/span><strong><b>High-End Optics<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PSSiC has a low expansion coefficient, high structural stability, and excellent thermal shock resistance to meet your requirements in the high-end optics field. Components such as optical mirrors place high demands on the flatness, thermal stability, and structural strength of the substrate. PSSiC optical mirror substrates maintain high precision even in extreme temperature differentials. By using it, you will not need frequent calibration. Therefore, PSSiC optical mirrors are widely used in aerospace remote sensing and high-end optical instrumentation.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong><b>Conclusion<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>PSSiC has become an ideal choice for high-end industrial fields. Its unique process without external pressure satisfies the special needs of various high-end productions. If your industry has highly strict requirements for material purity, high-temperature strength, and corrosion resistance, PSSiC is undoubtedly a highly cost-effective choice. Until now, PSSiC has achieved large-scale application in fields like chemical engineering, semiconductors, and the military.<\/p>\n<p>Unsure whether PSSiC is suitable for your operation? Feel free to contact <a href=\"https:\/\/nkmceramic.com\/\"><u>Newthink New Materials<\/u><\/a>. With 14 years of experience in the advanced ceramics industry, we can help you match the appropriate type of <a href=\"https:\/\/nkmceramic.com\/silicon-carbide-ceramic\/\"><u>silicon carbide<\/u><\/a>\u00a0quickly.<\/p>\n<p>Thanks for your reading. Hope this article will be helpful to you.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span><strong><b>FAQs<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li><strong><b> What is sintering?<\/b><\/strong><\/li>\n<\/ol>\n<p>Sintering is one of the thermal processes. It bonds particles into solid by heat, turning powder into a dense, strong part.<\/p>\n<ol start=\"2\">\n<li><strong><b> What is pressureless sintering?<\/b><\/strong><\/li>\n<\/ol>\n<p>It is a densification process without external pressure. Materials bond at high temperatures with additives.<\/p>\n<ol start=\"3\">\n<li><strong><b> What is silicon carbide material?<\/b><\/strong><\/li>\n<\/ol>\n<p>Silicon carbide is an advanced industrial ceramic. It performs excellently in high-temperature and corrosive environments, ideal for harsh conditions.<\/p>\n<ol start=\"4\">\n<li><strong><b> What is pressureless sintering silicon carbide (PSSiC)?<\/b><\/strong><\/li>\n<\/ol>\n<p>PSSiC is a high-purity ceramic made without external pressure. It maintains exceptional strength even above 1600\u2103.<\/p>\n<ol start=\"5\">\n<li><strong><b> Why is sintering necessary?<\/b><\/strong><\/li>\n<\/ol>\n<p>Sintering creates structural integrity. It decreases porosity to achieve high density, ensuring the material withstands stress.<\/p>\n<ol start=\"6\">\n<li><strong><b> What are the benefits of SiC?<\/b><\/strong><\/li>\n<\/ol>\n<p>SiC possesses high hardness with excellent wear, corrosion resistance, and thermal performance. SiC can remain stable even under extreme heat. It also provides excellent chemical inertness.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Reference\"><\/span><strong><b>Reference<\/b><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>[1] <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0955221914003343\"><u>Magnani, G., Sico, G., Brentari, A., &amp; Fabbri, P. (2014). Solid-state pressureless sintering of silicon carbide below 2000 C.\u00a0<\/u><em><u><i>Journal of the European Ceramic Society<\/i><\/u><\/em><u>,\u00a0<\/u><em><u><i>34<\/i><\/u><\/em><u>(15), 4095-4098.<\/u><\/a><\/p>\n<p>[2] <a href=\"https:\/\/ceramics.onlinelibrary.wiley.com\/doi\/abs\/10.1111\/ijac.13805\"><u>Maity, T., &amp; Kim, Y. W. (2022). High\u2010temperature strength of liquid\u2010phase\u2010sintered silicon carbide ceramics: a review.\u00a0<\/u><em><u><i>International Journal of Applied Ceramic Technology<\/i><\/u><\/em><u>,\u00a0<\/u><em><u><i>19<\/i><\/u><\/em><u>(1), 130-148.<\/u><\/a><\/p>\n<p>[3] <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0272884216315504\"><u>Raju, K., &amp; Yoon, D. H. (2016). Sintering additives for SiC based on the reactivity: a review.\u00a0<\/u><em><u><i>Ceramics International<\/i><\/u><\/em><u>,\u00a0<\/u><em><u><i>42<\/i><\/u><\/em><u>(16), 17947-17962.<\/u><\/a><\/p>\n<p>[4] <a href=\"https:\/\/journals.sagepub.com\/doi\/abs\/10.1080\/17436753.2019.1574285\"><u>Zhang, W., Yamashita, S., &amp; Kita, H. (2019). Progress in pressureless sintering of boron carbide ceramics\u2013a review.\u00a0<\/u><em><u><i>Advances in Applied Ceramics<\/i><\/u><\/em><u>,\u00a0<\/u><em><u><i>118<\/i><\/u><\/em><u>(4), 222-239.<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Among all industrial ceramic materials, silicon carbide has become the preferred one for extreme operating conditions. SiC provides excellent high-temperature and corrosion resistance. Pressureless Sintered Silicon Carbide, or PSSiC, is an important branch of silicon carbide. Achieving densification without external pressure, PSSiC is widely employed in various industries. This article [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":21421,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"disabled","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21420","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is PSSiC? 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