Silisyum Karb\u00fcr piyasadaki en sert ve en dayan\u0131kl\u0131 seramik malzemelerden biridir ve korozyon, a\u015f\u0131nma ve y\u00fcksek s\u0131cakl\u0131klara kar\u015f\u0131 koruma sa\u011flar.<\/p>\n
Reaksiyona ba\u011fl\u0131 silisyum karb\u00fcr, g\u00f6zenekli karbonun s\u0131v\u0131 veya gaz silisyum ile reaksiyona sokulmas\u0131 ve yo\u011fun bir seramik par\u00e7a olu\u015fturmak i\u00e7in ilave silisyum ile infiltre edilmesiyle \u00fcretilir.<\/p>\n
Nitr\u00fcr Ba\u011fl\u0131 Silisyum Karb\u00fcr (NB SiC), g\u00fc\u00e7l\u00fc, esnek ve dayan\u0131kl\u0131 bir malzeme olu\u015fturmak i\u00e7in seramik faz\u0131 olarak silisyum karb\u00fcr nitr\u00fcrden olu\u015fan kompozit bir refrakter malzemedir. G\u00fcn\u00fcm\u00fczde mevcut olan en sert m\u00fchendislik malzemelerinden biri olan NB SiC, par\u00e7ac\u0131klardan veya y\u00fczeyler gibi sert y\u00fczeylerden kaynaklanan a\u015f\u0131nmaya kar\u015f\u0131 diren\u00e7lidir. Ayr\u0131ca, kimyasal inertli\u011fi \u00e7o\u011fu asit, alkaliler ve halojen\u00fcrlere kar\u015f\u0131 diren\u00e7li kalmas\u0131n\u0131 sa\u011flarken, son derece s\u00fcnektir ve a\u011f\u0131r y\u00fcklere ve darbelere dayanabilir.<\/p>\n
Nitr\u00fcr ba\u011fl\u0131 silisyum karb\u00fcr, Blasch i\u015flemi ile kolayca karma\u015f\u0131k ve hassas \u015fekillere d\u00f6n\u00fc\u015ft\u00fcr\u00fclebilir, bu da hem refrakter hem de mekanik \u00f6zellikler gerektiren uygulamalarda kullan\u0131lmas\u0131n\u0131 sa\u011flar. Ayr\u0131ca, k\u0131r\u0131lma toklu\u011fu sinterlenmi\u015f SiC'ninkini a\u015far, bu da onu a\u015f\u0131nma ve darbe stresi i\u00e7eren zorlu ortamlar i\u00e7in uygun hale getirir.<\/p>\n
Silisyum karb\u00fcr \u00fcretimi i\u00e7in iki y\u00f6ntem oldu\u011funu unutmay\u0131n: reaksiyon ba\u011flama ve sinterleme. Her bir \u015fekillendirme y\u00f6ntemi, son \u00fcr\u00fcn\u00fcn mikro yap\u0131s\u0131n\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde etkiler ve yaln\u0131zca sinterleme yoluyla \u00fcretilenden farkl\u0131 termal ve mekanik \u00f6zelliklere yol a\u00e7ar. A\u015fa\u011f\u0131da bu \u015fekillendirme tekniklerinin her birinin bir tasla\u011f\u0131 bulunmaktad\u0131r:<\/p>\n
Reaksiyona ba\u011fl\u0131 silisyum karb\u00fcr, SiC ve karbon kar\u0131\u015f\u0131mlar\u0131 i\u00e7eren bir kompakt i\u00e7ine s\u0131v\u0131 silisyum eklenerek olu\u015fturulur, SiC'nin ilk tanelerini birbirine ba\u011flarken ek silisyum karb\u00fcr taneleri olu\u015fturmak i\u00e7in karbonla reaksiyona girer. Bir kez olu\u015fturulduktan sonra, bu malzeme \u00e7e\u015fitli \u015fekil ve boyutlarda kolayca \u015fekillendirilebilir, bu da onu f\u0131r\u0131n mobilyalar\u0131, mekanik contalar ve ak\u0131\u015f kontrol bobinleri gibi uygulamalar i\u00e7in uygun hale getirir.<\/p>\n
Nitr\u00fcr ba\u011fl\u0131 silisyum karb\u00fcr, a\u015f\u0131nma direnci i\u00e7eren uygulamalar i\u00e7in uzun s\u00fcredir kullan\u0131lmaktad\u0131r; ancak, toprak ko\u015fullar\u0131nda erozyon direnci testlerinde, hem gev\u015fek hem de yo\u011fun toprak ko\u015fullar\u0131nda sinterlenmi\u015f bor i\u00e7eren \u00e7elik \u00fcr\u00fcnlere kar\u015f\u0131 \u00fcst\u00fcn bir performans g\u00f6sterdi\u011fini kan\u0131tlam\u0131\u015ft\u0131r.<\/p>\n
Reaksiyon yap\u0131\u015ft\u0131rma, sinterlenmi\u015f silisyum karb\u00fcrden (SSC) daha ucuz \u00fcretim s\u00fcre\u00e7leri kullanarak herhangi bir \u015fekil veya boyutta silisyum karb\u00fcr seramik par\u00e7alar \u00fcretmek i\u00e7in kullan\u0131lan yenilik\u00e7i bir tekniktir. Bu teknoloji kullan\u0131larak \u00fcretilen refrakter seramikler mukavemetleri, korozyon diren\u00e7leri ve a\u015f\u0131r\u0131 s\u0131cakl\u0131klara dayan\u0131kl\u0131l\u0131klar\u0131yla bilinir - bu nitelikler onlar\u0131 f\u0131r\u0131n mobilyalar\u0131 gibi \u0131s\u0131tma cihazlar\u0131n\u0131n yan\u0131 s\u0131ra contalar ve valfler gibi a\u015f\u0131nma bile\u015fenleri i\u00e7in uygun hale getirir.<\/p>\n
Bu teknoloji kullan\u0131larak \u00fcretilen refrakter seramikler \u00fcst\u00fcn termal \u015fok diren\u00e7leriyle bilinmektedir. E\u011filme ve k\u0131r\u0131lma toklu\u011fu, reaksiyona ba\u011fl\u0131 silisyum karb\u00fcr\u00fcn kat\u0131 i\u00e7eri\u011findeki art\u0131\u015fla artar; bu malzeme, g\u00f6zenekli karbon veya grafit ile erimi\u015f silikon aras\u0131ndaki kimyasal reaksiyon nedeniyle olu\u015fur; ana k\u0131r\u0131lma modu, SiC'nin taneler aras\u0131 k\u0131r\u0131lmas\u0131n\u0131n yan\u0131 s\u0131ra art\u0131k karbon par\u00e7ac\u0131klar\u0131ndan kaynaklanan k\u0131r\u0131lgan k\u0131r\u0131lmay\u0131 i\u00e7erir.<\/p>\n
Reaksiyona ba\u011fl\u0131 silisyum karb\u00fcr elde etmek i\u00e7in, \u00f6nce kaba silisyum karb\u00fcr tozu ve oksit olmayan sinterleme yard\u0131mc\u0131lar\u0131n\u0131 2000F'ye ula\u015fana kadar \u0131s\u0131tmadan \u00f6nce birle\u015ftirin. Bu ad\u0131m\u0131 takiben, kar\u0131\u015f\u0131m\u0131 tamamlamak i\u00e7in hassas \u00f6\u011f\u00fctme teknikleri kullan\u0131labilir.<\/p>\n
Reaksiyonla ba\u011flanm\u0131\u015f silisyum karb\u00fcr\u00fcn jel d\u00f6k\u00fcm\u00fcn\u00fcn bir par\u00e7as\u0131 olarak, furfuril alkol (FA) ve fenolik re\u00e7ine aras\u0131ndaki oran, polimerizasyon ve jel s\u00fcresi modifikasyonunu kolayla\u015ft\u0131rmak i\u00e7in ayarland\u0131. Ayr\u0131ca, mikro g\u00f6zenekli karbonun hem jel s\u00fcresi hem de g\u00f6zenek morfolojisi incelenmi\u015f; her ikisinin de reaktif olarak ba\u011flanm\u0131\u015f silisyum karb\u00fcr yap\u0131lar\u0131n\u0131n olu\u015fturulmas\u0131nda etkili oldu\u011fu kan\u0131tlanm\u0131\u015ft\u0131r.<\/p>\n
Bu teknoloji kullan\u0131larak \u00fcretilen refrakter seramikler RBSC olarak bilinmektedir. \u015eekil 9, bu i\u015flem kullan\u0131larak \u00fcretilen farkl\u0131 kat\u0131 y\u00fcklemelerine sahip SiC\/g\u00f6zenekli karbon g\u00f6vdelerinin XRD modellerini g\u00f6stermektedir; sonu\u00e7lar, daha y\u00fcksek kat\u0131 i\u00e7eri\u011fine sahip olanlar\u0131n, bu refrakter seramiklerde hem a-SiC faz\u0131 hem de b-SiC faz\u0131 i\u00e7in artan pik yo\u011funluklar\u0131 ile kan\u0131tland\u0131\u011f\u0131 \u00fczere daha az serbest Si i\u00e7erdi\u011fini g\u00f6stermektedir.<\/p>\n
Reaksiyona ba\u011fl\u0131 silisyum karb\u00fcr (RBSC), a\u015f\u0131r\u0131 s\u0131cakl\u0131klara dayanabilmesinin yan\u0131 s\u0131ra ola\u011fan\u00fcst\u00fc g\u00fc\u00e7 ve sertli\u011fe sahip yenilik\u00e7i bir seramik malzemedir. Bu \u00f6zellikleri nedeniyle RBC, f\u0131r\u0131n mobilyalar\u0131, mekanik contalar ve yar\u0131 iletken \u00fcretim ekipman\u0131 uygulamalar\u0131nda m\u00fckemmel bir malzeme se\u00e7imidir.<\/p>\n
RB SiC tipik olarak SiC tozunun bir kal\u0131pta karbon ve plastikle\u015ftirici ile kar\u0131\u015ft\u0131r\u0131lmas\u0131, plastikle\u015ftiricinin uzakla\u015ft\u0131r\u0131lmas\u0131 i\u00e7in ate\u015flenmesi ve ilave silisyum karb\u00fcr olu\u015fturmak i\u00e7in karbonla reaksiyona giren s\u0131v\u0131 veya buhar silisyum ile a\u015f\u0131lanmas\u0131yla olu\u015fturulur - bu, m\u00fckemmel a\u015f\u0131nma ve darbe direncine sahip son derece yo\u011fun, y\u00fcksek performansl\u0131 bir \u00fcr\u00fcnle sonu\u00e7lan\u0131r.<\/p>\n
Karbon kaynaklar\u0131n\u0131n bile\u015fimi, morfolojisi ve boyutu, RB SiC seramiklerinin mikro yap\u0131s\u0131n\u0131 ve \u00f6zelliklerini \u015fekillendirmede b\u00fcy\u00fck rol oynamaktad\u0131r. Genel olarak, \u00f6n kal\u0131pta daha fazla karbon i\u00e7eri\u011fi, nihai seramikte daha fazla RB SiC konsantrasyonu ile sonu\u00e7lan\u0131r. Ayr\u0131ca, reaktiflikleri de bu s\u00fcre\u00e7te etkili bir varl\u0131\u011fa sahiptir: y\u00fcksek reaktif grafitten daha az reaktif mikro-k\u00fcresel karbona kadar.<\/p>\n
Uygulaman\u0131z i\u00e7in hangi SiC t\u00fcr\u00fcn\u00fcn uygun oldu\u011fu, sertlik, yo\u011funluk ve korozyon direnci gereksinimleri gibi kullan\u0131m amac\u0131na ba\u011fl\u0131 olacakt\u0131r. Hem nitr\u00fcr ba\u011fl\u0131 hem de reaksiyon ba\u011fl\u0131 silisyum karb\u00fcr, zorlu ortamlarda ola\u011fan\u00fcst\u00fc performans sunar.<\/p>\n
Presleme ve sinterleme yoluyla \u00fcretilen sinterlenmi\u015f silisyum karb\u00fcr (SSiC), mukavemet ve sertlik a\u00e7\u0131s\u0131ndan RB SiC'yi g\u00f6lgede b\u0131rak\u0131r; ancak, \u00fcretim i\u00e7in \u00e7ok daha y\u00fcksek s\u0131cakl\u0131klar gerektiren daha karma\u015f\u0131k sinterleme i\u015flemleri nedeniyle termal iletkenli\u011fi daha d\u00fc\u015f\u00fckt\u00fcr; ayr\u0131ca bu malzemenin gerektirdi\u011fi karma\u015f\u0131k \u00fcretim y\u00f6ntemleri nedeniyle daha maliyetlidir - bu nedenle baz\u0131 uygulamalar\u0131 bu form i\u00e7in uygun hale getirmez. Neyse ki Saint-Gobain Performans Seramikleri ve Refrakterleri, \u00f6zel gereksinimleri kar\u015f\u0131lamak i\u00e7in \u00f6zel olarak tasarlanm\u0131\u015f end\u00fcstriyel s\u0131n\u0131f a\u015f\u0131nmaya dayan\u0131kl\u0131 \u00fcr\u00fcnlerimizle uygulaman\u0131z i\u00e7in uygun serami\u011fi se\u00e7menize yard\u0131mc\u0131 olabilir - daha fazla bilgi veya uygulaman\u0131za karar vermenize yard\u0131mc\u0131 olmas\u0131 i\u00e7in bug\u00fcn aray\u0131n!<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide is one of the hardest and most durable ceramic materials on the market, providing protection from corrosion, wear, and high temperatures. Reaction-bonded silicon carbide is produced by reacting porous carbon with liquid or gaseous silicon and infiltrating it with additional silicon to create a dense ceramic part. Nitride Bonded Silicon Carbide (NB SiC) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","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":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","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-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-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-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-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-gradient":""}},"footnotes":""},"categories":[64],"tags":[],"class_list":["post-84","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/84","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/comments?post=84"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/84\/revisions"}],"predecessor-version":[{"id":85,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/84\/revisions\/85"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/media?parent=84"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/categories?post=84"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/tags?post=84"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}