Silisyum karb\u00fcr tozu, sertli\u011fi nedeniyle ta\u015flama, honlama, su jeti ile kesme ve kumlama gibi a\u015f\u0131nd\u0131r\u0131c\u0131 i\u015fleme s\u00fcre\u00e7lerinde yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Ayr\u0131ca kur\u015fun ge\u00e7irmez yeleklerde mermi darbelerini absorbe etmek i\u00e7in silisyum karb\u00fcr kullan\u0131l\u0131r.<\/p>\n
Karborundum kum, modern lapidary uygulamalar\u0131nda yayg\u0131n olarak kullan\u0131lan bir a\u015f\u0131nd\u0131r\u0131c\u0131d\u0131r. Ayr\u0131ca, karborundum kolagraf bask\u0131 tekni\u011finin bir par\u00e7as\u0131 olarak da bulunabilir.<\/p>\n
Silisyum karb\u00fcr tozu, sentetik olarak \u00fcretilen, sert, kristalin bir silikon ve karbon bile\u015fi\u011fidir ve Mohs \u00f6l\u00e7e\u011finde 9,5 sertlik derecesine sahiptir ve en sert yayg\u0131n a\u015f\u0131nd\u0131r\u0131c\u0131 malzemelerden biri olarak elmas ve korindon aras\u0131nda yer al\u0131r. Ta\u015flama, kumlama, lepleme ve y\u00fcksek s\u0131cakl\u0131klarda kimyasal diren\u00e7 i\u00e7in kullan\u0131lan silisyum karb\u00fcr, a\u015f\u0131nd\u0131r\u0131c\u0131 bir malzeme olarak \u00e7ok say\u0131da uygulamaya sahiptir.<\/p>\n
Edward Acheson ilk olarak 1891 y\u0131l\u0131nda kil (al\u00fcminyum silikat) ve toz kok kar\u0131\u015f\u0131m\u0131n\u0131 elektrikle \u0131s\u0131tt\u0131\u011f\u0131nda yapay olarak moisanit sentezlemi\u015ftir. Acheson kar\u0131\u015f\u0131m\u0131n\u0131 elektrikle \u0131s\u0131t\u0131rken k\u00fc\u00e7\u00fck siyah kristaller g\u00f6zlemlemi\u015ftir; Acheson bile\u015fi\u011finin korindona (sertlik bak\u0131m\u0131ndan elmasa benzeyen de\u011ferli bir ta\u015f) benzedi\u011fine inan\u0131rken, Nobel \u00f6d\u00fcll\u00fc kimyager Henri Moissan daha sonra Kaliforniya'daki Diablo Kanyonu'nda \u015feffaf mineral moisanit kristalleri olarak do\u011fal formunu g\u00f6zlemlemi\u015ftir.<\/p>\n
SiC, a\u015f\u0131r\u0131 y\u00fcksek s\u0131cakl\u0131klara \u0131s\u0131t\u0131ld\u0131\u011f\u0131nda m\u00fckemmel stabilite ve d\u00fc\u015f\u00fck termal genle\u015fmeye sahip m\u00fckemmel bir refrakter seramiktir ve bu a\u015f\u0131r\u0131 s\u0131cakl\u0131klarda kimyasal safl\u0131k ve oksidasyona kar\u015f\u0131 diren\u00e7 sunar. Sonu\u00e7 olarak SiC, yar\u0131 iletken f\u0131r\u0131nlarda, end\u00fcstriyel f\u0131r\u0131nlarda, roket motorlar\u0131nda ve \u0131\u015f\u0131k yayan diyot substratlar\u0131nda gofret tepsisi deste\u011fi ve k\u00fcrek olarak yayg\u0131n \u015fekilde kullan\u0131lmaktad\u0131r. Panadyne'in ye\u015fil silisyum karb\u00fcr\u00fc, JIS, ISO ve FEPA standartlar\u0131n\u0131 a\u015farak 99%'nin \u00fczerinde safl\u0131\u011fa ula\u015fm\u0131\u015ft\u0131r!<\/p>\n
Silisyum Karb\u00fcr (SiC), 9 Mohs sertlik derecesi ile mevcut en sert malzemelerden biridir. Ayr\u0131ca bu kadar sert olmas\u0131na ra\u011fmen m\u00fckemmel termal iletkenlik sergiler ve kendisine veya yak\u0131ndaki yap\u0131lara zarar vermeden y\u00fcksek s\u0131cakl\u0131klarda \u00e7al\u0131\u015fabilir.<\/p>\n
SiC iki ana y\u00f6ntemle olu\u015fturulur - reaksiyon ba\u011flama veya sinterleme. Her iki s\u00fcre\u00e7 de nihai SiC \u00fcr\u00fcnlerinin mikro yap\u0131s\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde etkiler; reaksiyonla ba\u011flanm\u0131\u015f SiC, karbon-silikon kar\u0131\u015f\u0131m\u0131n\u0131n kompaktlar\u0131na, ilk partik\u00fclleri birbirine ba\u011flayan s\u0131v\u0131 silikon s\u0131zd\u0131r\u0131larak yap\u0131labilirken, sinterleme, toz SiC'nin inert bir ortamda en az bir saat boyunca 2000oC'yi a\u015fan s\u0131cakl\u0131klarda pi\u015firilmesini i\u00e7erir.<\/p>\n
Her iki y\u00f6ntem de katmanl\u0131 kristal yap\u0131lara sahip SiC k\u00fcl\u00e7eleri \u00fcretir ve bunlar daha sonra a\u015f\u0131nd\u0131r\u0131c\u0131lar, refrakterler ve metal\u00fcrji gibi uygulamalarda \u00e7e\u015fitli kullan\u0131mlar i\u00e7in uygun olan ye\u015fil veya siyah SiC haline gelmek \u00fczere kesilir ve ayr\u0131l\u0131r.<\/p>\n
Raman spektroskopisi alt\u0131nda, SiC mikro tozlar\u0131 tipik olarak hem enine optik (TO) hem de boyuna optik (LO) fononlara kar\u015f\u0131l\u0131k gelen g\u00fc\u00e7l\u00fc pikler sergiler; bu da sentezlenen malzemelerinin 3C poli tipine ait oldu\u011funu g\u00f6sterir.<\/p>\n
Silisyum karb\u00fcr\u00fcn do\u011fal mineral formu olan Moissanite son derece nadirdir ve yaln\u0131zca meteoritler, korindon yataklar\u0131 ve kimberlitlerde s\u0131n\u0131rl\u0131 miktarda bulunur. G\u00fcn\u00fcm\u00fczde ticari olarak sat\u0131lan \u00e7o\u011fu SiC (Moissanite m\u00fccevherler dahil) sentetiktir. Yapay silisyum karb\u00fcr \u00fcretimi 1891 civar\u0131nda ba\u015flam\u0131\u015f ve k\u0131sa bir s\u00fcre sonra bu malzeme kullan\u0131larak end\u00fcstriyel a\u015f\u0131nd\u0131r\u0131c\u0131lar \u00fcretilmi\u015ftir; ilk radyo dedekt\u00f6rlerinde ve \u0131\u015f\u0131k yayan diyotlarda (LED'ler) da kullan\u0131lm\u0131\u015ft\u0131r.<\/p>\n
Silisyum karb\u00fcr kimyasal olarak inerttir ve \u00e7o\u011fu asit (hidroklorik, s\u00fclf\u00fcrik ve hidroflorik) ve baz (konsantre sodyum hidroksitler) taraf\u0131ndan korozyona kar\u015f\u0131 diren\u00e7lidir. Ayr\u0131ca sertli\u011fi, kuvarsdan yap\u0131lm\u0131\u015f yar\u0131 iletkenle ilgili yonga plakas\u0131 i\u015fleme aparatlar\u0131n\u0131 desteklemek i\u00e7in idealdir; ancak bu malzeme y\u00fcksek s\u0131cakl\u0131klarda deforme olur ve \u00e7ok uzun s\u00fcre maruz kal\u0131rsa hidroflorik asit gibi kimyasallarla temizlendi\u011finde a\u015f\u0131n\u0131r. Silisyum karb\u00fcr\u00fcn kimyasal inertli\u011fi de onu direnci nedeniyle m\u00fckemmel bir destek malzemesi haline getirir.<\/p>\n
Silisyum karb\u00fcr do\u011fal olarak mozanit olarak bilinen \u015feffaf mineral olarak bulunur. \u0130lk kez 1893 y\u0131l\u0131nda Nobel \u00d6d\u00fcll\u00fc kimyager Henri Moissan taraf\u0131ndan Canyon Diablo b\u00f6lgesindeki bir Arizona meteorunda kristal olmayan bir malzeme olarak tan\u0131mlanan silisyum karb\u00fcr, bu ke\u015fifle do\u011fada ilk kez g\u00f6r\u00fclm\u00fc\u015ft\u00fcr.<\/p>\n
RSiC, Si'nin C'ye oran\u0131 4:1 ve yo\u011funlu\u011fu 3,21 g cm-3 olan silikon ve karbondan olu\u015fan seramik bir bile\u015fiktir. Suda \u00e7\u00f6z\u00fcnmemesine ra\u011fmen, bu malzeme alkalilerde (NaOH veya KOH) ve demir i\u00e7eren \u00e7\u00f6zeltilerde (NaF) \u00e7\u00f6z\u00fclebilir.<\/p>\n
RSiC genellikle ta\u015flama, honlama ve su jeti ile kesme gibi \u00e7e\u015fitli a\u015f\u0131nd\u0131r\u0131c\u0131 i\u015fleme s\u00fcre\u00e7lerinde sertli\u011fi i\u00e7in kullan\u0131l\u0131r. Ayr\u0131ca, destek ve raf malzemesi \u00f6zellikleri, cam, seramik veya metal eritme i\u00e7in y\u00fcksek s\u0131cakl\u0131k f\u0131r\u0131nlar\u0131nda kullan\u0131\u015fl\u0131 olmas\u0131n\u0131 sa\u011flar; ayr\u0131ca kur\u015fun ge\u00e7irmez yeleklerin, otomobil frenlerinin ve debriyajlar\u0131n\u0131n, \u0131\u015f\u0131k yayan diyotlar gibi y\u00fcksek performansl\u0131 seramiklerin temel bir bile\u015feni olarak hizmet eder.<\/p>\n
Silisyum karb\u00fcr bilinen en sert malzemelerden biridir, elmas ve bor karb\u00fcr ile kar\u015f\u0131la\u015ft\u0131r\u0131labilir. Ayr\u0131ca, a\u015f\u0131nmaya ve \u0131s\u0131 stresine kar\u015f\u0131 direnci, tala\u015fl\u0131 imalat veya kumlama a\u015f\u0131nd\u0131r\u0131c\u0131lar\u0131 gibi y\u00fcksek s\u0131cakl\u0131k uygulamalar\u0131 i\u00e7in 1400degC'yi a\u015far. Ayr\u0131ca, silisyum karb\u00fcr bu i\u015fler i\u00e7in kullan\u0131lan asidik kimyasallardan kaynaklanan korozyona kar\u015f\u0131 diren\u00e7lidir - y\u00fcksek s\u0131cakl\u0131kta kullan\u0131m i\u00e7in m\u00fckemmeldir!<\/p>\n
Dayan\u0131kl\u0131l\u0131k, s\u00fcrt\u00fcnme testleri ile belirlenebilen bir \u00f6zellik olan a\u015f\u0131nma direnci kullan\u0131larak \u00f6l\u00e7\u00fclebilir. Test sonu\u00e7lar\u0131, t\u00fcm toprak t\u00fcrlerinde a\u015f\u0131nma direnci s\u00f6z konusu oldu\u011funda silisyum karb\u00fcr\u00fcn toprak i\u015flemeye y\u00f6nelik \u00f6zel \u00e7elikleri g\u00f6lgede b\u0131rakt\u0131\u011f\u0131n\u0131 ortaya koymaktad\u0131r; \u00f6zellikle niyobyum i\u00e7eri\u011fi art\u0131r\u0131lm\u0131\u015f F-61 dolgu kayna\u011f\u0131, benzer ko\u015fullarda XAR 600 \u00e7eli\u011finden neredeyse iki kat daha d\u00fc\u015f\u00fck a\u015f\u0131nma yo\u011funlu\u011fu seviyelerine sahiptir.<\/p>\n
SiC seramik, ola\u011fan\u00fcst\u00fc \u0131s\u0131 iletkenli\u011fi ve d\u00fc\u015f\u00fck genle\u015fme katsay\u0131s\u0131 ile ola\u011fan\u00fcst\u00fc mekanik \u00f6zellikler yaratan ola\u011fan\u00fcst\u00fc bir mikro yap\u0131ya sahiptir, bu da onu y\u00fcksek s\u0131cakl\u0131k uygulamalar\u0131 ve korozyon direnci gibi agresif ortamlar i\u00e7in uygun hale getirir. Ayr\u0131ca, a\u011f\u0131r darbelere dayanma kabiliyeti, onu m\u00fckemmel ta\u015f\u0131ma kabiliyetleri ile son derece dayan\u0131kl\u0131 k\u0131lar - bu nitelikler, bu serami\u011fi i\u015fleme ve kumlama gibi end\u00fcstriyel kullan\u0131mlar i\u00e7in cazip bir se\u00e7enek haline getirir, \u00e7\u00fcnk\u00fc kaba kumdan ince kum boyutlar\u0131na kadar bir dizi kum boyutunda gelir.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide powder is widely utilized for its hardness in abrasive machining processes such as grinding, honing, water-jet cutting and sandblasting. Additionally, bulletproof vests use silicon carbide to absorb projectile impacts. Carborundum grit is a widely used abrasive in modern lapidary applications. Additionally, it can be found as part of the carborundum collagraph printing technique. […]<\/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-98","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/98","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=98"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/98\/revisions"}],"predecessor-version":[{"id":99,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/98\/revisions\/99"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/media?parent=98"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/categories?post=98"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/tags?post=98"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}