Silisyum karb\u00fcr (karborundum) sert bir malzemedir - Mohs mineral sertli\u011fi \u00f6l\u00e7e\u011finde elmas\u0131n hemen alt\u0131nda - siyah veya koyu ye\u015fil kristal formunda bulunur.<\/p>\n
Demir d\u0131\u015f\u0131 metallerin ve seramiklerin ta\u015flanmas\u0131nda kullan\u0131lan son derece sert bir a\u015f\u0131nd\u0131r\u0131c\u0131 malzemedir. Z\u0131mparalama, kaya yuvarlama ve kumlama uygulamalar\u0131 i\u00e7in de uygundur.<\/p>\n
Karbon ve silikon atomlar\u0131ndan olu\u015fan indirgenemez derecede sert kovalent bir bile\u015fik olan silisyum karb\u00fcr (SiC), Mohs'un sertlik \u00f6l\u00e7e\u011fi s\u0131ralamas\u0131nda elmas ve k\u00fcbik bor nitr\u00fcrden sonra ikinci s\u0131rada yer almaktad\u0131r.<\/p>\n
A\u015f\u0131nd\u0131r\u0131c\u0131 \u00f6zellikleri nedeniyle elmas ta\u015flama ta\u015flar\u0131 demir d\u0131\u015f\u0131 metallerin, seramiklerin ve cam y\u00fczeylerin ta\u015flanmas\u0131 ve parlat\u0131lmas\u0131 i\u00e7in idealdir. Ayr\u0131ca, elmas parlat\u0131c\u0131lar havac\u0131l\u0131k ve otomotiv uygulamalar\u0131nda metal\u00fcrjik bile\u015fenlerin ta\u015flanmas\u0131 i\u00e7in yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n
Siyah SiC gevrektir, bu da kaya tamburlar\u0131 arac\u0131l\u0131\u011f\u0131yla defalarca geri d\u00f6n\u00fc\u015ft\u00fcr\u00fclebilmesini sa\u011flar. Zamanla bile\u015fenleri par\u00e7alan\u0131r ve mikro k\u0131r\u0131lmalara u\u011frayarak daha iyi ta\u015flama\/parlatma i\u015flemleri i\u00e7in yeni keskin kenarlar olu\u015fturur.<\/p>\n
SiC, a\u015f\u0131r\u0131 sertli\u011fi, benzersiz \u00f6zellikleri ve \u00e7eli\u011fi al\u00fcminyum oksit (Kahverengi Erimi\u015f Al\u00fcmina) veya B4C gibi di\u011fer do\u011fal a\u015f\u0131nd\u0131r\u0131c\u0131lardan daha h\u0131zl\u0131 ve verimli bir \u015fekilde \u00f6\u011f\u00fctme kabiliyeti ile sert malzemeler aras\u0131nda \u00f6ne \u00e7\u0131kmaktad\u0131r. Ayr\u0131ca SiC, B4C'den daha \u00fcst\u00fcn termal \u00f6zelliklere sahiptir ve bu da onu y\u00fcksek s\u0131cakl\u0131k uygulamalar\u0131nda kullan\u0131m i\u00e7in \u00fcst\u00fcn bir se\u00e7im haline getirir.<\/p>\n
Silisyum karb\u00fcr (SiC), sertli\u011fi ve kimyasal inertlik, y\u00fcksek termal iletkenlik, d\u00fc\u015f\u00fck genle\u015fme katsay\u0131s\u0131, s\u0131cakl\u0131k kararl\u0131l\u0131\u011f\u0131 ve korozyon ve a\u015f\u0131nmaya kar\u015f\u0131 diren\u00e7 gibi di\u011fer arzu edilen \u00f6zellikleri nedeniyle end\u00fcstrilerde yayg\u0131n olarak kullan\u0131lan sa\u011flam ve dayan\u0131kl\u0131 bir seramik malzemedir.<\/p>\n
SiC'nin m\u00fckemmel mekanik mukavemete, y\u00fcksek \u00e7ekme ve basma mukavemetlerine ve etkileyici bir Young mod\u00fcl\u00fc de\u011ferine sahip oldu\u011fu bilinmektedir. Ayr\u0131ca, asitlere ve lityumlara kar\u015f\u0131 dayan\u0131kl\u0131d\u0131r ve m\u00fckemmel termal \u015fok direnci \u00f6zelliklerine sahiptir.<\/p>\n
SiC, z\u0131mpara ka\u011f\u0131d\u0131 ve ta\u015flama ta\u015f\u0131 uygulamalar\u0131nda a\u015f\u0131nd\u0131r\u0131c\u0131 bir malzeme olarak birincil rol\u00fcn\u00fcn \u00f6tesinde, end\u00fcstriyel f\u0131r\u0131n astarlar\u0131, kesici aletler, pompalar ve roket motorlar\u0131 i\u00e7in a\u015f\u0131nmaya dayan\u0131kl\u0131 par\u00e7alar, \u0131\u015f\u0131k yayan diyotlar (LED'ler) i\u00e7in yar\u0131 iletken alt tabakalar da dahil olmak \u00fczere bir\u00e7ok uygulama i\u00e7in yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Ye\u015fil SiC, hassas ta\u015flama\/parlatma uygulamalar\u0131n\u0131n yan\u0131 s\u0131ra yar\u0131 iletken alt tabaka uygulamalar\u0131 i\u00e7in tipik olarak siyah SiC'den daha y\u00fcksek safl\u0131k seviyelerine sahiptir; Her iki \u00e7e\u015fit de sertlik\/\u0131s\u0131 iletkenli\u011fi\/k\u0131r\u0131lma toklu\u011fu performans\u0131 a\u00e7\u0131s\u0131ndan Al\u00fcmina\/Zirkonya gibi di\u011fer seramiklere ve sertlik\/\u0131s\u0131 iletkenli\u011fi\/k\u0131r\u0131lma toklu\u011fu a\u00e7\u0131s\u0131ndan Al\u00fcmina\/Zirkonya gibi di\u011fer seramiklere k\u0131yasla sertlik\/\u0131s\u0131 iletkenli\u011fi\/k\u0131r\u0131lma toklu\u011fu \u00f6zellikleri a\u00e7\u0131s\u0131ndan Al\u00fcmina\/Zirkonya gibi di\u011fer seramiklere k\u0131yasla yar\u0131 iletken alt tabaka uygulamalar\u0131na g\u00f6re benzersiz avantajlar sunar Al\u00fcmina\/Zirkonya gibi di\u011fer seramiklere g\u00f6re sertlik\/\u0131s\u0131 iletkenli\u011fi\/k\u0131r\u0131lma toklu\u011fu\/k\u0131r\u0131lma toklu\u011fu gibi \u00fcst\u00fcn performans \u00f6zelliklerinin, sertlik\/\u0131s\u0131 iletkenli\u011fi\/k\u0131r\u0131lma toklu\u011fu\/frak k\u0131r\u0131lma toklu\u011fu\/frak k\u0131r\u0131lma toklu\u011fu\/frak k\u0131r\u0131lma toklu\u011fu\/k\u0131r\u0131lma toklu\u011fu performans \u00f6zellikleri\/k\u0131r\u0131lma toklu\u011fu\/k\u0131r\u0131lma toklu\u011fu-ness performans \u00f6zellikleri alum \/Zirkonya\/zirkonya\/k\u0131r\u0131lma performans\u0131\/frak k\u0131r\u0131lma toklu\u011fu\/sertlik a\u00e7\u0131s\u0131ndan frconia\/sertlik a\u00e7\u0131s\u0131ndan frakalusive\/termal iletkenlik\/frak toklu\u011fu\/frak k\u0131r\u0131lma toklu\u011fu\/frak k\u0131r\u0131lma toklu\u011fu vs vs vs... ZIN(I\/zirkonya+k\u0131r\u0131lma s\u0131k\u0131l\u0131\u011f\u0131 vb.). vs==f =5=conia=5. Si=4. ZIN=1<\/p>\n
Silisyum karb\u00fcr (SiC) bug\u00fcn piyasadaki en hafif, en sert ve en g\u00fc\u00e7l\u00fc geli\u015fmi\u015f seramiklerden biridir. M\u00fckemmel termal iletkenli\u011fe sahip olmas\u0131n\u0131n yan\u0131 s\u0131ra asitlere ve alkalilere kar\u015f\u0131 olduk\u00e7a diren\u00e7lidir ve mukavemet veya performansta herhangi bir bozulma olmaks\u0131z\u0131n 1400 degC'ye kadar y\u00fcksek s\u0131cakl\u0131klara dayan\u0131r.<\/p>\n
Kevlar(r) malzemesi, inan\u0131lmaz sertli\u011fi nedeniyle kur\u015fun ge\u00e7irmez yelek \u00fcretiminde yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Ayr\u0131ca, bu dayan\u0131kl\u0131 kuma\u015f ola\u011fan\u00fcst\u00fc a\u015f\u0131nma ve erozyon direnci \u00f6zellikleri sunarak nozul, siklon ve sprey bile\u015fenlerinin \u00fcretimi i\u00e7in m\u00fckemmel bir malzeme se\u00e7imi haline gelir.<\/p>\n
SiC'nin kimyasal direnci, bor ve al\u00fcminyum katk\u0131s\u0131 gibi katk\u0131 maddeleri ile daha da g\u00fc\u00e7lendirilebilir; bor ile katk\u0131land\u0131\u011f\u0131nda p tipi bir yar\u0131 iletken haline gelir; al\u00fcminyum katk\u0131s\u0131 ise n tipi bir yar\u0131 iletken \u00fcretir.<\/p>\n
Silisyum karb\u00fcr\u00fcn mekanik \u00f6zellikleri, atomik olarak ince bir epitaksiyel grafen kaplama ile kapland\u0131\u011f\u0131nda b\u00fcy\u00fck \u00f6l\u00e7\u00fcde geli\u015ftirilebilir. Berkovich elmas girinti testleri, grafen ile kaplaman\u0131n 175 nanometreye kadar girinti derinliklerinde 30%'ye kadar daha y\u00fcksek sertlikle sonu\u00e7land\u0131\u011f\u0131n\u0131 ortaya koymu\u015ftur; bu fenomenin girinti s\u0131ras\u0131nda bir girinti taraf\u0131ndan uygulanan bas\u0131n\u00e7tan kaynaklanan diamin olu\u015fumuna atfedildi\u011fi d\u00fc\u015f\u00fcn\u00fclmektedir.<\/p>\n
Silisyum karb\u00fcr, \u00e7ok d\u00fc\u015f\u00fck termal genle\u015fme ve y\u00fcksek termal iletkenli\u011fe sahip ola\u011fan\u00fcst\u00fc sert ve dayan\u0131kl\u0131 bir malzeme olarak \u00f6ne \u00e7\u0131kmaktad\u0131r ve bu da onu y\u00fcksek s\u0131cakl\u0131k dalgalanmalar\u0131 i\u00e7eren uygulamalar i\u00e7in uygun hale getirmektedir.<\/p>\n
SiC'nin y\u00fcksek s\u0131cakl\u0131klara dayanabildi\u011fi ve kimyasal ve n\u00fckleer i\u015flemlerle bozulmaya kar\u015f\u0131 diren\u00e7li oldu\u011fu bilinirken, yararl\u0131 elektriksel \u00f6zellikler sunan bir elektrik yar\u0131 iletkeni oldu\u011fu da bilinmektedir.<\/p>\n
Edward G. Acheson ilk olarak 1891 y\u0131l\u0131nda sentetik elmas sentezleme giri\u015fiminin bir par\u00e7as\u0131 olarak toz haline getirilmi\u015f silikon ve karbon reaksiyonlar\u0131ndan sert ye\u015fil kristaller olu\u015fturmak i\u00e7in kendi s\u00fcrecini kullanarak karborundumu sentezledi ve yarat\u0131m\u0131na Latince ad\u0131 olan korundumdan sonra karborundum ad\u0131n\u0131 verdi - korundum gibi nadir de\u011ferli ta\u015flara verilen isim.<\/p>\n
Reaksiyona ba\u011fl\u0131 silisyum karb\u00fcr, SiC tozunun plastikle\u015ftirici ile kar\u0131\u015ft\u0131r\u0131lmas\u0131 ve ilave SiC \u00fcretmek i\u00e7in gaz veya s\u0131v\u0131 silikon ile tekrar reaksiyona sokulmadan \u00f6nce \u015fekillendirilmesiyle yap\u0131l\u0131r. \u00d6te yandan, do\u011frudan sinterlenmi\u015f silisyum karb\u00fcr, daha d\u00fc\u015f\u00fck \u00fcretim maliyetleri ile daha ince tanelere sahipken, 300 \u00b0 C ve \u00fczeri \u00fcst\u00fcn oda s\u0131cakl\u0131\u011f\u0131 mekanik mukavemetine sahiptir.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide (carborundum) is a hard material – just below diamond on the Mohs scale of mineral hardness – found in black or dark green crystal form. An extremely hard abrasive material used for grinding nonferrous metals and ceramics. Also suitable for sanding, rock tumbling and sandblasting applications. Abrasive Properties Silicon carbide (SiC), an irreducibly […]<\/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-144","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/144","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=144"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/144\/revisions"}],"predecessor-version":[{"id":145,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/posts\/144\/revisions\/145"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/media?parent=144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/categories?post=144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/tr\/wp-json\/wp\/v2\/tags?post=144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}