Silisyum karb\u00fcr, silisyum ve karbon aras\u0131nda y\u00fcksek s\u0131cakl\u0131kta ger\u00e7ekle\u015fen kimyasal reaksiyon sonucu olu\u015fan g\u00fc\u00e7l\u00fc bir bile\u015fiktir ve son derece dayan\u0131kl\u0131 kristal yap\u0131s\u0131 sayesinde zorlu ortamlarda kullan\u0131ma uygundur.<\/p>\n
Silisyum karb\u00fcr, zorlu \u00e7al\u0131\u015fma ortamlar\u0131nda uzun \u00f6m\u00fcrl\u00fc olmas\u0131n\u0131 sa\u011flamak i\u00e7in \u00fcretim s\u00fcrecinde s\u0131k\u0131 kalite kontrolleri gerektirir. Uzun \u00f6m\u00fcrl\u00fcl\u00fc\u011f\u00fcn\u00fc hangi fakt\u00f6rlerin etkiledi\u011fini ke\u015ffedece\u011fiz.<\/p>\n
SiC, katmanlar\u0131n\u0131 veya \u00e7oklu tiplerini olu\u015fturmak i\u00e7in tetrahedral olarak d\u00fczenlenmi\u015f karbon atomlar\u0131na sahip silisyum karb\u00fcr kristal yap\u0131s\u0131n\u0131n farkl\u0131 formlar\u0131ndan veya \u00e7oklu tiplerinden olu\u015fan son derece sert, yo\u011fun bir malzemedir ve benzersiz korozyona dayan\u0131kl\u0131 niteliklerini olu\u015fturan katmanlar veya \u00e7oklu tipler olarak d\u00fczenlenmi\u015f karbon atomlar\u0131 aras\u0131nda tetrahedral ba\u011flar i\u00e7eren yap\u0131lar \u00fcretir. Bas\u0131n\u00e7s\u0131z sinterlenmi\u015f silisyum karb\u00fcr (C\/C-SiC) t\u00fcm asitlere (hidroklorik ve s\u00fclf\u00fcrik), baz \u00e7\u00f6z\u00fcc\u00fclere ve nitrik asit gibi oksitleyici ortamlara diren\u00e7 g\u00f6sterirken, C\/C-SiC'den yap\u0131lm\u0131\u015f kat\u0131 potalar\u0131n f\u0131r\u0131n astar\u0131 uygulamalar\u0131 olarak s\u0131kl\u0131kla kullan\u0131lmas\u0131n\u0131 sa\u011flayacak kadar korozyona dayan\u0131kl\u0131d\u0131r.<\/p>\n
SiC malzemelerin korozyonu, birden fazla fakt\u00f6re ba\u011fl\u0131 olarak son derece karma\u015f\u0131k olabilir. Malzemelerin korozyon direnci, kal\u0131nl\u0131klar\u0131na ve oksidasyon s\u00fcre\u00e7leri s\u0131ras\u0131nda geli\u015fen oksit tabakas\u0131n\u0131n derinli\u011fine ba\u011fl\u0131d\u0131r; ayr\u0131ca, \u00fcnl\u00fc parabolik oksidasyon h\u0131z\u0131n\u0131n \u00fcretilmesinden sorumlu kimyasal ve fiziksel mekanizmalar tam olarak anla\u015f\u0131lamam\u0131\u015ft\u0131r.<\/p>\n
Korozif ortamlar\u0131n malzeme mukavemeti \u00fczerindeki etkisini de\u011ferlendirmek i\u00e7in uzun s\u00fcreli korozyon testleri gereklidir. Uzun s\u00fcreli korozyon, zaman i\u00e7inde malzemelerin mukavemetini ve dayan\u0131kl\u0131l\u0131\u011f\u0131n\u0131 azaltan y\u00fczey kusurlar\u0131n\u0131 art\u0131rabilir.<\/p>\n
Elkem, molibden veya titanyum ara katmanl\u0131 metal dif\u00fczyon yap\u0131\u015ft\u0131rma, reaksiyon sinterleme ve SiC nanopowder sinterleme kullan\u0131larak birle\u015ftirilen d\u00f6rt tip SiC - SiC plaka ba\u011flant\u0131s\u0131n\u0131n kapsaml\u0131 korozyon hassasiyeti analizlerini ger\u00e7ekle\u015ftirdi. T\u00fcm numuneler, y\u00fcksek s\u0131cakl\u0131kta be\u015f haftal\u0131k hidrotermal testler s\u0131ras\u0131nda radyasyon kontaminasyonu olmadan y\u00fcksek s\u0131cakl\u0131kta be\u015f haftal\u0131k hidrotermal testlere dayanm\u0131\u015ft\u0131r.<\/p>\n
Silisyum Karb\u00fcr (SiC) son derece sert sentetik bir malzemedir ve Mohs \u00f6l\u00e7e\u011finde Al\u00fcmina (ortalama 9) ile Elmas (ortalama 10) aras\u0131nda bir yerde bulunur. SiC, mekanik uygulamalarda a\u015f\u0131nd\u0131r\u0131c\u0131 ve a\u015f\u0131nmaya dayan\u0131kl\u0131 par\u00e7alar olarak; end\u00fcstriyel f\u0131r\u0131nlar\u0131n ve seramiklerin refrakter astarlar\u0131nda; u\u00e7ak yak\u0131t tank\u0131 astarlar\u0131nda refrakter kaplamalar olarak; end\u00fcstri taraf\u0131ndan kullan\u0131lan f\u0131r\u0131nlarda refrakter astarlar olarak ve y\u00fcksek s\u0131cakl\u0131klarda \u00e7al\u0131\u015fan yar\u0131 iletken elektronik cihazlarda kullan\u0131m alan\u0131 bulur.<\/p>\n
Silisyum karb\u00fcr, h\u0131zl\u0131 s\u0131cakl\u0131k dalgalanmalar\u0131 s\u0131ras\u0131nda \u015feklini ve boyutunu korumas\u0131n\u0131 ve a\u015f\u0131r\u0131 ortamlarda \u00e7al\u0131\u015fan \u00fcr\u00fcnleri daha g\u00fcvenilir hale getirmesini sa\u011flayan d\u00fc\u015f\u00fck termal genle\u015fme katsay\u0131s\u0131na sahip ola\u011fan\u00fcst\u00fc bir termomekanik seramik malzemedir.<\/p>\n
Silisyum karb\u00fcr ola\u011fan\u00fcst\u00fc mekanik \u00f6zelliklere sahiptir ve geni\u015f bir \u00e7al\u0131\u015fma s\u0131cakl\u0131\u011f\u0131 aral\u0131\u011f\u0131 ile m\u00fckemmel termal iletkenli\u011fe sahiptir, ayr\u0131ca korozyona ve kimyasal sald\u0131r\u0131lara kar\u015f\u0131 olduk\u00e7a diren\u00e7lidir, bu da onu otomotiv, havac\u0131l\u0131k ve elektronik gibi end\u00fcstrilerdeki zorlu ortam uygulamalar\u0131 i\u00e7in uygun hale getirir.<\/p>\n
Bu kitap, hem y\u0131\u011f\u0131n hem de ince film silisyum karb\u00fcr (SiC) tabanl\u0131 mikrosistem teknolojisini sunmakta ve elektronik cihaz \u00fcretimini mekanik MEMS cihazlar\u0131yla birle\u015ftirerek zorlu ortam mikrosistemleri i\u00e7in temel bir platform olarak \u00f6ne \u00e7\u0131kmas\u0131n\u0131 ele almaktad\u0131r. Bu kitap ayn\u0131 zamanda \u00e7e\u015fitli s\u00fcre\u00e7leri ve malzemeleri kullan\u0131labilir sens\u00f6r mod\u00fcllerinde birle\u015ftirmenin do\u011fas\u0131nda var olan zorluklar\u0131 da incelemektedir; \u00f6zellikle bile\u015fenler aras\u0131ndaki s\u0131cakl\u0131k uyumsuzlu\u011fu ve SiC'nin \u00e7evresel hassasiyetleri kapsaml\u0131 bir \u015fekilde ara\u015ft\u0131r\u0131l\u0131rken, hem y\u0131\u011f\u0131n malzeme SiC teknolojisindeki hem de SiC ince film teknolojilerindeki son durum kapsaml\u0131 bir \u015fekilde ele al\u0131nmaktad\u0131r.<\/p>\n
Tungsten Karb\u00fcr (WC), a\u015f\u0131r\u0131 sertlik, y\u00fcksek iletkenlik, d\u00fc\u015f\u00fck \u0131s\u0131l genle\u015fme ve korozyona kar\u015f\u0131 diren\u00e7 \u00f6zellikleriyle bir\u00e7ok uygulamada kullan\u0131lan \u00f6nemli ve \u00e7ok y\u00f6nl\u00fc bir ala\u015f\u0131md\u0131r. Tungsten karb\u00fcr, saf tungsten tozunun karbon, nikel veya kobalt gibi di\u011fer metallerle sinterleme ad\u0131 verilen bir i\u015flem kullan\u0131larak kar\u0131\u015ft\u0131r\u0131lmas\u0131yla olu\u015fturulur; bir kez presleme ve d\u00f6vme yoluyla belirli kullan\u0131mlar i\u00e7in \u015fekillere d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fcnde, en yayg\u0131n olarak kesici tak\u0131mlar. Tungsten'in a\u015f\u0131r\u0131 dayan\u0131kl\u0131l\u0131\u011f\u0131, kesici aletler i\u00e7in kullan\u0131lan di\u011fer metallerden \u00e7ok daha \u00f6teye uzan\u0131r; ayr\u0131ca, z\u0131rh korumas\u0131n\u0131 delmek ve d\u00fc\u015fman savunmas\u0131n\u0131 a\u015fmak i\u00e7in mermilerin do\u011frudan d\u00fc\u015fmanlara kar\u015f\u0131 ate\u015flendi\u011fi kinetik bombard\u0131man ad\u0131 verilen bir sald\u0131r\u0131 takti\u011fi kullanan askeri birimler taraf\u0131ndan s\u0131kl\u0131kla kullan\u0131l\u0131r.<\/p>\n
Tungsten karb\u00fcr (WC), \u00e7ok y\u00fcksek h\u0131zlara ve bas\u0131n\u00e7lara dayanma kabiliyeti, en y\u00fcksek Young mod\u00fcl\u00fcne, en sert y\u00fczeye, en d\u00fc\u015f\u00fck termal genle\u015fme oran\u0131na ve t\u00fcm metaller aras\u0131nda en iyi a\u015f\u0131nma direncine sahip olmas\u0131 nedeniyle hassas m\u00fchendislik i\u00e7in yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Ayr\u0131ca, WC'nin \u00e7ok s\u00fcnek olmas\u0131, \u00e7ubuklar halinde \u015fekillendirilmesine veya akkor ampullerde oldu\u011fu gibi tel olarak ekstr\u00fcde edilmesine olanak tan\u0131r.<\/p>\n
Tungsten karb\u00fcr\u00fcn k\u0131r\u0131lganl\u0131\u011f\u0131 ve a\u011f\u0131r darbeler alt\u0131nda \u00e7atlamaya veya k\u0131r\u0131lmaya yatk\u0131nl\u0131\u011f\u0131, onu alt\u0131n ve platin gibi de\u011ferli metallere g\u00f6re darbelere daha yatk\u0131n hale getirmektedir. Yine de, mermi darbelerini emmek i\u00e7in tungsten karb\u00fcrden yap\u0131lm\u0131\u015f tampon diskler kullanan NCSU krater test tesisinde oldu\u011fu gibi, \u015fok direncinin hayati \u00f6nem ta\u015f\u0131d\u0131\u011f\u0131 askeri uygulamalarda pop\u00fcler olarak kullan\u0131lmaya devam etmektedir.<\/p>\n
Silisyum karb\u00fcr\u00fcn seramik ve yar\u0131 iletken \u00f6zelliklerinin benzersiz kombinasyonu, onu end\u00fcstriyel ve elektronik kullan\u0131mlar i\u00e7in uygun, son derece uyarlanabilir bir malzeme haline getirmektedir. Bu \u00f6zelliklerinden dolay\u0131 silisyum karb\u00fcr elektronikler, genellikle di\u011fer elektroniklerin d\u00fczg\u00fcn \u00e7al\u0131\u015fmas\u0131n\u0131 engelleyecek y\u00fcksek s\u0131cakl\u0131k ve voltaj seviyelerine sahip zorlu ortamlarda bile \u00e7al\u0131\u015fabilir.<\/p>\n
Kimyasal olarak konu\u015fursak, silisyum karb\u00fcr inan\u0131lmaz derecede kararl\u0131 bir malzemedir. Konsantre s\u00fclf\u00fcrik asit hari\u00e7 \u00e7o\u011fu aside (hidroklorik, s\u00fclf\u00fcrik ve hidroflorik), tuzlara ve alkalilere kar\u015f\u0131 dayan\u0131kl\u0131d\u0131r; ayr\u0131ca suyla reaksiyona girmez; bu da onu uzun s\u00fcre s\u0131v\u0131ya maruz kalmas\u0131 gereken bile\u015fenler i\u00e7in ideal bir malzeme se\u00e7imi haline getirir.<\/p>\n
Silisyum karb\u00fcr, atomik yap\u0131s\u0131 nedeniyle m\u00fckemmel elektriksel \u00f6zellikler sunar. Kovalent olarak ba\u011flanm\u0131\u015f karbon ve silisyum katmanlar\u0131 i\u00e7eren yak\u0131n paketlenmi\u015f yap\u0131lar halinde kristalle\u015fir. Bu katmanlar \u00e7oklu tip olarak adland\u0131r\u0131lan farkl\u0131 konfig\u00fcrasyonlarda d\u00fczenlenebilir; her bir \u00e7oklu tip kendi istifleme dizisi ile ay\u0131rt edilir ve her biri benzersiz \u00f6zelliklere sahip \u00e7e\u015fitli kristal yap\u0131lara yol a\u00e7ar.<\/p>\n
Silisyum karb\u00fcr\u00fcn \u00e7oklu \u00f6zellikleri onu teknolojik yeniliklerin \u00f6n saflar\u0131na yerle\u015ftirmektedir. Pompa yataklar\u0131, valfler, kumlama enjekt\u00f6rleri ve ekstr\u00fczyon kal\u0131plar\u0131 gibi ekstrem ve y\u00fcksek performansl\u0131 m\u00fchendislik uygulamalar\u0131n\u0131n yan\u0131 s\u0131ra ekstrem ortamlarda \u00e7al\u0131\u015fan yar\u0131 iletken cihazlar\u0131n imalat\u0131nda kullan\u0131lmas\u0131, sekt\u00f6rler aras\u0131nda \u00f6nemli geli\u015fmelere yol a\u00e7abilir.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide is a strong compound formed through the high-temperature chemical reaction between silicon and carbon, with an extremely durable […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","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":[3],"tags":[],"class_list":["post-21","post","type-post","status-publish","format-standard","hentry","category-sic-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/posts\/21","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/comments?post=21"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/posts\/21\/revisions"}],"predecessor-version":[{"id":22,"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/posts\/21\/revisions\/22"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/media?parent=21"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/categories?post=21"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/tr\/wp-json\/wp\/v2\/tags?post=21"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}