Silicio karbidas (SiC) yra neorganinis cheminis junginys, sudarytas i\u0161 silicio dioksido ir anglies, pirm\u0105 kart\u0105 masi\u0161kai komerci\u0161kai prad\u0117tas gaminti 1893 m. ir naudojamas kaip abrazyvin\u0117 med\u017eiaga. Nors SiC nat\u016braliai egzistuoja kaip mineralas moisanitas, masin\u0117 jo gamyba prad\u0117ta po \u0161ios datos, kai jis buvo prad\u0117tas naudoti milteli\u0173 ir kristal\u0173 pavidalu masiniam vartojimui abrazyvini\u0173 med\u017eiag\u0173 gaminiuose.<\/p>\n
Keramin\u0117 med\u017eiaga \"Cerakote\" yra viena i\u0161 kie\u010diausi\u0173 ir lengviausi\u0173 keramini\u0173 med\u017eiag\u0173, pasi\u017eyminti ypatingu atsparumu korozijai, dilimui ir erozijai, taip pat atsparumu ekstremalioms temperat\u016broms.<\/p>\n
Silicio karbidas (SiC) yra itin kieta ir elastinga med\u017eiaga, pasi\u017eyminti dideliu atsparumu korozijai ir \u0161iluminio pl\u0117timosi savyb\u0117mis, atspari r\u016bg\u0161tims ir \u0161armams ir kartu yra elektros izoliatorius.<\/p>\n
\u017dem\u0117je SiC gausu kaip mineralo moisanito, o kosmose - kaip \u017evaig\u017ed\u017ei\u0173 dulki\u0173 i\u0161 daug anglies turin\u010di\u0173 \u017evaig\u017ed\u017ei\u0173. SiC pla\u010diai naudojamas \u012fvairiose pramon\u0117s \u0161akose, \u012fskaitant chemijos pramon\u0119, popieriaus gamyb\u0105 ir siurbli\u0173 bei pavar\u0173 sistem\u0173 komponentus. Be to, dinaminio sandarinimo technologijose, kuriose naudojami trinties guoliai arba mechaniniai sandarikliai, d\u0117l didesnio patikimumo sud\u0117tingomis s\u0105lygomis jam da\u017enai teikiama pirmenyb\u0117 prie\u0161 metalinius analogus.<\/p>\n
Da\u017eniausiai naudojamas alfa silicio karbidas (a-SiC), kurio \u0161e\u0161iakamp\u0117 kristalin\u0117 strukt\u016bra pana\u0161i \u012f Wurtzite. Nors yra beta a-SiC su cinko blende kristaline strukt\u016bra, jo komercinis pritaikymas teb\u0117ra ribotas.<\/p>\n
Silicio karbido, kaip med\u017eiagos, universalum\u0105 vis\u0173 pirma lemia jo i\u0161skirtin\u0117s \u0161ilumin\u0117s savyb\u0117s, \u012fskaitant didel\u012f \u0161ilumin\u012f laidum\u0105, ma\u017e\u0105 \u0161ilumin\u012f pl\u0117tim\u0105si ir auk\u0161t\u0105 lydymosi temperat\u016br\u0105, d\u0117l kuri\u0173 jis tinka naudoti aviacijos, energetikos technologij\u0173 ir chemijos gamybos srityse.<\/p>\n
\u0160i med\u017eiaga pasi\u017eymi puikiu atsparumu korozijai, \u012fskaitant atsparum\u0105 r\u016bg\u0161tin\u0117ms ir \u0161armin\u0117ms chemin\u0117ms med\u017eiagoms, taip pat temperat\u016brai iki 1600 laipsni\u0173 Celsijaus. Tod\u0117l ji idealiai tinka guoliams, antgaliams, vidaus degimo varikli\u0173 komponentams ir elektrini\u0173 transporto priemoni\u0173 dalims, kurios turi atlaikyti stipr\u0173 \u0161ilumin\u012f sm\u016bg\u012f, nesutr\u016bkin\u0117ti ir nesuirti.<\/p>\n
\"American Elements\" si\u016blo plat\u0173 standartini\u0173 ir nestandartini\u0173 med\u017eiag\u0173 pasirinkim\u0105 puslaidininki\u0173, aviacijos, automobili\u0173, gynybos elektronikos, elektronikos, ap\u0161vietimo, popieriaus ir plieno pramonei. Tyrim\u0173 ir kokyb\u0117s kontrol\u0117s tikslais galima imti pavyzd\u017eius, taip pat si\u016blomas makro- ir mikrogr\u016bd\u0173 dyd\u017eio nustatymas. \"American Elements\" a-SiC yra chemi\u0161kai grynas, pasi\u017eymi dideliu biriu tankiu, o m\u016bs\u0173 cheminio valymo procese jis sijojamas, kad atitikt\u0173 konkre\u010dius FEPA dyd\u017eius, taip pat ACS reagent\u0173 klas\u0117s standartus.<\/p>\n
Silicio karbidas pasi\u017eymi puikiu apdirbamumu ir elektriniu laidumu, nepaisant palyginti ma\u017eo tankio (3,2 g\/cm3), taip pat atsparumu daugumai r\u016bg\u0161\u010di\u0173, drusk\u0173 ir \u0161arm\u0173.<\/p>\n
GaN, kaip pla\u010dios skiriamosios juostos puslaidininkis, pasi\u017eymi dideliu \u0161iluminiu laidumu ir elektrinio lauko pramu\u0161imo stiprumu, taip pat yra puikus izoliatorius.<\/p>\n
D\u0117l atom\u0173 i\u0161sid\u0117stymo kristalin\u0117se gardel\u0117se SiC daugialypiai tipai labai skiriasi savo pagrindin\u0117mis elektrin\u0117mis savyb\u0117mis ir kiekvienas j\u0173 turi tam tikr\u0173 privalum\u0173 ir tr\u016bkum\u0173, palyginti su siliciu, trijose pagrindin\u0117se kategorijose - \u0161iluminio laidumo, elektrinio lauko pramu\u0161imo stiprio ir energijos juostos sand\u016bros.<\/p>\n
SiC b\u016bna keli\u0173 form\u0173. Alfa formoms b\u016bdinga \u0161e\u0161iakamp\u0117 kristalin\u0117 strukt\u016bra, pana\u0161i \u012f Wurtzite, o beta formoms b\u016bdinga cinko blende kristalin\u0117 strukt\u016bra ir jos taip pat gali b\u016bti naudojamos kaip katalizatori\u0173 atramos. Kibirk\u0161tinio plazminio sukepinimo b\u016bdu buvo sukurtas nestechiometrinis SiC, \u012f kur\u012f C ir Si prid\u0117ta nuo 1 iki 5 mol%, pasi\u017eymintis nuoseklia mikrostrukt\u016bra ir ma\u017ea elektrine var\u017ea; did\u0117jant C kiekiui, Sebeko koeficientas keit\u0117si nuo n tipo iki p tipo, o tai rodo, kad tarp C ir Si susiformavo kietieji tirpalai, sudarantys jo gardel\u0117s strukt\u016br\u0105.<\/p>\n
Silicio karbidas pasi\u017eymi didesniu kietumu, plasti\u0161kumu ir atsparumu korozijai bei cheminiam poveikiui, palyginti su dauguma in\u017einerin\u0117s keramikos r\u016b\u0161i\u0173. Tai viena i\u0161 kie\u010diausi\u0173 in\u017einerini\u0173 keramik\u0173, tod\u0117l ji gali atlaikyti auk\u0161t\u0105 temperat\u016br\u0105 ir mechanin\u0119 apkrov\u0105, taip pat d\u0117l didel\u0117s Youngo modulio vert\u0117s u\u017etikrinti ger\u0105 matmen\u0173 stabilum\u0105.<\/p>\n
Aliuminis yra viena stabiliausi\u0173 med\u017eiag\u0173, atspari\u0173 sm\u016bgiams ir vibracijai, tod\u0117l jis yra tinkama med\u017eiaga didelio na\u0161umo darbams, pvz., abrazyvams ir kitiems auk\u0161t\u0173j\u0173 technologij\u0173 darbams. Be to, d\u0117l savo \u0161ilumos laidumo, ma\u017eo pl\u0117timosi koeficiento ir atsparumo r\u016bg\u0161tims bei \u0161armams jis yra puikus pasirinkimas.<\/p>\n
\"American Elements\" si\u016blo didelio grynumo silicio karbido milteli\u0173 produktus, pagamintus pagal grie\u017etus pramon\u0117s ir konkre\u010dios paskirties standartus, skirtus naudoti \u012fvairiose pramon\u0117s \u0161akose ir \u012fvairiose srityse, pavyzd\u017eiui, \"Mil Spec\" (karin\u0117 klas\u0117), \"ACS Reagent Grade Technical Grade\" (technin\u0117 klas\u0117), \"Food Pharmaceutical Grade\" (maistas, farmacija) ir \"USP\/BP\" pakavimo sprendimai taip pat yra prieinami - pra\u0161ome susisiekti su m\u016bs\u0173 komanda, kad gautum\u0117te daugiau informacijos; visos klas\u0117s atitinka taikomus ASTM bandym\u0173 standartus, o prireikus galima \u012fsigyti nestandartin\u0119 pakuot\u0119 - tipin\u0119 ir nestandartin\u0119 pakuot\u0119 galima \u012fsigyti pagal u\u017esakym\u0105 - pra\u0161ome susisiekti dabar, nes \"American Elements\" stengiasi pasi\u016blyti klientams kokybi\u0161kus produktus, kartu teikdama neprilygstam\u0105 klient\u0173 aptarnavim\u0105!<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide (SiC) is an inorganic chemical compound made of silica and carbon that was first mass produced commercially since […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","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-76","post","type-post","status-publish","format-standard","hentry","category-sic-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts\/76","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/comments?post=76"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts\/76\/revisions"}],"predecessor-version":[{"id":77,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts\/76\/revisions\/77"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/media?parent=76"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/categories?post=76"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/tags?post=76"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}