K\u00edsilkarb\u00ed\u00f0sl\u00edpiefni (SiC) eru f\u00e1anleg \u00ed m\u00f6rgum kornast\u00e6r\u00f0um og eru oft notu\u00f0 b\u00e6\u00f0i \u00ed bundnum og h\u00fa\u00f0u\u00f0um sl\u00edpisk\u00edfum. \u00de\u00f3 a\u00f0 SiC finnist n\u00e1tt\u00farulega \u00ed moissan\u00edtsteinum, \u00fe\u00e1 byggir meirihluti framlei\u00f0slu SiC anna\u00f0hvort \u00e1 Acheson-ferlinu e\u00f0a t\u00e6kni efnauf\u00feenslu me\u00f0 gufu (CVD).<\/p>\n
Hita\u00feol, mikil varmalei\u00f0ni og t\u00e6ringar\u00feol gera \u00fea\u00f0 a\u00f0 fullkomnu efni fyrir ofnkl\u00e6\u00f0ningar, smeltaukar og a\u00f0ra \u00fe\u00e6tti \u00ed st\u00e1lsm\u00ed\u00f0i.<\/p>\n
K\u00edsilkarb\u00ed\u00f0 er v\u00ed\u00f0a \u00feekkt fyrir fram\u00farskarandi h\u00f6rku (\u00ed \u00f6\u00f0ru s\u00e6ti \u00e1 eftir demanti og kub\u00edska b\u00f3rn\u00edtr\u00ed\u00f0i), mikinn styrk, efnafr\u00e6\u00f0ilega st\u00f6\u00f0ugleika og hita\u00feol \u2013 eiginleika sem gera \u00fea\u00f0 a\u00f0 efninu sem helst er nota\u00f0 \u00ed framlei\u00f0slu keramik- og hita\u00feolsv\u00f6ru. Enn fremur er k\u00edsilkarb\u00ed\u00f0 v\u00ed\u00f0a nota\u00f0 \u00ed h\u00e1frammist\u00f6\u00f0u rafeindat\u00e6kjum \u2013 s\u00e9rstaklega \u00ed aflgjafaskiptum, m\u00e1lm\u00f3x\u00ed\u00f0-skiptum (MOSFET) og einangru\u00f0um hli\u00f0abip\u00f3lart\u00edstor (IGBT).<\/p>\n
Framlei\u00f0endur framlei\u00f0a k\u00edsilkarb\u00ed\u00f0 me\u00f0 \u00fev\u00ed a\u00f0 hita bl\u00f6ndu af k\u00edsilgleri og k\u00f3ki vi\u00f0 afar h\u00e1an hita \u00fear til efnahvarf \u00feeirra, sem kallast SiC-samsetning, myndar kristalla\u00f0a formger\u00f0ir sem kallast gr\u00e6nt e\u00f0a svart SiC eftir hreinleika \u00feeirra. \u00deegar SiC er framleitt er h\u00e6gt a\u00f0 f\u00ednstilla \u00fea\u00f0 frekar \u00ed agnast\u00e6r\u00f0ir sem henta s\u00e9rst\u00f6kum notkunarsvi\u00f0um me\u00f0 \u00fdmsum samrunaa\u00f0fer\u00f0um, svo sem Acheson-ferli, kolefnis-hitavi\u00f0sn\u00faningi og hitabroti flj\u00f3tandi p\u00f3l\u00fdmers \u2013 hver \u00feessara a\u00f0fer\u00f0a krefst orkufreks hitaferlis sem \u00fearf a\u00f0 n\u00e1 vi\u00f0brag\u00f0shita til a\u00f0 mynda kristalla\u00f0a SiC-kristalla \u00e1\u00f0ur en s\u00fdru\u00fevottur og \u00feurrkun eru nau\u00f0synleg til a\u00f0 framlei\u00f0slan geti loki\u00f0 og teki\u00f0 \u00e1 sig endanlegt form sitt.<\/p>\n
Framlei\u00f0sla k\u00edsilkarb\u00ed\u00f0s hefst me\u00f0 \u00fev\u00ed a\u00f0 blanda k\u00f3ksmj\u00f6li og kvarz saman, og s\u00ed\u00f0an er rafmagn leitt \u00ed gegnum graf\u00edtkjarna til a\u00f0 hita bl\u00f6nduna \u00fear til hreinn k\u00edsilkarb\u00ed\u00f0ur (SiC) myndast \u2013 \u00feetta ferli er kalla\u00f0 Acheson-ferli\u00f0.<\/p>\n
\u00deegar hr\u00e1efni hafa veri\u00f0 undirb\u00fain m\u00e1 nota \u00fdmsar a\u00f0fer\u00f0ir til a\u00f0 breyta duftinu \u00ed saggara. Eftir a\u00f0 saggarnir hafa veri\u00f0 m\u00f3ta\u00f0ir gangast \u00feeir undir eftirvinnsluferli, svo sem v\u00e9lr\u00e6na vinnslu og yfirbor\u00f0sme\u00f0fer\u00f0, sem tryggja endingu \u00feeirra og vi\u00f0n\u00e1m gegn efnafr\u00e6\u00f0ilegri t\u00e6ringu vi\u00f0 h\u00e6rri hitastig.<\/p>\n
Svart k\u00edsilkarb\u00ed\u00f0duft er s\u00edfellt vins\u00e6lli efni til framlei\u00f0slu \u00e1 sl\u00edpiv\u00f6rum, svo sem sl\u00edpihj\u00f3lum og skur\u00f0arverkf\u00e6rum, \u00fe\u00f6kk s\u00e9 fram\u00farskarandi h\u00f6rku og betri varmalei\u00f0ni. Enn fremur m\u00e1 finna \u00feetta efni \u00ed framlei\u00f0sluferlum rafeindai\u00f0na\u00f0arins, til d\u00e6mis vi\u00f0 framlei\u00f0slu h\u00e1lflei\u00f0ara og d\u00ed\u00f3\u00f0a, auk \u00feess sem \u00fea\u00f0 \u00feolir h\u00e1an hita, sem gerir \u00fea\u00f0 hentugt til a\u00f0 framlei\u00f0a hita\u00feolin efni sem notu\u00f0 eru \u00ed ofnum, k\u00edlnum og kr\u00fasum \u00ed byggingari\u00f0na\u00f0i og m\u00e1lmvinnslu.<\/p>\n
K\u00edsilkarb\u00ed\u00f0duft b\u00fd\u00f0ur upp \u00e1 fram\u00farskarandi v\u00e9lr\u00e6na eiginleika sem gera \u00fea\u00f0 hentugt fyrir h\u00e1hitaforrit. Har\u00f0leiki \u00feess og slit\u00feol gera \u00fea\u00f0 mj\u00f6g slit\u00feoli\u00f0, en varmast\u00f6\u00f0ugleiki, efna\u00feol og raflei\u00f0ni gera \u00fea\u00f0 einnig mj\u00f6g eftirs\u00f3tt.<\/p>\n
Til a\u00f0 framlei\u00f0a \u00feetta efni er blanda af k\u00edsli og k\u00f3ki hitu\u00f0 vi\u00f0 mj\u00f6g h\u00e1an hita \u00ed s\u00e9rst\u00f6kum ofni, sem veldur \u00fev\u00ed a\u00f0 \u00feau mynda st\u00f3ra kristalla af k\u00edsilkarb\u00ed\u00f0i.<\/p>\n
\u00deegar k\u00edsilkarb\u00ed\u00f0 hefur myndast \u00fearf a\u00f0 \u00fevo \u00fea\u00f0 til a\u00f0 fjarl\u00e6gja \u00f3hreinindi \u00e1\u00f0ur en \u00fea\u00f0 er \u00feurrka\u00f0 me\u00f0 \u00fdmsum a\u00f0fer\u00f0um, svo sem heitur loft\u00feurrkun, t\u00f3mar\u00fam\u00feurrkun e\u00f0a \u00f6rbylgju\u00feurrkun.<\/p>\n
Eftir \u00feurrkun er k\u00edsilkarb\u00ed\u00f0 brj\u00f3ti\u00f0, flokka\u00f0, aftur m\u00f6lva\u00f0 og unni\u00f0 fyrir s\u00e9rt\u00e6ka notkun. Lokani\u00f0ursta\u00f0an er kjarni sem h\u00e6gt er a\u00f0 m\u00f3ta eftir s\u00e9rst\u00f6kum kr\u00f6fum \u2013 framlei\u00f0endur nota \u00feennan kjarna til a\u00f0 b\u00faa til logag\u00f3lf, til d\u00e6mis \u2013 \u00f3missandi \u00fe\u00e1ttur til a\u00f0 tryggja sem bestu \u00fa\u00f0un eldsneytis.<\/p>\n
K\u00edsilkarb\u00ed\u00f0duft sker sig \u00far \u00ed krefjandi framlei\u00f0sluumhverfi me\u00f0 \u00e1berandi eiginleikum s\u00ednum, svo sem \u00f3tr\u00falegri h\u00f6rku, fram\u00farskarandi varmalei\u00f0ni og t\u00e6ringar\u00feoli. \u00deess vegna hefur \u00feetta efni lengi veri\u00f0 nota\u00f0 \u00ed sl\u00edpiefnum og rafeindai\u00f0na\u00f0i, \u00fear \u00e1 me\u00f0al vi\u00f0 skur\u00f0 og p\u00fassun m\u00e1lma e\u00f0a keramikfl\u00edsa.<\/p>\n
Vegna \u00f3venjulegs \u00feols og skerpu er demantur gjarnan nota\u00f0ur \u00ed sl\u00edpiefnai\u00f0na\u00f0i til framlei\u00f0slu sl\u00edpihj\u00f3la og skur\u00f0arplata. Rafeindafyrirt\u00e6ki treysta einnig miki\u00f0 \u00e1 hann vegna fram\u00farskarandi varmalei\u00f0ni og t\u00e6rslunar\u00feols.<\/p>\n
Framlei\u00f0sla k\u00edsilk\u00edsils er h\u00e6gt a\u00f0 framkv\u00e6ma \u00e1 umhverfis\u00e1byrg\u00f0an h\u00e1tt me\u00f0 \u00fev\u00ed a\u00f0 n\u00fdta endurn\u00fdjanlega orkugjafa og kerfi til endurheimtar \u00fargangs til a\u00f0 l\u00e1gmarka losun gr\u00f3\u00f0urh\u00fasalofttegunda. Me\u00f0 sl\u00edkum a\u00f0ger\u00f0um geta framlei\u00f0endur dregi\u00f0 \u00far orkunotkun og minnka\u00f0 rekstrarkostna\u00f0 \u2013 sem er s\u00e9rstaklega mikilv\u00e6gt \u00ed n\u00faverandi a\u00f0st\u00e6\u00f0um \u00fear sem orkuver\u00f0 er a\u00f0 h\u00e6kka.<\/p>","protected":false},"excerpt":{"rendered":"
K\u00edsilkarb\u00ed\u00f0duft sem byltir framlei\u00f0sluferlum vi\u00f0 h\u00e1an hita K\u00edsilkarb\u00ed\u00f0 (SiC) sl\u00edpiefni f\u00e1st \u00ed m\u00f6rgum kornast\u00e6r\u00f0um og eru gjarnan notu\u00f0 b\u00e6\u00f0i \u00ed bundnum og h\u00fa\u00f0a\u00f0um sl\u00edpum. \u00de\u00f3 a\u00f0 SiC finnist n\u00e1tt\u00farulega \u00ed moissan\u00edtperlum, \u00fe\u00e1 byggir meirihluti framlei\u00f0slu SiC anna\u00f0hvort \u00e1 Acheson-ferlinu e\u00f0a t\u00e6kni efnauflsuppgufunar (chemical vapor deposition) til framlei\u00f0slu. Eldfastleiki, mikil varmalei\u00f0ni og \u2026 Read more<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-80","post","type-post","status-publish","format-standard","hentry","category-product"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts\/80","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/comments?post=80"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts\/80\/revisions"}],"predecessor-version":[{"id":81,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts\/80\/revisions\/81"}],"wp:attachment":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/media?parent=80"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/categories?post=80"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/tags?post=80"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}