Sil\u012bcija karb\u012bds ir iztur\u012bgs savienojums, kas rodas augsttemperat\u016bras \u0137\u012bmisk\u0101s reakcijas rezult\u0101t\u0101 starp sil\u012bciju un oglekli; tam piem\u012bt \u0101rk\u0101rt\u012bgi iztur\u012bga krist\u0101liska strukt\u016bra, kas padara to piem\u0113rotu lieto\u0161anai nelabv\u0113l\u012bgos apst\u0101k\u013cos.<\/p>\n
Sil\u012bcija karb\u012bda ra\u017eo\u0161anas proces\u0101 ir nepiecie\u0161ama stingra kvalit\u0101tes kontrole, lai nodro\u0161in\u0101tu t\u0101 ilgm\u016b\u017e\u012bbu nelabv\u0113l\u012bgos darba apst\u0101k\u013cos. M\u0113s izp\u0113t\u012bsim, k\u0101di faktori ietekm\u0113 t\u0101 ilgm\u016b\u017e\u012bbu.<\/p>\n
SiC ir \u0101rk\u0101rt\u012bgi cietais, bl\u012bvais materi\u0101ls, kas sast\u0101v no da\u017e\u0101d\u0101m sil\u012bcija karb\u012bda krist\u0101lisk\u0101s strukt\u016bras form\u0101m jeb polotipiem, kur oglek\u013ca atomi ir izk\u0101rtoti tetraedriski, veidojot t\u0101 sl\u0101\u0146us vai polotipus; t\u0101d\u0113j\u0101di rodas strukt\u016bras, kur\u0101s oglek\u013ca atomi ir savienoti ar tetraedrisk\u0101m sait\u0113m, kas izk\u0101rtotas sl\u0101\u0146os vai polotipos, nodro\u0161inot materi\u0101lam unik\u0101las korozijas iztur\u012bbas \u012bpa\u0161\u012bbas. Bezspiediena cepta sil\u012bcija karb\u012bda (C\/C-SiC) materi\u0101ls ir iztur\u012bgs pret vis\u0101m sk\u0101b\u0113m (s\u0101lssk\u0101bi un s\u0113rsk\u0101bi), b\u0101z\u0113m, \u0161\u0137\u012bdin\u0101t\u0101jiem un oksid\u0113jo\u0161\u0101m vid\u0113m, piem\u0113ram, sl\u0101pek\u013csk\u0101bi, vienlaikus saglab\u0101jot pietiekamu iztur\u012bbu pret koroziju, t\u0101p\u0113c no C\/C-SiC izgatavotus cietos t\u012b\u0123e\u013cus bie\u017ei izmanto k\u0101 kr\u0101sns ap\u0161uvumu.<\/p>\n
SiC materi\u0101lu korozija var b\u016bt \u0101rk\u0101rt\u012bgi sare\u017e\u0123\u012bta, un to ietekm\u0113 vair\u0101ki faktori. Materi\u0101lu iztur\u012bba pret koroziju ir atkar\u012bga no to biezuma un oks\u012bda sl\u0101\u0146a dzi\u013cuma, kas veidojas oksid\u0101cijas procesu laik\u0101; turkl\u0101t \u0137\u012bmiskie un fizik\u0101lie meh\u0101nismi, kas nosaka slaveno parabolisko oksid\u0101cijas \u0101trumu, joproj\u0101m nav piln\u012bb\u0101 izprasti.<\/p>\n
Ilgtermi\u0146a korozijas testi ir nepiecie\u0161ami, lai nov\u0113rt\u0113tu koroz\u012bvas vides ietekmi uz materi\u0101la iztur\u012bbu. Ilgtermi\u0146a korozija var veicin\u0101t virsmas defektu veido\u0161anos, kas laika gait\u0101 samazina materi\u0101lu iztur\u012bbu un kalpo\u0161anas ilgumu.<\/p>\n
Uz\u0146\u0113mums \u201eElkem\u201c veica pla\u0161u korozijas jut\u012bguma anal\u012bzi \u010detriem SiC\u2013SiC pl\u0101k\u0161\u0146u savienojumu veidiem, kas tika izveidoti, izmantojot met\u0101la dif\u016bzijas savieno\u0161anu ar molibd\u0113na vai tit\u0101na starpsl\u0101ni, reakcijas sinter\u0113\u0161anu un SiC nanopulvera sinter\u0113\u0161anu. Visi paraugi iztur\u0113ja piecu ned\u0113\u013cu ilgus hidrotermiskos testus paaugstin\u0101t\u0101 temperat\u016br\u0101 bez radi\u0101cijas pies\u0101r\u0146ojuma.<\/p>\n
Sil\u012bcija karb\u012bds (SiC) ir \u0101rk\u0101rt\u012bgi cietais sint\u0113tiskais materi\u0101ls, kura ciet\u012bba p\u0113c Mosa skalas atrodas starp alum\u012bnija oks\u012bdu (9) \u2014 vid\u0113ji 9 \u2014 un dimantu (vid\u0113ji 10). SiC tiek izmantots k\u0101 abraz\u012bvs materi\u0101ls un nodilumiztur\u012bgas deta\u013cas meh\u0101niskaj\u0101s sist\u0113m\u0101s; k\u0101 ugunsiztur\u012bgs ap\u0161uvums r\u016bpnieciskaj\u0101s kr\u0101sn\u012bs un keramik\u0101; k\u0101 ugunsiztur\u012bgs p\u0101rkl\u0101jums lidma\u0161\u012bnu degvielas tvert\u0146u iek\u0161pus\u0113; k\u0101 ugunsiztur\u012bgs ap\u0161uvums r\u016bpniec\u012bb\u0101 izmantotaj\u0101s kr\u0101sn\u012bs; k\u0101 ar\u012b augstas temperat\u016bras pusvad\u012bt\u0101ju elektroniskaj\u0101s ier\u012bc\u0113s.<\/p>\n
Sil\u012bcija karb\u012bds ir izcils termomeh\u0101nisks keramikas materi\u0101ls ar zemu siltuma izple\u0161an\u0101s koeficientu, kas \u013cauj tam saglab\u0101t formu un izm\u0113rus strauju temperat\u016bras sv\u0101rst\u012bbu laik\u0101 un padara uzticam\u0101kus izstr\u0101d\u0101jumus, kas darbojas ekstrem\u0101los apst\u0101k\u013cos.<\/p>\n
Sil\u012bcija karb\u012bdam piem\u012bt izcilas meh\u0101nisk\u0101s \u012bpa\u0161\u012bbas un lieliska siltumvad\u012btsp\u0113ja pla\u0161\u0101 darba temperat\u016bras diapazon\u0101, turkl\u0101t tas ir \u013coti iztur\u012bgs pret koroziju un \u0137\u012bmisko iedarb\u012bbu, t\u0101d\u0113\u013c tas ir piem\u0113rots lieto\u0161anai nelabv\u0113l\u012bgos apst\u0101k\u013cos t\u0101d\u0101s nozar\u0113s k\u0101 automobi\u013cu r\u016bpniec\u012bba, avi\u0101cija un elektronika.<\/p>\n
\u0160\u012b gr\u0101mata iepaz\u012bstina ar mikrosist\u0113mu tehnolo\u0123iju, kas balst\u0101s gan uz masveida, gan pl\u0101nsl\u0101\u0146a sil\u012bcija karb\u012bdu (SiC), aptverot t\u0101s izaugsmi k\u0101 b\u016btisku platformu mikrosist\u0113m\u0101m, kas paredz\u0113tas nelabv\u0113l\u012bgiem apst\u0101k\u013ciem, apvienojot elektronisko ier\u012b\u010du ra\u017eo\u0161anu ar meh\u0101niskaj\u0101m MEMS ier\u012bc\u0113m. \u0160aj\u0101 gr\u0101mat\u0101 tiek p\u0113t\u012btas ar\u012b gr\u016bt\u012bbas, kas saist\u012btas ar da\u017e\u0101du procesu un materi\u0101lu apvieno\u0161anu lietojamos sensoru modu\u013cos; jo \u012bpa\u0161i tiek padzi\u013cin\u0101ti izp\u0113t\u012bta komponentu temperat\u016bras neatbilst\u012bba, k\u0101 ar\u012b SiC jut\u012bba pret vides ietekmi, vienlaikus pla\u0161i aprakstot jaun\u0101kos sasniegumus gan mas\u012bv\u0101 SiC materi\u0101la tehnolo\u0123ij\u0101, gan SiC pl\u0101nsl\u0101\u0146a tehnolo\u0123ij\u0101s.<\/p>\n
Volframa karb\u012bds (WC) ir svar\u012bgs un daudzpus\u012bgs sakaus\u0113jums, ko izmanto da\u017e\u0101dos pielietojumos; tam piem\u012bt \u0101rk\u0101rt\u0113ja ciet\u012bba, augsta vad\u012btsp\u0113ja, zema siltuma izple\u0161an\u0101s un iztur\u012bba pret koroziju. Volframa karb\u012bds rodas, kad t\u012bru volframa pulveri sajauc ar citiem met\u0101liem, piem\u0113ram, oglekli, ni\u0137eli vai kobalta, izmantojot procesu, ko sauc par aglomer\u0113\u0161anu; p\u0113c tam, kad tas ir pres\u0113ts un kalts, ieg\u016bstot formas konkr\u0113tiem lietojumiem, visbie\u017e\u0101k \u2014 grie\u0161anas instrumentus. Volframa \u0101rk\u0101rt\u012bg\u0101 iztur\u012bba iev\u0113rojami p\u0101rsniedz citu met\u0101lu iztur\u012bbu, ko izmanto grie\u0161anas r\u012bku ra\u017eo\u0161an\u0101; turkl\u0101t to bie\u017ei izmanto milit\u0101r\u0101s vien\u012bbas, pielietojot uzbrukuma taktiku, ko sauc par kin\u0113tisko bombard\u0113\u0161anu, kur\u0101 lodes tiek \u0161autas tie\u0161i pret ienaidniekiem, lai p\u0101rvar\u0113tu bru\u0146u aizsardz\u012bbu un iek\u013c\u016btu ienaidnieka aizsardz\u012bbas l\u012bnij\u0101s.<\/p>\n
Volframa karb\u012bds (WC) tiek pla\u0161i izmantots prec\u012bzijas in\u017eenierij\u0101, jo tas sp\u0113j iztur\u0113t \u013coti augstus \u0101trumus un spiedienus, turkl\u0101t tam ir visaugst\u0101kais Janga modulis, visciet\u0101k\u0101 virsma, viszem\u0101kais siltuma izple\u0161an\u0101s koeficients un vislab\u0101k\u0101 nodilumiztur\u012bba starp visiem met\u0101liem. Turkl\u0101t WC \u013coti laba plastiskums \u013cauj to form\u0113t stie\u0146os vai ekstrud\u0113t k\u0101 stiepli, piem\u0113ram, kv\u0113lspuldz\u0113s.<\/p>\n
Volframa karb\u012bds ir labi paz\u012bstams k\u0101 trausls materi\u0101ls, kas sp\u0113c\u012bgu triecienu ietekm\u0113 ir pak\u013cauts plais\u0101\u0161anai vai l\u016b\u0161anai, t\u0101d\u0113\u013c tas ir maz\u0101k iztur\u012bgs pret triecieniem nek\u0101 d\u0101rgmet\u0101li, piem\u0113ram, zelts un plat\u012bns. Tom\u0113r tas joproj\u0101m tiek pla\u0161i izmantots milit\u0101r\u0101s jom\u0101s, kur iztur\u012bba pret triecieniem ir vit\u0101li svar\u012bga, piem\u0113ram, NCSU kr\u0101tera test\u0113\u0161anas iek\u0101rt\u0101, kur volframa karb\u012bda buferdiski tiek izmantoti, lai absorb\u0113tu l\u0101di\u0146u triecienus.<\/p>\n
Sil\u012bcija karb\u012bda unik\u0101l\u0101 keramikas un pusvad\u012bt\u0101ju \u012bpa\u0161\u012bbu kombin\u0101cija padara to par \u013coti piel\u0101gojamu materi\u0101lu, kas piem\u0113rots izmanto\u0161anai r\u016bpniec\u012bb\u0101 un elektronikas jom\u0101. Pateicoties \u0161\u012bm \u012bpa\u0161\u012bb\u0101m, sil\u012bcija karb\u012bda elektronika var darboties pat nelabv\u0113l\u012bgos apst\u0101k\u013cos, kur valda augstas temperat\u016bras un sprieguma l\u012bme\u0146i, kas parasti ne\u013cautu citai elektronikai darboties pareizi.<\/p>\n
No \u0137\u012bmisk\u0101 viedok\u013ca sil\u012bcija karb\u012bds ir neticami stabils materi\u0101ls. Tas ir iztur\u012bgs pret liel\u0101ko da\u013cu sk\u0101bju (s\u0101lssk\u0101bi, s\u0113rsk\u0101bi un fluor\u016bde\u0146ra\u017esk\u0101bi), s\u0101\u013ciem un s\u0101rmiem, iz\u0146emot koncentr\u0113tu s\u0113rsk\u0101bi; turkl\u0101t tas nerea\u0123\u0113 ar \u016bdeni, t\u0101d\u0113\u013c tas ir ide\u0101ls materi\u0101ls deta\u013c\u0101m, kur\u0101m nepiecie\u0161ama ilgsto\u0161a saskare ar \u0161\u0137idrumiem.<\/p>\n
Sil\u012bcija karb\u012bds pateicoties savai atomu strukt\u016brai piem\u012bt izcilas elektrisk\u0101s \u012bpa\u0161\u012bbas. Tas kristaliz\u0113jas bl\u012bv\u0101s strukt\u016br\u0101s, kas sast\u0101v no kovalenti saist\u012btiem oglek\u013ca un sil\u012bcija sl\u0101\u0146iem. \u0160ie sl\u0101\u0146i var b\u016bt sak\u0101rtoti da\u017e\u0101d\u0101s konfigur\u0101cij\u0101s, ko sauc par politipiem; katrs politips izce\u013cas ar savu sl\u0101\u0146u sak\u0101rtojuma sec\u012bbu, radot da\u017e\u0101das krist\u0101la strukt\u016bras, katrai no kur\u0101m piem\u012bt unik\u0101las \u012bpa\u0161\u012bbas.<\/p>\n
Pateicoties sav\u0101m daudzpus\u012bgaj\u0101m \u012bpa\u0161\u012bb\u0101m, sil\u012bcija karb\u012bds ie\u0146em vado\u0161o lomu tehnolo\u0123isko inov\u0101ciju jom\u0101. T\u0101 izmanto\u0161ana ekstrem\u0101los un augstas veiktsp\u0113jas in\u017eeniertehniskajos risin\u0101jumos, piem\u0113ram, s\u016bk\u0146u gult\u0146os, v\u0101rstos, smil\u0161u str\u016bklas in\u017eektoros un ekstr\u016bzijas matric\u0101s, k\u0101 ar\u012b pusvad\u012bt\u0101ju ier\u012b\u010du ra\u017eo\u0161an\u0101, kas darbojas ekstrem\u0101los apst\u0101k\u013cos, var nodro\u0161in\u0101t iev\u0113rojamus uzlabojumus da\u017e\u0101d\u0101s nozar\u0113s.<\/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\/lv\/wp-json\/wp\/v2\/posts\/21","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/comments?post=21"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/posts\/21\/revisions"}],"predecessor-version":[{"id":22,"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/posts\/21\/revisions\/22"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/media?parent=21"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/categories?post=21"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lv\/wp-json\/wp\/v2\/tags?post=21"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}