Sil\u012bcija karb\u012bds (SiC) ir krist\u0101lisks savienojums, kas sast\u0101v no sil\u012bcija un oglek\u013ca un ko parasti izmanto k\u0101 abraz\u012bvu materi\u0101lu, pusvad\u012bt\u0101ju materi\u0101lu un termisko un meh\u0101nisko \u012bpa\u0161\u012bbu d\u0113\u013c. SiC ir ar\u012b lielisks augstsprieguma materi\u0101ls, kas pal\u012bdz samazin\u0101t gan izm\u0113rus, gan svaru, kad runa ir par elektrisko transportl\u012bdzek\u013cu sp\u0113ka elektronikas sist\u0113m\u0101m.<\/p>\n
Sint\u0113tiskais moisan\u012bts var b\u016bt sastopams ar\u012b dab\u0101 ret\u0101 miner\u0101la moisan\u012bta veid\u0101. Tas ir ciets, iztur\u012bgs materi\u0101ls, kura ciet\u012bba p\u0113c Mosa skalas ir 8-9 balles un tuvojas dimanta ciet\u012bbai.<\/p>\n
Sil\u012bcija karb\u012bds (SiC) ir bezoks\u012bda keramikas materi\u0101ls, ko pla\u0161i izmanto nodilumiztur\u012bg\u0101s deta\u013c\u0101s, pateicoties t\u0101 ciet\u012bbai, ugunsiztur\u012bgajos materi\u0101los un keramik\u0101, pateicoties termiskajai pretest\u012bbai, elektroniskaj\u0101s ier\u012bc\u0113s, pateicoties augst\u0101kajai veiktsp\u0113jai nek\u0101 sil\u012bcijam augstsprieguma vid\u0113, k\u0101 ar\u012b energoelektronik\u0101, kas darbojas pie liel\u0101kiem spriegumiem un \u0101trumiem. T\u0101 k\u0101 SiC ir plat\u0101ka joslas sprauga nek\u0101 t\u0101 sil\u012bcija analogiem, to var izmantot ar\u012b k\u0101 pusvad\u012bt\u0101ju materi\u0101lu energoelektronikas lietojumos.<\/p>\n
SiC ir \u0101rk\u0101rt\u012bgi ciets materi\u0101ls ar sp\u0113c\u012bg\u0101m kovalentaj\u0101m sait\u0113m starp oglek\u013ca un sil\u012bcija atomiem, kas nodro\u0161ina tam neticamu iztur\u012bbu, un p\u0113c savas neticam\u0101s iztur\u012bbas tas atpaliek tikai no bora karb\u012bda un dimanta. SiC ir \u0137\u012bmiski inerts un iztur\u012bgs pret koroziju pat tad, ja to kars\u0113 s\u0101lssk\u0101bes vai s\u0113rsk\u0101bes \u0161\u0137\u012bdumos, un tam piem\u012bt ar\u012b izcila siltumvad\u012btsp\u0113ja, kas \u013cauj saglab\u0101t apk\u0101rt\u0113j\u0101s vides temperat\u016bru ilgsto\u0161ai glab\u0101\u0161anai.<\/p>\n
SiC var ra\u017eot, rea\u0123\u0113jot Si atomiem ar oglekli fizik\u0101l\u0101s tvaiku kondens\u0101cijas reaktor\u0101 vai sa\u0137epinot t\u012bru pulveri, izmantojot parast\u0101s keramikas form\u0113\u0161anas metodes. Veido\u0161anas metodes izv\u0113le b\u016btiski ietekm\u0113 gal\u012bgo mikrostrukt\u016bru - reakcijas saist\u012bt\u0101 (a-SiC) un sa\u0137epin\u0101t\u0101 (4H-SiC) paveida fizik\u0101l\u0101s \u012bpa\u0161\u012bbas ir at\u0161\u0137ir\u012bgas.<\/p>\n
Sil\u012bcija karb\u012bds ir cieta un stingra keramikas viela, ko izmanto k\u0101 efekt\u012bvu abraz\u012bvu. T\u0101 k\u0101 sil\u012bcija karb\u012bds ir ciet\u0101ks un as\u0101ks par alum\u012bnija oks\u012bdu, tas ir ide\u0101la izv\u0113le cietu materi\u0101lu, piem\u0113ram, kr\u0101saino met\u0101lu un da\u017eu koksnes materi\u0101lu, sl\u012bp\u0113\u0161anai; turkl\u0101t tas labi darbojas ar\u012b slapj\u0101 pul\u0113\u0161an\u0101.<\/p>\n
Sil\u012bcija dioks\u012bdu (SiO2) ieg\u016bst, elektriskaj\u0101 kr\u0101sn\u012b rea\u0123\u0113jot un pirol\u012bzei izmantojot sil\u012bcija dioks\u012bda un oglek\u013ca mais\u012bjumu. P\u0113c izveido\u0161anas \u0161is materi\u0101ls ir da\u017e\u0101du to\u0146u - melns vai za\u013c\u0161, un to var pat le\u0123\u0113t ar sl\u0101pekli vai boru, lai p\u0101rveidotu t\u0101 \u012bpa\u0161\u012bbas par pusvad\u012bt\u0101ju.<\/p>\n
Sil\u012bcija karb\u012bda materi\u0101lu var izmantot da\u017e\u0101d\u0101s r\u016bpniec\u012bbas nozar\u0113s, pateicoties t\u0101 iztur\u012bbai un cit\u0101m \u012bpa\u0161\u012bb\u0101m, jo \u012bpa\u0161i lietojumiem, kam nepiecie\u0161ama augsta iztur\u012bba, piem\u0113ram, lo\u017eu necaurlaid\u012bgu vestu keramikas pl\u0101ksn\u0113m. Turkl\u0101t sil\u012bcija karb\u012bds var lepoties ar augstu termisko un \u0137\u012bmisko iztur\u012bbu, k\u0101 ar\u012b zemu termisko izple\u0161anos sal\u012bdzin\u0101jum\u0101 ar l\u012bdz\u012bgiem abraz\u012bviem materi\u0101liem, piem\u0113ram, volframa karb\u012bdu vai dimantu.<\/p>\n
Sil\u012bcija karb\u012bds ir \u0101rk\u0101rt\u012bgi ciets materi\u0101ls, kura ciet\u012bbas r\u0101d\u012bt\u0101js p\u0113c Mosa skalas ir 9 balles, kas to ierindo starp alum\u012bnija oks\u012bdu (9 balles) un dimantu (10 balles). Turkl\u0101t sil\u012bcija karb\u012bdam ir augsta siltumvad\u012btsp\u0113ja, zems termisk\u0101s izple\u0161an\u0101s koeficients un liela iztur\u012bba pret termiskiem triecieniem - \u012bpa\u0161\u012bbas, kas to padara piem\u0113rotu energoelektronikai, piem\u0113ram, elektrotransportl\u012bdzek\u013cu vilces invertoriem - t\u0101 pla\u0161\u0101 joslas sprauga \u013cauj tam efekt\u012bv\u0101k p\u0101rnest elektrisko ener\u0123iju nek\u0101 tradicion\u0101laj\u0101m sil\u012bcija ier\u012bc\u0113m.<\/p>\n
Sil\u012bcija karb\u012bds no moizan\u012bta at\u0161\u0137iras ar to, ka to var p\u0101rv\u0113rst keramik\u0101, augst\u0101s temperat\u016br\u0101s un spiedien\u0101 sa\u0137epinot t\u0101 graudus ar da\u017e\u0101diem saistviel\u0101m, kas \u013cauj to masveid\u0101 ra\u017eot k\u0101 abraz\u012bvu kop\u0161 1893. gada, ko bie\u017ei izmanto lietojumos, kam nepiecie\u0161ama augsta iztur\u012bba, piem\u0113ram, automa\u0161\u012bnu bremz\u0113s vai saj\u016bgos, gaismas diod\u0113s (LED) un detektoros pusvad\u012bt\u0101ju elektronikas ier\u012bc\u0113s.<\/p>\n
SiC ir sastopams da\u017e\u0101dos polimorfos ar at\u0161\u0137ir\u012bgu krist\u0101lisko strukt\u016bru un fizik\u0101laj\u0101m \u012bpa\u0161\u012bb\u0101m. Elektroniskie lietojumi parasti dod priek\u0161roku 4H-SiC politipam ar t\u0101 heksagon\u0101lo krist\u0101lisko strukt\u016bru, kas atg\u0101dina v\u0113rc\u012btu vai cinka blendi.<\/p>\n
Sil\u012bcija karb\u012bds (SiC) ir neviena oks\u012bda keramikas materi\u0101ls, ko pla\u0161i izmanto augsttemperat\u016bras meh\u0101niskiem lietojumiem un elektronikas, tostarp pusvad\u012bt\u0101ju, ra\u017eo\u0161an\u0101. SiC var lepoties ar \u0101rk\u0101rt\u012bgi augstu ku\u0161anas temperat\u016bru un zemu termisk\u0101s izple\u0161an\u0101s koeficientu, k\u0101 ar\u012b \u0137\u012bmisko inertumu, un t\u0101 iztur\u012bba, ciet\u012bba un ilgm\u016b\u017e\u012bba padara to noder\u012bgu t\u0101dos pielietojumos k\u0101 abraz\u012bv\u0101 str\u016bklas apstr\u0101de, kur nepiecie\u0161ama augsta stiepes iztur\u012bba, piem\u0113ram, katlu kr\u0101\u0161\u0146u sien\u0101m, \u0161aha \u0137ie\u0123e\u013cu mufe\u013ciem un kr\u0101\u0161\u0146u sl\u012bdce\u013ciem.<\/p>\n
Sil\u012bcija karb\u012bds (karborunds) ir ciets un trausls miner\u0101ls, kas sast\u0101v no sil\u012bcija un oglek\u013ca tetraedriem, kas sak\u0101rtoti tetraedriski. SiC ir atrodams tikai nelielos daudzumos meteor\u012btos un kimberl\u012btu atradn\u0113s, bet r\u016bpnieciskai izmanto\u0161anai parasti tiek ra\u017eots sint\u0113tiski. SiC t\u012br\u0101 veid\u0101 parasti ir izolators, bet to var le\u0123\u0113t, lai tam piemistu pusvado\u0161as \u012bpa\u0161\u012bbas, izmantojot piemais\u012bjumus, lai kontrol\u0113tu elektrovad\u012btsp\u0113ju, polarit\u0101ti un vad\u012btsp\u0113ju, kas \u013cauj tam darboties k\u0101 elektronu nes\u0113ja ier\u012bcei elektronu \u0137\u0113d\u0113s, piem\u0113ram, p-n savienojuma tranzistoriem, \u0160otkija barjeras diod\u0113m un MOSFET.<\/p>\n
Sil\u012bcija karb\u012bds (SiC) ir \u013coti iztur\u012bga bezoks\u012bda keramika ar daudz\u0101m v\u0113lam\u0101m \u012bpa\u0161\u012bb\u0101m. SiC ir ide\u0101li piem\u0113rots augstsprieguma lietojumiem, tostarp elektrisko transportl\u012bdzek\u013cu darbin\u0101\u0161anai; t\u0101 joslas sprauga ir plat\u0101ka nek\u0101 liel\u0101kajai da\u013cai sil\u012bcija pusvad\u012bt\u0101ju, t\u0101p\u0113c tas ir piem\u0113rot\u0101ks liel\u0101kam spriegumam.<\/p>\n
Sil\u012bcija karb\u012bds (CNC) ir viens no ciet\u0101kajiem jebkad redz\u0113tajiem materi\u0101liem, t\u0101p\u0113c prec\u012bziem griezumiem ir nepiecie\u0161ami asme\u0146i ar dimanta galiem. Turkl\u0101t t\u0101 siltumvad\u012btsp\u0113ja uzlabo efektivit\u0101ti, vienlaikus samazinot akumulatora komplekta izm\u0113ru transportl\u012bdzekl\u012b.<\/p>\n
M\u016bsdienu sil\u012bcija karb\u012bda ra\u017eo\u0161an\u0101 t\u012bru SiC sasmalcina pulver\u012b, sajauc to ar sa\u0137epin\u0101\u0161anas pal\u012bgviel\u0101m, kas nav oks\u012bdi, un sabl\u012bv\u0113 temperat\u016br\u0101 un spiedien\u0101. Sil\u012bcija pl\u0101k\u0161\u0146u ra\u017eo\u0161an\u0101 var izmantot ar\u012b \u0137\u012bmisko tvaiku nogulsn\u0113\u0161anu; tam nepiecie\u0161ams liels ener\u0123ijas daudzums, iek\u0101rtas un zin\u0101\u0161anas. A\u010desona s\u0101kotn\u0113jais process joproj\u0101m ir sint\u0113tisk\u0101 sil\u012bcija karb\u012bda ra\u017eo\u0161anas standarts.<\/p>\n
Sil\u012bcija karb\u012bds ir inerta keramika ar daudz\u0101m izdev\u012bg\u0101m \u012bpa\u0161\u012bb\u0101m, kas padara to \u013coti piepras\u012btu r\u016bpnieciskos apst\u0101k\u013cos, s\u0101kot no automobi\u013cu bremz\u0113m un saj\u016bgu l\u012bdz bru\u0146uvest\u0113m. Sil\u012bcija karb\u012bds nodro\u0161ina izcilu iztur\u012bbu pret augst\u0101m temperat\u016br\u0101m, abraz\u012bviem apst\u0101k\u013ciem, zemu termisk\u0101s izple\u0161an\u0101s koeficientu, k\u0101 ar\u012b ir \u013coti iztur\u012bgs pret koroziju. Sil\u012bcija karb\u012bda daudzpus\u012bba ir pier\u0101d\u012bjusi, ka t\u0101 daudzpus\u012bgais pielietojums r\u016bpniec\u012bb\u0101 ir daudzk\u0101rt izmantots, ieskaitot brem\u017eu klu\u010dus un lo\u017eu necaur\u0161aujo\u0161\u0101s vestes.<\/p>\n
Sil\u012bcija dioks\u012bda karb\u012bdu var ra\u017eot, sil\u012bcija smil\u0161u un oglek\u013ca mais\u012bjumu kars\u0113jot \u0137ie\u0123e\u013cu elektrisk\u0101s pretest\u012bbas tipa kr\u0101sn\u012b, izmantojot elektrisko str\u0101vu. P\u0113c izgatavo\u0161anas var izveidot spilgti za\u013cus krist\u0101lus, kas atg\u0101dina dimantu, un p\u0113c tam tos var att\u012br\u012bt, lai ieg\u016btu pusvad\u012bt\u0101ju kvalit\u0101tes sil\u012bcija karb\u012bdu.<\/p>\n
Sil\u012bcija karb\u012bda pusvad\u012bt\u0101jiem ir liel\u0101kas joslu atstarpes nek\u0101 to sil\u012bcija analogiem, kas \u013cauj elektronikai darboties pie augst\u0101kiem spriegumiem un frekvenc\u0113m, neapdraudot uzticam\u012bbu - \u0161\u012b \u012bpa\u0161\u012bba ir padar\u012bjusi tos par popul\u0101ru izv\u0113li t\u0101d\u0101s lieljaudas lietojumprogramm\u0101s k\u0101 elektrisko transportl\u012bdzek\u013cu energoelektronika un roveru un kosmosa zond\u0113s uzst\u0101d\u012btie instrumenti.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide (SiC) is a crystalline compound comprised of silicon and carbon that’s commonly used as an abrasive material, semiconductor material and for its thermal and mechanical properties. SiC is also an excellent high-voltage material which helps reduce both size and weight when it comes to electric vehicle power electronics systems. Synthetic moissanite can also […]<\/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-232","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts\/232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/comments?post=232"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts\/232\/revisions"}],"predecessor-version":[{"id":233,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts\/232\/revisions\/233"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/media?parent=232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/categories?post=232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/tags?post=232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}