Carbura de siliciu (SiC) este utilizat\u0103 pe scar\u0103 larg\u0103 \u00een toate industriile datorit\u0103 propriet\u0103\u021bilor sale versatile care o fac deosebit de benefic\u0103 \u00een dispozitivele semiconductoare de putere de \u00eenalt\u0103 tensiune, cum ar fi cele g\u0103site \u00een invertoarele de trac\u021biune ale vehiculelor electrice.<\/p>\n
Materialele ceramice, cum ar fi acest material refractar \u0219i ceramic, se m\u00e2ndresc cu rezisten\u021ba la c\u0103ldur\u0103 ridicat\u0103 \u0219i \u0219ocuri termice, au o rezisten\u021b\u0103 mecanic\u0103 excelent\u0103 \u0219i o rat\u0103 de expansiune foarte sc\u0103zut\u0103.<\/p>\n
Carbura de siliciu este un material dur \u0219i rezistent utilizat pe scar\u0103 larg\u0103 \u00een diverse procese industriale datorit\u0103 propriet\u0103\u021bilor sale chimice stabile, conductivit\u0103\u021bii termice ridicate, coeficientului sc\u0103zut de dilatare \u0219i rezisten\u021bei la uzur\u0103. Carbura de siliciu poate fi fabricat\u0103 \u00een diverse produse abrazive, inclusiv ro\u021bi de \u0219lefuit, h\u00e2rtie abraziv\u0103, benzi abrazive, pietre de ulei, blocuri abrazive \u0219i capete de \u0219lefuit pentru a t\u0103ia metale, ceramic\u0103, sticl\u0103 \u0219i materiale neferoase - precum \u0219i utilizat\u0103 \u00een sablare pentru a \u00eendep\u0103rta vopseaua, rugina sau orice contaminan\u021bi de suprafa\u021b\u0103 de pe suprafe\u021be contaminate.<\/p>\n
Carbura de siliciu abraziv\u0103 este o alegere din ce \u00een ce mai popular\u0103 \u00een lapid\u0103ria modern\u0103 datorit\u0103 durabilit\u0103\u021bii \u0219i accesibilit\u0103\u021bii sale. Disponibil \u00een diferite granula\u021bii pentru a satisface nevoile aplica\u021biilor de t\u0103iere sau lustruire a pietrei. Companiile electronice \u00eel utilizeaz\u0103, de asemenea, pentru a produce folii de \u00eembinare care asigur\u0103 c\u0103 firele de fibr\u0103 optic\u0103 de \u00eenalt\u0103 calitate sunt lustruite la netezimea necesar\u0103 \u00eenainte de a le uni.<\/p>\n
Carbura de siliciu neagr\u0103 (cunoscut\u0103 uneori sub denumirea de SiC tetragonal sau 3C-SiC) este un abraziv semi-friabil cu densitate medie, care are o bun\u0103 rezisten\u021b\u0103 la coroziune, dar mai pu\u021bin\u0103 rezisten\u021b\u0103 la acizi dec\u00e2t carbura de siliciu sinterizat\u0103. Conceput\u0103 ca un produs de proces vitrificat sau lipit cu r\u0103\u0219in\u0103, carbura de siliciu neagr\u0103 ofer\u0103 o rezisten\u021b\u0103 excelent\u0103 la coroziune, dar mai pu\u021bin\u0103 rezisten\u021b\u0103 la acizi dec\u00e2t SiC sinterizat.<\/p>\n
Carbura de siliciu este un material refractar extrem de durabil, adesea utilizat \u00een cuptoare, furnale \u0219i alte medii industriale. Rezist\u00e2nd la temperaturi de p\u00e2n\u0103 la 982 \u00b0C (1 800 \u00b0F), la acizi, alcalii \u0219i alte substan\u021be chimice corozive \u0219i av\u00e2nd propriet\u0103\u021bi excelente de conductivitate termic\u0103 \u0219i rezisten\u021b\u0103; carbura de siliciu ofer\u0103 protec\u021bie fiabil\u0103 \u00eempotriva condi\u021biilor extreme.<\/p>\n
Topirea \u00een cuptoare cu rezisten\u021b\u0103 produce o\u021bel de \u00eenalt\u0103 calitate din materii prime precum nisipul de cuar\u021b, cocsul de petrol \u0219i a\u0219chiile de lemn, care este apoi rafinat \u00een continuare prin procesare chimic\u0103 pentru a produce diverse calit\u0103\u021bi cu diferite dimensiuni ale particulelor \u0219i propriet\u0103\u021bi pentru diverse utiliz\u0103ri. Aplica\u021biile de fabricare a o\u021belului, precum \u0219i produc\u021bia de ceramic\u0103 beneficiaz\u0103 \u00een mare m\u0103sur\u0103 de utilizarea de\u0219eurilor de o\u021bel\u0103rie pentru fabricarea lingourilor de o\u021bel; \u00een plus, versatilitatea acestora le face utile \u00een aplica\u021bii de izolare \u0219i c\u0103ptu\u0219ire, cum ar fi cuptoarele, creuzetele, muflele, fronturile camerelor, precum \u0219i \u00een aplica\u021bii de c\u0103ptu\u0219ire.<\/p>\n
Carborundul este un compus dur, cristalin, din siliciu \u0219i carbon, cu formula chimic\u0103 SiC, cunoscut sub denumirea de carborundum. De\u0219i se g\u0103se\u0219te \u00een mod natural ca moissanite \u00een cantit\u0103\u021bi foarte limitate, cel mai adesea este produs sintetic pentru a fi utilizat ca pudr\u0103 abraziv\u0103 \u0219i pentru produc\u021bia de pietre pre\u021bioase. Carborundul este utilizat pe scar\u0103 larg\u0103 ca pulbere abraziv\u0103 \u00een produse precum ro\u021bile de \u0219lefuit, uneltele de t\u0103iere \u0219i \u0219mirghelul; produc\u021bia sa furnizeaz\u0103, de asemenea, c\u0103r\u0103mizi refractare utilizate \u00een cuptoare \u0219i furnale, precum \u0219i \u00een aplica\u021bii electronice avansate care necesit\u0103 temperaturi \u0219i tensiuni ridicate, cum ar fi diodele emi\u021b\u0103toare de lumin\u0103 (LED) pentru primele receptoare radio.<\/p>\n
Carbura de siliciu a fost utilizat\u0103 mult timp \u00een materiale abrazive \u0219i refractare, \u00eens\u0103 propriet\u0103\u021bile sale electrice devin din ce \u00een ce mai remarcabile. Rezisten\u021ba unic\u0103 a carburii de siliciu la temperaturi ridicate, tensiuni \u0219i condi\u021bii extreme o transform\u0103 \u00eentr-un material de \u00eenlocuire nepre\u021buit pentru materialele semiconductoare precum nitrurile de galiu sau chiar siliciul obi\u0219nuit \u00een aplica\u021biile electronice de putere.<\/p>\n
Carbura de siliciu pentru aplica\u021bii semiconductoare difer\u0103 semnificativ de verii s\u0103i abrazivi \u0219i refractari prin faptul c\u0103 produc\u021bia sa are loc prin produc\u021bia de material sinterizat, mai degrab\u0103 dec\u00e2t prin amestecarea pulberilor cu liant. Edward Goodrich Acheson a inventat aceast\u0103 metod\u0103 modern\u0103 de fabrica\u021bie \u00een 1891: Nisipul de siliciu amestecat cu carbon (sub form\u0103 de cocs m\u0103cinat) este \u00eenc\u0103lzit p\u00e2n\u0103 c\u00e2nd formeaz\u0103 o singur\u0103 bucat\u0103 solid\u0103 \u00eentr-un cuptor cu rezisten\u021b\u0103 electric\u0103 p\u00e2n\u0103 c\u00e2nd are loc sinterizarea.<\/p>\n
Materialul rezultat este durabil, rezistent la coroziune \u0219i u\u0219or de modelat \u00een forme pentru diferite aplica\u021bii prin sinterizarea sa repetat\u0103. Doparea \u00eei poate modifica caracteristicile electrice; \u00een mod obi\u0219nuit se adaug\u0103 elemente precum borul \u0219i aluminiul pentru un semiconductor de tip n \u0219i beriliu \u0219i galiu ca semiconductori de tip p.<\/p>\n
Laboratoarele EAG au o vast\u0103 experien\u021b\u0103 \u00een analizarea carburii de siliciu, utiliz\u00e2nd at\u00e2t tehnici de analiz\u0103 \u00een mas\u0103, c\u00e2t \u0219i tehnici de analiz\u0103 cu rezolu\u021bie spa\u021bial\u0103, pentru a \u00een\u021belege caracteristicile sale electrice.<\/p>\n
Carbura de siliciu, denumit\u0103 mai frecvent carborundum \/krbrndm\/, este un compus cristalin sintetic extraordinar de dur, din siliciu \u0219i carbon, cu formula SiC. De\u0219i se g\u0103se\u0219te \u00een mod natural sub form\u0103 de depozite minerale de moissanit, produc\u021bia de pudr\u0103 de carbur\u0103 de siliciu a \u00eenceput \u00een mas\u0103 dup\u0103 1893 pentru a fi utilizat\u0103 ca abraziv \u0219i \u00een aplica\u021bii ceramice dure, cum ar fi discurile de \u0219lefuit \u0219i pl\u0103cile de veste antiglon\u021b.<\/p>\n
Recent, siliciul a g\u0103sit aplica\u021bii pe scar\u0103 larg\u0103 ca dispozitiv electronic semiconductor, \u00een special \u00een electronica de putere. Datorit\u0103 propriet\u0103\u021bilor sale fizice \u0219i electrice unice, siliciul reprezint\u0103 o alegere excelent\u0103 de material pentru dispozitivele care func\u021bioneaz\u0103 la temperaturi sau tensiuni ridicate.<\/p>\n
Carbura de siliciu se deosebe\u0219te de majoritatea compu\u0219ilor industriali prin faptul c\u0103 ac\u021bioneaz\u0103 ca un izolator electric p\u00e2n\u0103 c\u00e2nd este dopat\u0103 cu impurit\u0103\u021bi care \u00eei modific\u0103 intervalul de band\u0103, cum ar fi dopajul cu aluminiu \u0219i bor pentru semiconductorii de tip P \u0219i dopajul cu fosfor \u0219i azot pentru semiconductorii de tip N.<\/p>\n
Produc\u0103torii dezvolt\u0103 carbur\u0103 de siliciu cubic\u0103 prin diverse procese, inclusiv tehnici de cre\u0219tere prin sublimare controlat\u0103 prin confinare, cum ar fi depunerea chimic\u0103 de vapori. \u00cen cadrul acestei metode, un amestec de gaze intr\u0103 \u00eentr-un mediu vid unde reac\u021bioneaz\u0103, depun\u00e2ndu-se \u00een cele din urm\u0103 pe substrat. Depunerea chimic\u0103 \u00een stare de vapori este adesea utilizat\u0103 ca parte a proceselor de sintez\u0103 a semiconductorilor pe baz\u0103 de carbon; depunerea chimic\u0103 \u00een stare de vapori produce, de asemenea, grafen; cu toate acestea, sublimarea controlat\u0103 prin confinare produce material de grafen de calitate superioar\u0103, ceea ce face ca aceast\u0103 metod\u0103 s\u0103 fie dificil de prelucrat; \u00een consecin\u021b\u0103, nu poate fi extins\u0103 la scar\u0103 larg\u0103 de produc\u021bie.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide (SiC) is widely utilized across industries due to its versatile properties that make it especially beneficial in high voltage power semiconductor devices like the ones found in electric vehicle traction inverters. Ceramic materials such as this refractory and ceramic material boast resistance to high heat and thermal shock, have excellent mechanical strength and […]<\/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-244","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/posts\/244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/comments?post=244"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/posts\/244\/revisions"}],"predecessor-version":[{"id":245,"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/posts\/244\/revisions\/245"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/media?parent=244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/categories?post=244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/ro\/wp-json\/wp\/v2\/tags?post=244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}