Silicon carbide (SiC) budada dhoobada ahwaxay leedahay faa'iidooyinka xoogga heerkulka sare, caabbinta oksaydhka wanaagsan, caabbinta xirashada sare iyo xasilloonida kulaylka, isugeynta ballaarinta kulaylka yar, heerkulka sare ee kuleylka, xasilloonida kiimikada wanaagsan, iwm. Qalabka, balastarka u adkaysta heerkulka, qaybaha mishiinnada diyaaradaha, weelasha falcelinta kiimikada, tuubooyinka kulaylka iyo qaybaha kale ee farsamada ee xaaladaha adag, waana qalab casri ah oo aad loo isticmaalo.Ma aha oo kaliya inay door muhiim ah ka ciyaarto beeraha farsamada sare ee horumarinta (sida matoorada dhoobada, dayax-gacmeedka, iwm.), laakiin sidoo kale waxay leedahay suuq ballaadhan iyo goobo codsi oo lagu horumarinayo tamarta hadda jirta, birta, mishiinka, qalabka dhismaha. , warshadaha kiimikada iyo qaybaha kale.

Hababka diyaarinta eebudada carbide siliconInta badan waxa loo qaybin karaa saddex qaybood: Habka wejiga adag, habka wejiga dareeraha iyo habka wejiga gaaska.

1. Habka wejiga adag

Habka wejiga adag inta badan waxaa ka mid ah habka dhimista kaarbothermal iyo habka falcelinta tooska ah ee kaarboonka.Hababka dhimista kaarbotermal sidoo kale waxaa ka mid ah habka Acheson, habka foornada tooska ah iyo habka beddelka heerkulka sare.Silicon carbide budada ahdiyaarinta ayaa markii hore lagu diyaariyey habka Acheson, iyadoo la isticmaalayo kookaha si loo yareeyo Silicon dioxide heerkulka sare (qiyaastii 2400 ℃), laakiin budada helay habkani waxa uu leeyahay size qayb weyn (> 1mm), baabbi'iyaa badan oo tamar ah, iyo geeddi-socodka waa. adag.Sannadihii 1980-aadkii, qalab cusub oo loogu talagalay isku-darka budada β-SiC, sida foornada tooska ah iyo beddelaha heerkulka sare, ayaa soo muuqday.Sida polymerization wax ku ool ah oo gaar ah oo u dhexeeya microwave iyo walxaha kiimikaad ee adag ayaa si tartiib tartiib ah loo caddeeyay, tignoolajiyada isku-darka budada sic ee kuleylka microwave ayaa sii kordheysa.Habka falcelinta tooska ah ee kaarboonka silikoon waxa kale oo ka mid ah is-faafinta heerkulka sare (SHS) iyo habka alloying farsamada.Habka isku-darka dhimista ee SHS wuxuu isticmaalaa fal-celinta kacsiga ee u dhexeeya SiO2 iyo Mg si uu u buuxiyo kulayl la'aanta.Thebudada carbide siliconHabkani wuxuu leeyahay nadiif sare iyo cabbir yar, laakiin Mg ee alaabta ayaa loo baahan yahay in laga saaro hababka xiga sida pickling.

2 habka wejiga dareeraha

Habka wejiga dareeraha inta badan waxaa ka mid ah habka sol-gel iyo habka kuleyliyaha kuleyliyaha.Habka Sol-gel waa habka diyaarinta jel ka kooban Si iyo C by habka saxda ah ee sol-gel, ka dibna pyrolysis iyo hoos u heerkulka sare ee karbothermal si loo helo carbide silicon.Burburinta heerkulka sare ee polymer organic waa tignoolajiyad wax ku ool ah oo loogu talagalay diyaarinta silikoon carbide: mid waa in la dilo polysiloxane jel, falcelinta burburka si loo sii daayo monomers yar, oo ugu dambeyntii sameeyo SiO2 iyo C, ka dibna by falcelinta dhimista carbon si loo soo saaro budada SiC;Midda kale waa in la kululeeyo polysilane ama polycarbosilane si loo sii daayo monomers yaryar si ay u sameeyaan qalfoof, ugu dambeyntiina sameeyaanbudada carbide silicon.

3 Habka wajiga gaaska

Waqtigan xaadirka ah, isugeynta wajiga gaaska eesilikoon carbidebudada ultrafine dhoobada inta badan waxay isticmaashaa dhigista wajiga gaaska (CVD), Plasma Induced CVD, Laser Induced CVD iyo teknoolajiyada kale si ay u qurxiyaan walxaha dabiiciga ah heerkulka sare.Budada la helay waxay leedahay faa'iidooyinka nadiifnimada sare, cabbirka qayb yar, agglomeration qayb yar iyo xakamaynta sahlan ee qaybaha.Waa hab aad u horumarsan wakhtigan, laakiin leh qiime sare iyo wax-soosaar hooseeya, ma fududa in la gaaro wax soo saar ballaaran, waxayna ku habboon tahay samaynta qalabka shaybaarka iyo alaabooyinka leh shuruudo gaar ah.

Waqtigan xaadirka ah, thebudada carbide siliconInta badan loo isticmaalo waa submicron ama xitaa budada heerka nano, sababtoo ah xajmiga qaybta budada waa yar yahay, dhaqdhaqaaqa dusha sare leh, markaa dhibaatada ugu weyni waa in budada ay fududahay in la soo saaro agglomeration, waa lagama maarmaan in la beddelo dusha sare ee budada si looga hortago ama loo joojiyo. agglomeration sare ee budada.Waqtigan xaadirka ah, hababka loo kala firdhiyo budada SiC inta badan waxaa ka mid ah qaybaha soo socda: wax ka beddelka tamarta sare ee tamarta, dhaqidda, daaweynta kala firdhisan ee budada, wax ka beddelka daahan aan organic, wax ka beddelka daahan organic.