N'ihe gbasara sayensị sayensị, silicon carbide ceramics abụrụla "onye hụrụ n'anya" nke ọtụtụ mpaghara nkà na ụzụ dị elu n'ihi njirimara ha dị mma dị ka ike siri ike, ike dị elu, ezigbo nkwụsi ike nke okpomọkụ, na nkwụsi ike nke kemịkal. Site na ikuku ikuku ruo n'ichepụta semiconductor, site na ụgbọ ala ike ọhụrụ ruo igwe mmepụta ihe, ceramik silicon carbide na-arụ ọrụ dị mkpa. N'ime usoro nkwadebe nke ceramics silicon carbide, usoro ihe nkedo bụ isi ihe na-ekpebi njirimara ya na oke ngwa. Taa, anyị ga-abanye n'ime usoro nhazi nke silicon carbide ma lekwasị anya n'ịchọpụta uru pụrụ iche nke mmeghachi omume sintered.ceramics silicon carbide.
Ụzọ sintering nkịtị maka silicon carbide
Enwere ụzọ dị iche iche maka ịgbanye silicon carbide, nke ọ bụla nwere ụkpụrụ na njirimara ya pụrụ iche.
1. Ịpị ọkụ na-ekpo ọkụ: Usoro nke a na-agụnye itinye silicon carbide ntụ ntụ n'ime ihe ọkpụkpụ, na-etinye nrụgide ụfọdụ mgbe ị na-ekpo ọkụ, iji mezue usoro ịkpụzi na nkwụsịtụ n'otu oge. Ịpịpị ọkụ na-ekpo ọkụ nwere ike nweta ceramics silicon carbide dị obere na obere okpomọkụ na obere oge, yana nha ọka dị mma yana ezigbo ihe eji arụ ọrụ. Otú ọ dị, ihe na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ dị mgbagwoju anya, ọnụ ahịa ebu dị elu, usoro mmepụta ihe a chọrọ siri ike, na naanị akụkụ dị mfe nwere ike ịkwado ya, na-eme ka nrụpụta dị ala dị ala, nke ruo n'ókè ụfọdụ na-egbochi ngwa ngwa ya buru ibu.
2. Nrụgide ikuku nke ikuku: Nrụgide ikuku ikuku bụ usoro nke densification sintering nke silicon carbide site na kpo oku ya na 2000-2150 ℃ n'okpuru ikuku ikuku na inert ikuku ọnọdụ, site n'ịgbakwunye kwesịrị ekwesị sintering enyemaka. A na-ekewa ya n'ime usoro abụọ: nkwụsị nke steeti siri ike na nkwụsị nke mmiri mmiri. Usoro siri ike nke siri ike nwere ike nweta njupụta silicon carbide dị elu, na-enweghị oge iko n'etiti kristal, yana akụrụngwa akụrụngwa okpomọkụ dị elu; Ntugharị akụkụ mmiri mmiri nwere uru dị n'obere okpomoku dị ala, nha ọka pere mpe, yana nkwalite ihe na-ehulata ike yana ike mgbaji. Nrụgide ikuku ikuku enweghị ihe mgbochi na ọdịdị na nha ngwaahịa, ọnụ ahịa mmepụta dị ala, yana ihe onwunwe zuru oke zuru oke, mana okpomọkụ na-ekpo ọkụ dị elu na ike oriri dị elu.
3. Reaction sintering: Reaction sintered silicon carbide bụ nke mbụ P. Popper tụpụtara ya na 1950s. Usoro a gụnyere ịgwakọta isi iyi carbon na silicon carbide ntụ ntụ, na ịkwadebe ahụ ndụ ndụ site na ụzọ dị ka ịkpụzi injection, ịpị nkụ, ma ọ bụ ịpị oyi isostatic. Mgbe ahụ, a na-ekpo ọkụ billet ahụ n'elu 1500 ℃ n'okpuru ohere ma ọ bụ ikuku ikuku, mgbe ahụ silicon siri ike na-agbaze n'ime silicon mmiri mmiri, nke na-abanye na billet nwere pores site na capillary edinam. Mmiri silicon ma ọ bụ silik vapor na-enweta mmeghachi omume kemịkalụ na C na ahụ ndụ ndụ ndụ, yana ebe a na-emepụta β-SiC na-ejikọta ya na ihe mbụ SiC dị na ahụ na-acha akwụkwọ ndụ na-emepụta mmeghachi omume sintered silicon carbide seramiiki.
Uru nke Reaction Sintering Silicon Carbide ceramics
E jiri ya tụnyere ụzọ ndị ọzọ na-eme ihe, mmeghachi omume sintered silicon carbide ceramics nwere ọtụtụ uru dị ịrịba ama:
1. Obere okpomọkụ dị ala na ọnụ ahịa a na-achịkwa: Mmeghachi omume na-ekpo ọkụ na-adịkarị ala karịa ikuku ikuku nke ikuku, na-ebelata ike oriri na oke ọrụ okpomọkụ chọrọ maka ngwa ngwa. Okpomọkụ dị ala na-eme ka ọ dị ala na-akwụ ụgwọ maka akụrụngwa yana belata oriri ike n'oge usoro mmepụta, na-ebelata ọnụ ahịa mmepụta nke ọma. Nke a na-eme mmeghachi omume sintered silicon carbide ceramik nwere nnukwu uru akụ na ụba na mmepụta nnukwu.
2. nso net size akpụ, adabara mgbagwoju Ọdịdị: N'oge mmeghachi omume sintering usoro, ihe na-esiri ike na-enweta olu shrinkage. Àgwà ọma a na-eme ka ọ dị mma karịsịa maka ịkwadebe nnukwu akụkụ, ihe mgbagwoju anya nwere ụdị nhazi. Ma ọ bụ nkenke n'ibu components ma ọ bụ nnukwu ụlọ ọrụ akụrụngwa akụrụngwa, mmeghachi omume sintered silicon carbide ceramics nwere ike n'ụzọ ziri ezi izute imewe chọrọ, belata ụdi nhazi usoro, melite mmepụta arụmọrụ, na-ebelata ihe onwunwe ọnwụ na-eri abawanye kpatara nhazi.
3. Ngosipụta dị elu nke densification ihe: Site n'ịchịkwa ọnọdụ mmeghachi omume n'ụzọ ziri ezi, mmeghachi omume mmeghachi omume nwere ike nweta ọkwa dị elu nke densification nke silicon carbide ceramics. The ok Ọdịdị na-enye ihe onwunwe na magburu onwe n'ibu Njirimara, dị ka elu ekwe ike na mkpakọ ike, na-enyere ya aka ịnọgide na-enwe bughi iguzosi ike n'ezi ihe n'okpuru ịrịba mpụga ike. N'otu oge ahụ, nnukwu ihe owuwu ahụ na-emekwa ka ihe mgbochi na-eyi na ihe mgbochi corrosion dịkwuo elu, na-enye ya ohere ịrụ ọrụ nke ọma na gburugburu ebe ọrụ siri ike na ịgbatị ndụ ọrụ ya.
4. Ezi kemịkalụ kwụsie ike: mmeghachi omume sintered silicon carbide ceramics nwere magburu onwe iguzogide acid siri ike na ọla a wụrụ awụ. N'ụlọ ọrụ ndị dị ka kemịkalụ na metallurgical, akụrụngwa na-achọkarị ịbanye na mgbasa ozi dị iche iche na-emebi emebi. Mmeghachi omume sintered silicon carbide ceramics nwere ike iguzogide nbibi nke mgbasa ozi ndị a nke ọma, hụ na arụ ọrụ akụrụngwa na-arụ ọrụ, belata ụgwọ ọrụ na nnọchi anya, ma melite ọganihu mmepụta na nkwụsi ike.
Ọdabara na mpaghara dị iche iche
Site na uru ndị a, a na-eji seramik silicon carbide mmeghachi omume eme ihe n'ọtụtụ ebe. N'ihe gbasara akụrụngwa ọkụ ọkụ, ọ nwere ike iguzogide ọnọdụ okpomọkụ dị elu ma hụ na arụ ọrụ nke ọma nke kilns; N'ebe ndị na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ, ezigbo okpomọkụ ha na-eguzogide corrosion na-eme ka ha bụrụ nhọrọ kacha mma; N'ime akụrụngwa nchekwa gburugburu ebe obibi dị ka desulfurization nozzles, ọ nwere ike iguzogide mmebi nke mgbasa ozi na-emebi emebi ma hụ na arụ ọrụ kwụsiri ike ogologo oge nke akụrụngwa. Na mgbakwunye, mmeghachi omume sintered silicon carbide ceramics na-arụkwa ọrụ dị mkpa n'ọhịa dị elu dị ka fotovoltaics na ikuku ikuku.
Mmeghachi omume sintered silicon carbide ceramics nọ n'ọnọdụ dị mkpa na ezinụlọ seramiiki silicon carbide n'ihi uru pụrụ iche ha. Site na ọganihu teknụzụ na-aga n'ihu na njikarịcha nke usoro, a kwenyere na mmeghachi omume sintered silicon carbide ceramics ga-egosipụta ọmarịcha arụmọrụ ha na mpaghara ndị ọzọ, na-enye nkwado ihe onwunwe siri ike maka mmepe nke ụlọ ọrụ dị iche iche.
Oge nzipu: Jun-13-2025