SiC otu kristal bụ otu IV-IV ngwakọta semiconductor ihe mejupụtara ihe abụọ, Si na C, na nha stoichiometric nke 1: 1. Isi ike ya bụ nke abụọ na naanị diamond.
Mbelata carbon nke usoro silicon oxide iji kwadebe SiC dabere na usoro mmeghachi omume kemịkalụ ndị a:
Usoro mmeghachi omume nke mbelata carbon nke silicon oxide dị mgbagwoju anya, nke mmeghachi omume okpomọkụ na-emetụta ngwaahịa ikpeazụ ozugbo.
N'ime usoro nkwadebe nke silicon carbide, a na-ebu ụzọ tinye ihe ndị ahụ n'ime ọkụ ọkụ. Igwe ọkụ na-eguzogide nwere mgbidi njedebe na nsọtụ abụọ ahụ, nke nwere electrode graphite na etiti, na isi ọkụ na-ejikọta electrodes abụọ ahụ. N'akụkụ akụkụ nke isi ọkụ ahụ, a na-etinye ihe ndị na-emepụta ihe na-ekere òkè na mmeghachi omume ahụ, mgbe ahụ, a na-etinye ihe ndị a na-eji maka nchekwa ọkụ na mpụta. Mgbe agbaze na-amalite, ọkụ na-eguzogide na-enye ume na okpomọkụ na-ebili na 2,600 ruo 2,700 degrees Celsius. A na-ebufe ike ọkụ eletrik na ụgwọ site na elu nke isi ọkụ, na-eme ka ọ dị ọkụ nke nta nke nta. Mgbe okpomọkụ nke ụgwọ ahụ gafere ogo Celsius 1450, mmeghachi omume kemịkalụ na-eme iji mepụta silicon carbide na carbon monoxide gas. Ka usoro ịgbaze na-aga n'ihu, ebe okpomọkụ dị elu na ụgwọ ahụ ga-eji nwayọọ nwayọọ gbasaa, na ọnụọgụ nke silicon carbide na-emepụta ga-abawanye. Silicon carbide na-aga n'ihu na-etolite n'ime ọkụ ahụ, site na evaporation na mmegharị ahụ, kristal na-eji nwayọọ nwayọọ na-eto ma na-emecha gbakọta n'ime kristal cylindrical.
Akụkụ nke mgbidi dị n'ime nke kristal na-amalite ire ere n'ihi okpomọkụ dị elu karịa 2,600 degrees Celsius. Ihe siliki emepụtara site na ire ere ga-ejikọta ya na ihe carbon dị na ụgwọ iji mepụta silicon carbide ọhụrụ.
Mgbe mmeghachi omume kemịkalụ nke silicon carbide (SiC) zuru ezu ma ọkụ ahụ jụrụ oyi, nzọụkwụ ọzọ nwere ike ịmalite. Nke mbụ, a na-ekpochapụ mgbidi nke ọkụ ọkụ ahụ, mgbe ahụ, a na-ahọrọ ihe ndị dị na ọkụ ọkụ ma na-edozi oyi akwa site na oyi akwa. A na-egwepịa ihe ndị a họọrọ iji nweta ihe granular anyị chọrọ. Na-esote, a na-ewepụ ihe ndị na-adịghị ọcha na akụrụngwa site na ịsacha mmiri ma ọ bụ ihicha ya na ngwọta acid na alkali, yana nkewa magnetik na ụzọ ndị ọzọ. Ngwa ngwa ndị a kpochara kwesịrị ka akpọọ nkụ wee nyochaa ya ọzọ, n'ikpeazụ enwere ike nweta ntụ ntụ silicon carbide dị ọcha. Ọ bụrụ na ọ dị mkpa, enwere ike ịhazigharị ntụ ntụ ndị a dịka eji eme ya n'ezie, dị ka ịkpụzi ma ọ bụ egweri dị mma, iji mepụta ntụ ntụ silicon carbide kacha mma.
Usoro ndị akọwapụtara bụ ndị a:
(1) Akụrụngwa
A na-emepụta obere ntụ ntụ silikoni carbide na-acha akwụkwọ ndụ site n'ịkụpịa silicon carbide na-acha akwụkwọ ndụ akwụkwọ ndụ. Ngwakọta kemịkalụ nke silicon carbide kwesịrị ịdị elu karịa 99%, na carbon na iron oxide efu kwesịrị ịbụ ihe na-erughị 0.2%.
(2) Agbajiri
Iji gwepịa ájá siliki carbide ka ọ bụrụ ezigbo ntụ ntụ, a na-eji ụzọ abụọ eme ihe ugbu a na China, otu bụ igwe igwe na-egweri mmiri na-adịghị akwụsị akwụsị, nke ọzọ na-eji igwe igwe ntụ ntụ ikuku na-egwepịa.
(3) nkewa magnetik
N'agbanyeghị usoro a na-eji gwepịa silicon carbide ntụ ntụ n'ime ezigbo ntụ ntụ, a na-ejikarị nkewa magnetik mmiri na nkewa magnetik eme ihe. Nke a bụ n'ihi na ọ dịghị uzuzu n'oge mmiri magnetik nkewa, ihe ndọta na-kpamkpam kewapụrụ, ngwaahịa mgbe magnetik nkewa nwere obere ígwè, na silicon carbide ntụ ntụ wepụrụ site magnetik ihe bụkwa obere.
(4) Nkewa mmiri
Ụkpụrụ bụ isi nke usoro nkewa mmiri bụ iji ụdị nhazi dị iche iche nke silicon carbide particles nke dị iche iche diameters na mmiri na-arụ ọrụ nhazi nha.
(5) Nleba anya nke Ultrasonic
Site na mmepe nke teknụzụ ultrasonic, a na-ejikwa ya n'ọtụtụ ebe na nyocha ultrasonic nke teknụzụ micro-powder, nke nwere ike dozie nsogbu nyocha dị ka adsorption siri ike, agglomeration dị mfe, ọkụ eletrik dị elu, ịdị mma dị elu, njupụta dị elu, na ike ndọda ọkụ. .
(6) Nyocha nke ọma
Nyocha ogo micropowder gụnyere ihe mejupụtara kemịkalụ, ihe mejupụtara nha nha na ihe ndị ọzọ. Maka ụzọ nyocha na ụkpụrụ ịdị mma, biko rụtụ aka na "Ọnọdụ nka na ụzụ Silicon Carbide."
(7) Na-egweri uzuzu mmepụta
Mgbe a chịkọtachara micro powder ma kpuchiri ya, enwere ike iji isi ihe na-edozi ntụ ntụ. Mmepụta nke ntụ ntụ ntụ ntụ nwere ike belata ihe mkpofu ma gbasaa agbụ ngwaahịa.
Oge nzipu: Mee-13-2024