Ihe eji emepụta ihe ndị dị na C, N, B na ihe ndị ọzọ dị na teknụzụ dị elu na-anaghị oxide, silicon carbide nke a na-esi n'ikuku jupụta ebe niile, ọ bara uru, a pụrụ ikwu na ọ bụ emery ma ọ bụ ájá na-anaghị eguzogide okpomọkụ. Silicon carbide dị ọcha bụ kristal na-enweghị agba. Yabụ kedu ihe nhazi na njirimara nke silicon carbide?
Silikọn carbide e ji ájá mee n'okpuru nrụgide ikuku
Nhazi ihe nke ikuku sintered silicon carbide:
Carbide silicon nke a na-eji eme ihe n'ime ụlọ ọrụ na-acha odo odo, akwụkwọ ndụ akwụkwọ ndụ, acha anụnụ anụnụ na oji dịka ụdị na ọdịnaya nke ihe ndị na-adịghị ọcha si dị, ịdị ọcha ya dịkwa iche, nghọta ya dịkwa iche. A na-ekewa usoro kristal silicon carbide n'ime plutonium dị ka okwu isii ma ọ bụ diamond na cubic plutonium-sic. Plutonium-sic na-emepụta ụdị mgbanwe dị iche iche n'ihi usoro dị iche iche nke atọm carbon na silicon na nhazi kristal, achọpụtala ihe karịrị ụdị mgbanwe 70. beta-SIC na-agbanwe gaa na alpha-SIC n'elu 2100. A na-eme ka usoro mmepụta ihe nke silicon carbide dị mma site na iji ájá quartz dị elu na coke petroleum dị mma n'ime ọkụ na-eguzogide. A na-egweri blọk silicon carbide a nụchara anụcha, na-ehicha isi acid, nkewa magnetik, nyocha ma ọ bụ nhọrọ mmiri iji mepụta ọtụtụ ngwaahịa nha nha.
Njirimara ihe nke ikuku silikọn carbide sintered nrụgide:
Silicon carbide nwere ezigbo nkwụsi ike kemịkalụ, ike okpomọkụ, oke mgbasa okpomọkụ, na ike iyi, yabụ na mgbakwunye na ojiji abrasive, enwere ọtụtụ ojiji: Dịka ọmụmaatụ, a na-ete ntụ silicon carbide na mgbidi dị n'ime nke turbine impeller ma ọ bụ cylinder block na usoro pụrụ iche, nke nwere ike ime ka iguzogide iyi dịkwuo mma ma gbasaa ndụ nke ugboro 1 ruo 2. Ejiri obere nha, ibu dị mfe, ike dị elu nke ihe ndị na-eguzogide okpomọkụ, arụmọrụ ike dị mma nke ukwuu. Silicon carbide dị ala (gụnyere ihe dị ka 85% SiC) bụ ezigbo deoxidizer maka ịbawanye ọsọ ime ígwè na ijikwa ihe mejupụtara kemịkalụ ngwa ngwa iji melite mma ígwè. Na mgbakwunye, a na-ejikwa silicon carbide sintered nrụgide ikuku eme ihe n'ọtụtụ ebe n'ịmepụta akụkụ eletriki nke mkpanaka carbon silicon.
Silicon carbide siri ike nke ukwuu. Ike Morse bụ 9.5, nke abụọ karịa diamond siri ike nke ụwa (10), bụ semiconductor nwere ezigbo ike okpomọkụ, nwere ike iguzogide oxidation na okpomọkụ dị elu. Silicon carbide nwere opekata mpe ụdị kristal 70. Plutonium-silicon carbide bụ isomer a na-ahụkarị nke na-etolite na okpomọkụ karịrị 2000 ma nwee nhazi kristal hexagonal (yiri wurtzite). Silicon carbide Sintered n'okpuru nrụgide ikuku.
Ojiji nke silicon carbide na ụlọ ọrụ semiconductor
Usoro mmepụta ihe nke silicon carbide semiconductor gụnyere ntụ ntụ silicon carbide dị ọcha nke ukwuu, otu kristal substrate, mpempe akwụkwọ epitaxial, ihe ndị nwere ike, nkwakọ ngwaahịa modulu na ngwa njedebe.
1. Ihe mkpuchi kristal otu otu Ihe mkpuchi kristal otu bụ ihe na-akwado semiconductor, ihe na-eduzi na ihe nkwado epitaxial uto. Ugbu a, ụzọ uto nke kristal otu SiC gụnyere usoro nnyefe vapor anụ ahụ (usoro PVT), usoro mmiri mmiri (usoro LPE), na usoro itinye vapor kemịkalụ dị elu (usoro HTCVD). Carbide silicon a na-esi ísì ụtọ n'okpuru nrụgide ikuku.
2. Mpempe akwụkwọ Epitaxial Mpempe akwụkwọ Silicon carbide, mpempe akwụkwọ silicon carbide, otu ihe nkiri kristal (oyi akwa epitaxial) nwere otu ntụziaka dị ka kristal substrate nke nwere ụfọdụ ihe achọrọ maka substrate silicon carbide. N'ọrụ bara uru, a na-emepụta ngwaọrụ semiconductor gap wide band niile na oyi akwa epitaxial, a na-ejikwa chip silicon n'onwe ya naanị dị ka substrate, gụnyere substrate nke oyi akwa epitaxial GaN.
3. Ntụ ntụ silicon carbide dị elu Ntụ ntụ silicon carbide dị elu bụ ihe eji eme ka kristal silicon carbide dị elu site na usoro PVT, ịdị ọcha nke ngwaahịa ahụ na-emetụtakwa àgwà uto na njirimara eletriki nke kristal silicon carbide otu.
4. Ngwaọrụ ike bụ ike sara mbara nke e ji ihe silicon carbide mee, nke nwere njirimara nke okpomọkụ dị elu, ugboro ugboro dị elu na arụmọrụ dị elu. Dịka ụdị ọrụ nke ngwaọrụ ahụ si dị, ngwaọrụ ike SiC gụnyerekarị diode ike na tube mgba ọkụ ike.
5. Ọdụ N'ime ngwa semiconductor nke ọgbọ nke atọ, semiconductor silicon carbide nwere uru nke ịbụ ndị na-emekọ ihe na gallium nitride semiconductors. N'ihi arụmọrụ mgbanwe dị elu, njirimara okpomọkụ dị ala, obere ihe dị arọ na uru ndị ọzọ nke ngwaọrụ SiC, ọchịchọ nke ụlọ ọrụ na-agbada agbada na-aga n'ihu na-abawanye, enwerekwa usoro iji dochie ngwaọrụ SiO2.
Oge ozi: Juun-16-2023