Te hanganga rauemi me ngā āhuatanga o te karawiti silicon kua whakatōngia i raro i te pēhanga hauātea

Ko te C, N, B me ētahi atu rauemi mata kore-waikura hangarau-teitei hou, he whānui te pehanga hauhautanga o te silicon carbide sintered, he ōhanga, ka taea te kī he emery, he onepū ātete rānei. Ko te silicon carbide parakore he karaihe mārama kore tae. Na, he aha te hanganga rauemi me ngā āhuatanga o te silicon carbide?

Karāhe silicon kua whakatōngia i raro i te pēhanga hauātea

Hanganga rauemi o te silicon carbide kua whakakikoruatia ki te pēhanga hauātea:

Ko te karawiti silicon carbide i roto i te pēhanga hau e whakamahia ana i roto i te ahumahi he kōwhai mārama, he kakariki, he kikorangi me te mangu e ai ki te momo me te ihirangi o ngā poke, ā, he rerekē te parakore me te mārama. Kua wehea te hanganga tioata silicon carbide ki te plutonium e ono-kupu, te āhua taimana rānei, me te plutonium-sic kubiko. Ka hangaia e te plutonium-sic he momo whakarerekētanga nā te raupapa rerekē o te whakarārangi o ngā ngota waro me te silicon i roto i te hanganga tioata, ā, neke atu i te 70 ngā momo whakarerekētanga kua kitea. Ka huri te beta-SIC ki te alpha-SIC i runga ake i te 2100. Ka whakatikatikaina te tukanga ahumahi o te karawiti silicon ki te onepu quartz kounga teitei me te coke hinu i roto i te oumu ātete. Ka kuruhia ngā poraka karawiti silicon kua whakatikatikaina, ka horoia te waikawa-pūtake, ka wehea te aukume, ka tirotirohia, ka tīpakohia rānei te wai hei whakaputa i ngā momo hua rahi matūriki.

Ngā āhuatanga rauemi o te silicon carbide kua whakakikoruatia ki te pēhanga hauātea:

He pai te pumau matū o te karawaka silicon, te kawe wera, te tauwehenga whānui wera, te ātete kakahu, nō reira, hei tāpiri atu ki te whakamahinga whakakoi, he maha ngā whakamahinga: Hei tauira, ka pania te paura karawaka silicon ki te pakitara o roto o te impeller turbine, te poraka rango rānei me te tukanga motuhake, ka taea te whakapai ake i te ātete kakahu me te whakaroa i te ora o te 1 ki te 2 ngā wā. He mea hanga mai i ngā rauemi ātete wera, he iti te rahi, he mama te taumaha, he kaha teitei, he tino pai te whai huatanga o te pūngao. Ko te karawaka silicon kounga iti (tae atu ki te 85% SiC) he mea tango paitini hei whakanui ake i te tere hanga maitai me te whakahaere ngāwari i te hanganga matū hei whakapai ake i te kounga maitai. Hei tāpiri, he whānuitia te whakamahinga o te karawaka silicon sintered pehanga hauhautanga i roto i te hanga o ngā wāhanga hiko o ngā tokotoko waro silicon.

He tino mārō te karawiti silicon. Ko te mārō o Morse he 9.5, ko te tuarua anake ki te taimana mārō o te ao (10), he haurua-whakawhiti me te kawe wera pai rawa atu, ka taea te ātete ki te waikura i ngā pāmahana teitei. He 70 ngā momo tioata o te karawiti silicon. Ko te karawiti plutonium-silicon he isomer noa e hangaia ana i ngā pāmahana neke atu i te 2000, ā, he hanganga tioata hexagonal (he rite ki te wurtzite). Karawiti silicon sintered i raro i te pēhanga hau.

Te whakamahinga o te silicon carbide i roto i te umanga semiconductor

Ko te mekameka ahumahi semiconductor silicon carbide te nuinga o te paura silicon carbide parakore, te papa tioata kotahi, te pepa epitaxial, ngā wāhanga mana, te takai kōwae me ngā tono whakamutunga.

1. Papa tioata kotahi Ko te papa tioata kotahi he rauemi tautoko haurua-ira, he rauemi kawe hiko, he papa tipu epitaxial hoki. I tēnei wā, ko ngā tikanga tipu o te tioata kotahi SiC ko te tikanga whakawhiti kohu ā-tinana (tikanga PVT), te tikanga wāhanga wai (tikanga LPE), me te tikanga whakatakotoranga kohu matū pāmahana teitei (tikanga HTCVD). Ko te karawiti silicon kua whakatōngia i raro i te pēhanga hau.

2. Rau Epitaxial Rau epitaxial silicon carbide, rau silicon carbide, kiriata tioata kotahi (paparanga epitaxial) he rite te ahunga ki te tioata papa, ā, he whakaritenga motuhake mō te paparanga silicon carbide. I roto i ngā tono mahi, tata katoa ngā taputapu semiconductor āputa whānui e hangaia ana i roto i te paparanga epitaxial, ā, ko te maramara silicon tonu ka whakamahia hei paparanga anake, tae atu ki te paparanga o te paparanga epitaxial GaN.

3. Paura silicon carbide tino parakore Ko te paura silicon carbide tino parakore te rauemi mata mō te whakatipu i te tioata kotahi silicon carbide mā te tikanga PVT, ā, ka pā tika te parakore o te hua ki te kounga tipu me ngā āhuatanga hiko o te tioata kotahi silicon carbide.

4. He whānui te whānuitanga o te hiko o te taputapu hiko, he mea hanga ki te rauemi silicon carbide, he āhuatanga pāmahana teitei, auau teitei, me te tino pai. E ai ki te āhua whakahaere o te taputapu, ko te nuinga o te taputapu tuku hiko SiC he diode hiko me te ngongo pana hiko.

5. Te Whakamutunga I roto i ngā tono haurua-ā-ira tuatoru o te whakatipuranga, he painga tō ngā haurua-ā-ira silicon carbide ki te tautoko i ngā haurua-ā-ira gallium nitride. Nā te nui o te whai huatanga o te tahuritanga, ngā āhuatanga whakamahana iti, te mama me ētahi atu painga o ngā taputapu SiC, kei te piki haere tonu te hiahia o te umanga o raro, ā, kei te kitea te au ki te whakakapi i ngā taputapu SiO2.