Te Kōwhiri i te Para Karāhe Tika mō te Tipu Karāhe: He Aratohu Whai Hua

I te ao ote tipu tioata—ahakoa mō te SiC, te GaN, te hapaira, ētahi atu rauemi matatau rānei—ehara te ipu paraihe i te ipu noa iho. He rohe wera, he atanga tauhohenga, he kaitiaki hoki mō te parakore. Mā te whiriwhiri i te ipu paraihe tika ka pā nui ki te hua, te kounga tioata, me te pumau o te oumu.

Mā tēnei aratohu ka āwhina i ngā kaihanga tukanga, i ngā tīma R&D, me ngā kaiwhakahaere hoko ki te whakatere i ngā āhuatanga matua i te wā e whiriwhiri ana i ngā oko karāpeti mō te tipu tioata pāmahana teitei.

He aha ngā oko paraihe i te paerewa ahumahi

He whānuitia te whakamahinga o te karāpiti i roto i te tipu tioata nā te mea:

• Te kawe wera teitei me te tohatoha wera ōrite

• He ātete tino pai ki te ru wera, inā koa i roto i te huringa pāmahana teitei

• Te āheinga ki te whakarite mō ngā āhuahanga uaua me te whakauru ki ngā pūnaha paninga (hei tauira, ngā paninga SiC, TaC rānei)

• He iti te utu ki te whakataurite ki ngā uku whakarewa, ki ngā koranu ātete rānei

Engari ehara i te mea tino tika. Ka taea e te karāpiti te tauhohe ki ngā hau o te taiao, te whakapūmau i ngā pāmahana teitei, ā, ka tukuna ngā poke mena kāore i te tika te purenga, te paninga rānei.(1)

Ngā Whakaaro Matua i te Wā e Kōwhiria ana he Para

1. Te Awhe Pāmahana me te Pūmautanga

• Ka taea e te karāpeti paerewa te tu atu ki te ~2000°C, engari mō te tipu whakakōpiri o te SiC (>2200°C), he mea nui ngā oko paninga (hei tauira, TaC, SiC).
• Mō ngā huringa tipu roa, he mea nui te pumau o ngā āhuatanga me te ātete ki te ngokingoki.

2. Hototahi Rauemi

• Kei roto i te tukanga te Si, te C, ngā halogen, te hauwai rānei? Tērā pea ka rerekē te whakaekenga a ia mea ki te karāpiti.
• He maha ngā wā ka whai hua ngā tukanga e hangai ana ki te Si mai i ngā paninga SiC hei ārai i te poke me te waikura.

3. Te Whakahaere i te Parakore me te Parahanga

• He mea nui te karāpeti parakore teitei (>99.99%) mō ngā hikohiko mana me ngā papa haurua-ira.
• Whakaarohia ngā oko paninga ina taea e te hekenga o ngā rauemi (hei tauira, B, Al, Fe) te whakaiti i te kounga o te tioata.

4. Momo Paninga

• Paninga SiC: He mea noa mō te tipu o te tioata SiC; he pai te ōritenga wera, he koretake te matū
• Paninga TaC: Mō ngā pāmahana tino teitei; he pai ake te ārai waikura me te horapa
• Paninga Ranu: Ngā otinga paparanga ritenga mō ngā tauhohenga hau-āhua motuhake

5. Te Whakaurunga o te Kōtaha Wera me te Oumu

• Ka pā te āhua o te oko ki te ōritetanga o te pāmahana me te pumau o te rohe tipu.
• Arotauhia te hoahoa o te oko whakarewa i runga i te whakatauira rohe wera me te whakatauira CFD.

Ngā Mahanga Noa hei Ārai

• Te whakamahi i te karāpeti kāore i pania i roto i ngā āhuarangi pukuririTe tere o te pirau, te poke, me te ngoikore o te āheinga ki te tukurua.

• Te whakaiti i te matotoru, te ōrite rānei o te paninga: Ka pakaru wawe ngā paninga angiangi, kāore rānei i te ōrite.

• Te kore aro ki te rerekētanga o te whānui weraNgatata, wehewehe rānei i ngā huringa roa nā te kore ōrite o te paninga/turanga.

Ngā Tohutohu Tiaki me te Roanga Ora

• Tunua ngā oko whakarewa i mua i te whakamahinga tuatahi hei whakaiti i te putanga hau.

• Tirohia te kounga o te paninga i muri i ia whakamahinga, inā koa ngā taha me ngā kokonga.

• Aroturuki i te tatau o te huringa o te oko me te tauira o te pakaru—kāore e kitea katoatia ngā pakaru i waho.

Ngā Taunakitanga Motuhake mō te Taupānga