Porous TaC mowhiti

Ko te Silicon carbide (SiC), he rauemi semiconductor o te whakatupuranga tuatoru, he tino pai ngā āhuatanga pērā i te āputa roopu teitei, te kawe wera teitei, me te papa hiko pakaru teitei, he mea nui ki ngā mara pēnei i ngā waka hiko hou, te kawe tereina, te whakawhitiwhiti kōrero 5G, me ngā hikohiko mana. Ko te tipu o ngā tioata takitahi SiC me tino teitei ngā pāmahana (>2000°C) me ngā taiao ā-tinana me te matū kino, e tino nui ana ngā tono ki ngā wāhanga matua o ngā taputapu tipu, pēnei i ngā ipu para me ngā wāhanga papa wera. Ko ngā mowhiti porous tantalum carbide (TaC) e whakarato ana i a Semixlab, me ō rātou āhuatanga ā-tinana me te matū ahurei, kua waiho hei rauemi pai mō te arotau i te tukanga tipu o ngā tioata takitahi SiC.

Ngā āhuatanga matua o ngā mowhiti tantalum carbide porous

1. Pumautanga teitei o te pāmahana

Ko te ira rewa o te tantalum carbide tae atu ki te 3880℃, i roto i te whānuitanga pāmahana tipu kotahi-kirimana carbide (2000-2500℃) hei pupuri i te pumau o te hanganga, kia kore ai e rerekē te āhua, e memeha rānei.

He iti te tauwehenga whānui wera (6.3×10⁻⁶/K), ka whakaiti i te mōrearea o ngā kapiti i puta mai i te ahotea wera.

2. Te koretake o te matū

He tino hototahi ki te silicon carbide, te graphite me ētahi atu rauemi, ā, kāore e tauhohe ki te silicon (Si) me te waro (C) i te pāmahana teitei hei karo i te poke o ngā tioata. He ātete pai ki te waikura ki ngā hau silicon/waro.

Taipitopito Tere:

1. Ētahi atu ingoa: Mowhiti TaC porous, Porous Tantalum carbide, mowhiti pania TaC

2. Whakamahinga: Hei wāhanga matua o te pūnaha papa wera, ka whakahaere te mowhiti TaC porous i te tohatoha irahiko wera mā roto i tōna hanganga porous, ka whakaiti i te pikinga pāmahana radial, ā, ka whakapai ake i te ōritetanga tipu tuaka o te karaihe kotahi silicon carbide. Mēnā ka honoa ki te whakamahana graphite, ka taea te whakaiti i ngā hapa ahotea karaihe i puta mai i te wera nui o te rohe.

3. Ngā tawhā matua: Ko te ira rewa o te tantalum carbide tae atu ki te 3880℃, i roto i te awhe pāmahana tipu kotahi o te silicon carbide (2000-2500℃) hei pupuri i te pumau o te hanganga, hei karo i te whakarerekētanga, te mimiti rānei.

He iti te tauwehenga whānui wera (6.3×10⁻⁶/K), ka whakaiti i te mōrearea o ngā kapiti i puta mai i te ahotea wera.

Ko te tono matua i roto i te tipu o te karaihe kotahi o te silicon carbide

1. Te hoahoa o te papa wera me te whakahaere pāmahana

Hei wāhanga matua o te pūnaha papa wera, ka whakahaere te mowhiti TaC porous i te tohatoha irahiko wera mā roto i tōna hanganga porous, ka whakaiti i te pikinga pāmahana radial, ā, ka whakapai ake i te ōritetanga tipu tuaka o te karaihe.

Ka taea te whakaiti i ngā hapa ahotea tioata i puta mai i te wera nui o te rohe i te wā e honoa ana ki te whakamahana karāhe.

2. Te kawe hau me te arotautanga tauhohenga

I roto i te oumu tipu PVT, ka taea te whakamahi i ngā mowhiti TaC pūngāwerewere hei reo tohatoha hau hei tohatoha ōrite i te kohu Si/C ki te mata tioata purapura, ka taea ai te whakapai ake i te tere tipu tioata me te kounga tioata.

Ka taea e te hanganga o ngā pūwero te mimiti i ngā paru iti (pērā i ngā katote konganuku) me te whakapai ake i te parakore o te tioata (ātete >10⁵ Ω·cm).

3. Huinga tautoko roa

Hei utu mō ngā rauemi karāpeti tuku iho, ka whakamahia mō ngā mowhiti tautoko para, mō ngā paparanga whakamahana rānei hei karo i te raruraru o te paura karāpeti i ngā pāmahana tiketike, hei whakaroa hoki i te roa o te ora o ngā taputapu (>1000 hāora).

Ka whakaitihia te kukū o te ahotea wera e te hanganga pūngāwerewere, ā, ka whakaitihia hoki te mōrearea o te ngatata.

Te mowhiti TaC e whakamahia ana i roto i te tikanga PVT

Hei whakarāpopototanga, ka whakapai ake te Porous TaC Ring a Semixlab i te kounga o te tioata: ka whakaitihia e te papa wera ōrite te kiato o ngā hapa, ā, ka tautoko i te whakarite i ngā tioata takitahi SiC rahi nui e 6 inihi te rahi, neke atu rānei.

Arotau i te whai huatanga o te tukanga: Whakateretere ake i te whai huatanga o te tuku hau me te whakanui ake i te tere tipu mā te 10-15%.

Whakaitihia ngā utu whakaputa: Ka whakaitihia e ngā wāhanga roa-ora te auau o te tiaki taputapu, ā, ka whakaitihia te utu whānui mā te 20-30%.

Ngā painga o te hanganga porous

Mā te kaha o te pūngao ka taea te whakahaere (30-60%) ka arotau i te ara horapa hau, ā, ka whakatairanga i te kawe kohu Si/C ōrite i roto i te PVT (tikanga kawe kohu ā-tinana).

Ka whakarei ake te horahanga mata motuhake teitei i te whai huatanga o te irahiko wera, ka āwhina ki te hanga i tētahi āpure pāmahana ōrite, ā, ka ārai i ngā hapa tioata (pēnei i ngā microtubules me ngā nekehanga).