I roto i te whanaketanga tonu o te ahumahi me te hangarau hou, he mea nui te mahi a ngā rauemi. Ina koa i te wā e pāngia ana e ngā wero o ngā taiao pāmahana teitei, ka pā tika te pumau o te mahi a te rauemi ki te mahi me te roa o te ora o ngā taputapu me ngā hua e pā ana.Ngā hua waro hiko, me tō rātou ātete pai ki te pāmahana teitei, kei te noho haere tonu hei whiringa pai mō ngā mara tono pāmahana teitei maha.
Mai i te tirohanga hanganga matū, ko te karawiti silicon he matū e rua ngā huānga: te silicon (Si) me te waro (C). Mā tēnei huinga ngota ahurei ka puta he āhuatanga ā-tinana, ā-matū hoki o te silicon karawiti. He tino pumau tōna hanganga tioata, ā, he tata te hononga o ngā ngota mā roto i ngā hononga honohono, ka puta he kaha hononga ā-roto kaha ki te karawiti silicon, koinei te pūtake o tōna ātete pāmahana teitei.
Ina tahuri tātou ki ngā mahi whaihua, ka tino kitea te painga o ngā hua silicon carbide i te ātete pāmahana teitei. I roto i te mara o ngā oumu ahumahi pāmahana teitei, ka ngawari te whakangawari, te whakarerekē, tae noa ki te pakaru i raro i te pāmahana teitei roa, e kore e pā noa ki te mahi noa o te oumu engari me whakakapi pinepine, ka piki ake ngā utu me ngā uauatanga tiaki. Ko te rauemi arai i hangaia ki te silicon carbide he rite ki te whakatakoto i tētahi "kākahu tiaki" kaha ki runga i te oumu. I ngā pāmahana tae atu ki te 1350 ℃, ka taea tonu e ia te pupuri i ngā āhuatanga ā-tinana me te matū pumau, ā, e kore e ngawari te whakangawari, te pirau rānei. Ehara i te mea ka roa ake te ora o te arai oumu me te whakaiti i te auau tiaki, engari ka whakarite hoki i te mahi pai me te pumau o ngā oumu ahumahi i roto i ngā taiao pāmahana teitei, ka whakarato i ngā taurangi pono mō te tukanga whakaputa.
Hei tauira, i roto i te ao rererangi, ina rere ana i ngā tere teitei, ka puta he wera nui mai i ngā waka rererangi mā te waku nui ki te hau, ka piki ake te pāmahana o te mata. Ko te tikanga me pai te ātete o ngā rauemi e whakamahia ana i roto i ngā waka rererangi ki te pāmahana teitei, ki te kore ka tūpono rātou ki ngā tūponotanga haumaru nui. Kua noho ngā rauemi hiato i hangaia ki te silicon carbide hei rauemi nui mō te hanga i ngā wāhanga matua pēnei i ngā wāhanga miihini waka rererangi me ngā pūnaha tiaki wera waka rererangi nā te mea he tino pai te ātete ki te pāmahana teitei. Ka taea e ia te pupuri i te mahi miihini pai i raro i ngā āhuatanga pāmahana tino teitei, te whakarite i te hanganga o ngā wāhanga, te āwhina i ngā waka rererangi ki te wikitoria i ngā herenga tere me te pāmahana, me te whakatutuki i te rerenga pai ake me te haumaru.
Mai i te tirohanga moroiti, ko te mea ngaro o te ātete pāmahana teitei o te silicon carbide kei roto i tōna hanganga tioata me ngā āhuatanga here matū. E ai ki te kōrero i mua ake nei, he tino teitei te kaha here covalent i waenga i ngā ngota silicon carbide, e uaua ai te wehe ngāwari i ngā ngota mai i ō rātou tūranga whatunga i ngā pāmahana teitei, ā, ka mau tonu te pumau o te hanganga o te rauemi. Heoi anō, he iti te tauwehenga whānui wera o te silicon carbide, ā, he iti noa te huringa rōrahi ina tino rerekē te pāmahana, ā, ka ārai i te raruraru o te pakaru o te rauemi i puta mai i te kukū ahotea nā te whānui me te whakahekenga wera.
I te whanaketanga tonu o te hangarau, kei te whakapai tonu hoki te mahi a ngā hua silicon carbide. Kua whakapai ake ngā kairangahau i te tukanga whakarite, kua arotauhia ngā whakatakotoranga rauemi, me ētahi atu huarahi hei whakanui ake i te ātete pāmahana teitei o ngā hua silicon carbide, me te whakawhānui ake i ā rātou āheinga tono ki ngā mara maha atu. I te heke mai, e whakapono ana mātou ka tiaho ngā hua silicon carbide ka whakaputa wera i roto i ngā ahumahi maha atu pēnei i te pūngao hou, te hikohiko, me te whakarewa me tō rātou ātete pāmahana teitei pai rawa atu, e whai wāhi ana ki te whanaketanga o ngā momo ahumahi.
Wā tuku: Hōngongoi-11-2025