Ko te tukanga whakamahana i ngā rauemi totoka i roto i te taiao korehau teitei hei whakakōpiri, hei mimiti rānei, kātahi ka whakatakoto ki runga i tētahi papa motuhake hei whiwhi i tētahi kiriata angiangi e mōhiotia ana ko te paninga mimiti korehau (e kiia nei ko te paninga mimiti).
Ko te hītori o te whakarite i ngā kiriata angiangi mā te tukanga mimiti korehau ka taea te whai i ngā tohu mai i te tekau tau atu i 1850. I te tau 1857, ka tīmata a M. Farrar i te ngana ki te paninga korehau mā te mimiti i ngā waea whakarewa ki roto i te hauota hei hanga kiriata angiangi. Nā te iti o te hangarau mimiti i taua wā, he tino roa te whakarite i ngā kiriata angiangi i tēnei ara, ā, kāore i te whai hua. Tae noa ki te tau 1930 i whakatūria ai he pūnaha papu hononga miihini mō te papu hinu, ā, ka tere te whanaketanga o te hangarau mimiti, ā, ka huri te paninga mimiti me te mimiti hei hangarau whai hua.
Ahakoa he hangarau tawhito te mimiti korehau, he tikanga tino noa tēnei e whakamahia ana i roto i ngā taiwhanga me ngā ahumahi. Ko ōna painga matua ko te ngāwari o te whakahaere, te ngāwari o te whakahaere i ngā tawhā whakatakotoranga, me te tino parakore o ngā kiriata e puta mai ana. Ka taea te wehewehe i te tukanga paninga korehau kia toru ngā taahiraa e whai ake nei.
1) ka whakamahanahia te rauemi pūtake, ka rewahia kia mimiti, kia memeha rānei; 2) ka tangohia te mamaoa mai i te rauemi pūtake kia mimiti, kia memeha rānei.
2) Ka whakawhitia te kohu mai i te rauemi pūtake ki te papa.
3) Ka whakapūpū te kohu ki runga i te mata o te papa hei hanga i tētahi kiriata totoka.
Ko te mimiti korehau o ngā kiriata angiangi, ko te nuinga he kiriata polycrystalline, he kiriata amorphous rānei, ko te tipu kiriata ki te moutere te mea matua, mā roto i ngā tukanga e rua o te nucleation me te kiriata. Ka tukinga ngā ngota mimiti (ngota rānei) ki te papa, tetahi wāhanga o te piri pumau ki te papa, tetahi wāhanga o te adsorption ka mimiti atu i te papa, me tetahi wāhanga o te whakaata tika mai i te mata o te papa. Ko te piri ki te mata o te papa o ngā ngota (ngota rānei) nā te nekehanga wera ka taea te neke i te mata, pērā i te pā ki ētahi atu ngota ka kohikohi hei tautau. Ko ngā tautau ka tino puta i te wāhi e teitei ana te ahotea i runga i te mata o te papa, i runga rānei i ngā taahiraa whakarewa o te papa tioata, nā te mea ka whakaitihia te kaha kore utu o ngā ngota mimiti. Koinei te tukanga nucleation. Ko te whakatakotoranga atu o ngā ngota (ngota) ka hua ake te whānui o ngā tautau āhua moutere (ngota) kua whakahuatia i runga ake nei tae noa ki te toronga ki roto i te kiriata tonu. Nō reira, ko te hanganga me ngā āhuatanga o ngā kiriata polycrystalline mimiti korehau e pā tata ana ki te tere mimiti me te pāmahana o te papa. I te nuinga o te wā, ko te iti o te pāmahana o te papa, ko te teitei ake o te tere mimiti, ko te angiangi ake, ko te matotoru ake hoki o te kakano kiriata.
–Nā tekaihanga mīhini paninga korehauGuangdong Zhenhua
Wā tuku: Maehe-23-2024