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I roto i tētahi whanaketanga nui i roto i te ao pūtaiao rauemi, kua anga whakamua ngā kairangahau i roto i te hanga o te α-Al2O3 (alpha-alumina) tino parakore, he rauemi e mōhiotia ana mō ōna āhuatanga tino pai me ōna whakamahinga whānui. I puta mai tēnei i muri i ngā kereme o mua a Amrute et al. i roto i tā rātou pūrongo 2019, i kī ai kāore he tikanga o nāianei e taea te hanga i te α-Al2O3 me te tino parakore me te horahanga mata e neke ake ana i ētahi paepae. I ara ake i ā rātou kitenga ngā āwangawanga mō ngā herenga o ngā tikanga whakaputa o nāianei me ngā pānga ki ngā ahumahi e whakawhirinaki ana ki tēnei rauemi nui.
Ko te Alpha-alumina he momo konumohe waikura e tino rongonui ana mō tōna pakeke, tōna pumau wera, me ōna āhuatanga ārai hiko. He whānuitia te whakamahinga i roto i ngā momo mahi, tae atu ki ngā uku, ngā mea whakakoi, me te mea hei papa i roto i ngā taputapu hiko. Kei te piki haere te hiahia mō te α-Al2O3 tino parakore, inā koa i roto i ngā mara o ngā hiko me ngā uku matatau, ka pā kino ngā poke ki te mahi me te pono.
I roto i te pūrongo o te tau 2019 nā Amrute me ētahi atu, i whakaatuhia ngā wero i pā ki ngā kairangahau me ngā kaihanga ki te whakatutuki i ngā taumata parakore e hiahiatia ana me ngā āhuatanga horahanga mata. I kite rātou ko ngā tikanga tuku iho, pērā i ngā tukanga sol-gel me te hanga hydrothermal, he maha ngā wā ka hua ake ngā rauemi kāore i eke ki ngā paerewa teitei e hiahiatia ana mō ngā tono hou. Nā tēnei herenga i arai te auahatanga me te whanaketanga i roto i ētahi ahumahi hangarau teitei.
Heoi, kua tīmata ngā whanaketanga hou ki te aro atu ki ēnei wero. Nā te mahi rangahau tahi i uru mai ai ngā kaipūtaiao mai i ētahi whare wānanga matua kua hua ake te whanaketanga o tētahi tikanga hanga hou e whakakotahi ana i ngā tikanga matatau hei whakaputa i te α-Al2O3 tino parakore me te whakapai ake i ngā horahanga mata. Ka whakamahia e tēnei huarahi hou te whakakotahitanga o te hanga āwhina-ngaruiti me ngā tukanga whakapūkara whakahaere, e āhei ai te whakahaere pai ake i ngā āhuatanga o te rauemi.
I kōrero ngā kairangahau kāore i te mea i tutuki noa i tā rātou tikanga ngā taumata parakore teitei, engari i hua ake hoki he α-Al2O3 me ngā horahanga mata i nui atu i ērā i kōrerotia i roto i ngā tuhinga o mua. Kei tēnei putanga hou te kaha ki te whakatuwhera i ngā huarahi hou mō te whakamahinga o te α-Al2O3 i roto i ngā tono maha, inā koa i roto i te rāngai hikohiko, kei te piki haere tonu te hiahia mō ngā rauemi mahi-teitei.
Haunga ōna whakamahinga i roto i ngā hikohiko, he mea nui anō hoki te α-Al2O3 tino parakore i roto i te hanga uku matatau, e whakamahia ana i roto i ngā momo ahumahi, tae atu ki te rererangi, te motuka, me te hauora. Ko te kaha ki te whakaputa α-Al2O3 me ngā āhuatanga whakarei ake ka arahi pea ki te whanaketanga o ngā rauemi hou he mama ake, he kaha ake, he ātete ake ki te kakahu me te waikura.
Ko ngā pānga o tēnei rangahau kei tua atu i te hanga rauemi anake. Ko te kaha ki te hanga i te α-Al2O3 tino parakore me te whakapai ake i ngā horahanga mata ka arahi pea ki ngā whanaketanga i roto i te whakatere me ngā tono taiao. Hei tauira, he maha ngā wā ka whakamahia te α-Al2O3 hei tautoko whakatere i roto i ngā tauhohenga matū, ā, mā te whakarei ake i ōna āhuatanga ka taea te whakapai ake i te whai huatanga me te whai huatanga o ngā tukanga whakatere.
Heoi anō, mā te tikanga hanga hou ka taea te whakatakoto huarahi mō ētahi atu rangahau mō ētahi atu wāhanga o te waikura konumohe me ō rātou whakamahinga pea. I a ngā kairangahau e haere tonu ana ki te tūhura i ngā āhuatanga me ngā whanonga o ēnei rauemi, kei te piki haere te hiahia ki te whakamahi i a rātou i roto i te rokiroki pūngao, te whakaora taiao, tae noa ki te whakawhanaketanga o ngā pākahiko o te whakatupuranga e whai ake nei.
Kua whakaputaina ngā kitenga o tēnei rangahau hou ki roto i tētahi hautaka pūtaiao rauemi matua, ā, kua arohia e ngā porowhita mātauranga me ngā porowhita ahumahi. Kua whakanuia e ngā tohunga o te mara te mahi hei taahiraa nui ki mua i te wikitoria i ngā herenga i tautuhia e Amrute me ētahi atu, ā, kua whakapuaki i te tumanako mō te heke mai o te hanga α-Al2O3.
I te mea kei te piki haere tonu te hiahia mō ngā rauemi mahi-teitei, he mea nui te kaha ki te whakaputa i te α-Al2O3 tino parakore me ngā āhuatanga whakarei ake. Ehara i te mea ka aro noa tēnei putanga hou ki ngā wero i whakamāramahia i roto i ngā rangahau o mua, engari ka whakatakoto hoki i te huarahi mō ētahi atu auahatanga i roto i te pūtaiao rauemi. He mea nui te mahi tahi a ngā kairangahau me ngā kaipupuri pānga o te umanga ki te whakamaori i ēnei kitenga ki ngā tono mahi ka whai hua ki te whānuitanga o ngā rāngai.
Hei whakamutunga, ko ngā whanaketanga hou o te hanga o te α-Al2O3 tino parakore he tohu nui i roto i te pūtaiao rauemi. Mā te wikitoria i ngā wero i kitea i roto i ngā rangahau o mua, kua whakatuwherahia e ngā kairangahau ngā huarahi hou mō te whakamahinga o tēnei rauemi maha-whakamahinga i roto i ngā tono hangarau teitei. I te whanaketanga tonu o te mara, e mārama ana he nui te tumanako mō te auahatanga me te whanaketanga puta noa i ngā ahumahi maha mō te heke mai o te α-Al2O3 me ōna hua.
Wā tuku: Hakihea-26-2024
