Ngā Āhuatanga o te Alumina Whakakotahi Ma mō ngā Paninga Ātete
Alumini mā kua hanumi mō ngā paninga ātete-waikura, he teitei te ira rewa, he tino pumau te pāmahana, he kaha te ātete ki te waikura matū, he pakeke me te ātete ki te kakahu, he pai te mahi, me ngā paninga ōrite, matotoru. Kei raro nei ngā āhuatanga matua:
I. Teitei o te Rewa me te Pūmautanga Wera
He teitei te ira rewa o te alumina mā, e pupuri ana i ngā āhuatanga ā-tinana me te matū pumau i raro i ngā pāmahana teitei, me te kore e rewa, e rerekē rānei te āhua. Nā tēnei he rauemi pai mō te whakarei ake i te mahi ātete-wera o ngā paninga, kia mau tonu ai te tu atu ki ngā pāmahana teitei i roto i ngā oumu, ngā oumu whakarewa, me ngā taputapu rite, me te kore e pakaru.
II. Ātete ki te Waikura Matū
He tino ātete te alumina mā ki ngā matū waikura pēnei i te waikawa me te kawakore, ā, kāore e pāngia e te nuinga o ngā matū. I roto i ngā taiao waikura i roto i ngā ahumahi pēnei i te tukatuka matū me te whakarewa,ngā paninga āteteMā te mea kei roto ko te alumina ma kua hanumi ka mau tonu te pumau mō te wā roa, ka roa ake ai te ora o ngā taputapu.
III. Teitei o te Pakari me te Ātete ki te Mau
He rite te pakeke o te alumina mā ki te Mohs, ā, he rite tonu ki te taimana me te silicon carbide, ā, he tino pai te ātete ki te kakahu. Ka ātete ki te pānga me te ūkui mai i ngā wai me ngā matūriki tere-rahi, me te pupuri tonu i te maeneene me te papatahi o te mata i roto i te wā.
IV. Te Mahi Tino Pai o te Taupānga
Alumini mā kua hanumika taea te whakamahi mā te rehu, te paraihe, me ētahi atu tikanga rite. I te wā e whakamahia ana, ka tohatoha ōrite, ka piri pūmau ki te papa hei hanga i tētahi paparanga ātete kikī. Ko tōna parakore teitei me te iti o te poke ka whakaiti i te uaua o te whakamahinga, ka whakarei ake i te whai huatanga, ka whakarite kia ōrite te paninga me te matotoru, ā, ka whakaiti i ngā tūponotanga o te ngatata, te tihore rānei.
V. Paninga ōrite me te matotoru
Ka hangaia e ngā paninga ātete-waikura kei roto ko te alumina ma kua hanumi he paparanga matotoru ōrite i te wā e pania ana, ka whakaitihia te porosity me te whakanui ake i te matotoru me te kaha. Ka whai wāhi tēnei ki te whakapai ake i te mahi paninga whānui, tae atu ki te ātete-waikura, te ātete pānga, me te ātete ki te pakū.
VI. Te Ātete ki te Waikura me te Ātete ki te Ru Wera
He kaha te ātete o te alumina mā ki te waikura, ā, he iti noa te pirau matū i te whakamahinga roa, ka whakaiti i te pakaru o te paninga me te koroheketanga i roto i ngā hau waikura. Hei tāpiri, ka whakarei ake i te ātete ki te ru wera me te ātete ki te horo o te para mā roto i ngā hanganga hiato me ngā momo waikura, ngā mea kore-waikura rānei.
VII. Ngā Mahi Maha me te Whānuitanga o te Whakamahinga
Ehara i te mea he pai anake ngā paninga ātete-wera kei roto ko te alumina hanumi mā mō te tiaki i ngā taputapu ahumahi pāmahana-tiketike engari ka taea hoki te whakarite kia tutuki ai ngā whakaritenga rerekē mā te whakarerekē i te rahi o te matūriki.