Ngā taera uku alumina ātete-mauHe hua uku mahi ēnei i hangaia mai i te waikura konumohe parakore-teitei (Al₂O₃) mā te pēhi me te whakamahana i te pāmahana teitei. Ko te nuinga o te wā ko te 92%, 95%, 99% rānei te nui o te Al₂O₃, me te mātotoru mai i te 3.60 g/cm³ ki te 3.90 g/cm³ me te mimiti wai i raro i te 0.01%. He tino pakeke te rauemi, he pai hoki te pumau matū, he pai mō ngā āhuatanga ahumahi e pā ana ki te pānga, te waku reti, me te waikura.
Ngā tawhā mahi noa: Te pakeke Mohs o te 9, te pakeke Rockwell HRA 85-90, me te ātete kakahu 20-30 ngā wā i te maitai waro noa (te kakahu rōrahi ≤0.05 cm³ mō ia whakamātautau wira rapa onepu maroke ASTM G65). Ka eke te kaha piko ki te 250-350 MPa, te kawe wera tata ki te 25-30 W/(m·K), ā, ko te awhe pāmahana mahi mai i te -50 °C ki te 1200 °C (i runga i te momo motuhake). Mā ēnei raraunga ka whakarite te pono mō te wā roa i raro i ngā āhuatanga kakahu teitei me te pāmahana teitei.
He whānuitia te whakamahinga o te hua hei tiaki i te pakaru o ngā taputapu matua puta noa i ngā ahumahi sima, maitai, hiko, keri, me te waro, pērā i ngā mata whakarōpū, ngā awaawa, ngā tuke paipa, ngā awhiowhio, me ngā arai hopper. Ko ngā tikanga tāutanga ko te here i te kapia epoxy, te whakapūmau, te whakarewa rānei (mā te whakamahi i ngā taera uku kua oti te keri me ngā pereti rapa/maitai). Ko te matotoru paerewa kei waenga i te 5 mm ki te 25 mm; ko ngā rahi taera noa ko te 10 mm×10 mm, 20 mm×20 mm, me te 50 mm×50 mm ngā āhua tapawhā, he ono rānei hei ngāwari ki te tapahi me te tahora i te papaanga.
Mā te whakamahi i ngā taera uku alumina ātete-kakahu ka roa ake te ora o ngā taputapu, ā, ka whakaitihia te wā e kore ai e whakamahia te tiaki. E whakaatu ana ngā raraunga o te mara, i raro i ngā āhuatanga mahi ōrite, ka roa ake te mau o ngā arai uku i te maitai konupora nui, i ngā pereti maitai koranu ātete-kakahu rānei, e 3-8 ngā wā. Kāore he aukume o te hua, ā, he ātete ki te waikura waikawa/kawa (haunga te waikawa hauwaiwai me te kawakawa wera kukū), ā, kāore e poke i ngā rauemi. Me whakatau te kōwhiringa i te nui o te Al₂O₃ me te matotoru o te taera i runga i te koki pānga tuturu, te rahi o te matūriki, me te pāmahana kia tutuki ai te taurite i waenga i te mahi me te utu.
Wā tuku: Paenga-whāwhā-25-2026