Ngā Uku Ārai-Pahū 99% Alumina: Ngā Āhuatanga, Te Hanganga, me Ngā Whakamahinga

Te99% te uku ā-aumina ātete-poroHe uku hangarau mahi-teitei tēnei, ko te α-alumina (α-Al2O₃) te wāhanga tioata tuatahi, ā, neke atu i te 98% te nui o te alumina. He tūranga nui tōna i roto i te tiakitanga o ngā pukupuku whaiaro me ngā pukupuku waka nā tōna pakeke teitei, tōna matotoru taurite, tōna ātete pai ki te kakahu, me tōna ōwehenga utu-mahi pai. Ko tōna tikanga tiaki e whakawhirinaki ana ki tōna pakeke teitei me te modulus ki te whakakorikori me te wawahi i te pere e haere mai ana, me te mimiti me te whakamarara i te nuinga o te kaha nekeneke o te pere mā roto i tana ake tukanga pakaru. Ko te kaha e toe ana ka mimitihia e te rauemi hiato tautoko (hei tauira, te polyethylene taumaha-ira-teitei, te papanga kotahi-aronga rānei). Ko ngā āhuatanga ā-tinana matua ko te matotoru papatipu kāore i raro iho i te 3.9 g/cm³, te pakeke Mohs o te 9, te kaha piko tae atu ki te 580 MPa, me te mimiti wai iti (<0.006%) me te pumau wera pai.

Ka tīmata te tukanga hanga mā te whiriwhiri i ngā paura alumina tino pai, tino parakore, ko te nuinga he iti iho i te maikorona te rahi (D50 tata ki te 0.35~1.4 μm). Ko ngā tikanga hanga matua ko te pēhi maroke me te pēhi isostatic, ā, muri iho ko te whakakīkī mā te sintering ā-hau, te pēhi wera rānei. Hei whakakore i te pakarukaru ā-roto o te uku me te whakapai ake i te ātete maha-pā, ka arotahi ngā rangahau matua ki ngā hangarau whakapakari, pērā i te whakauru i ngā ūkui silicon carbide, te zirconia rānei hei hanga uku hiato matrix alumina. Ka taea e ēnei rauemi hiato te aukati i te horapa o te kapiti i te taumata hanganga moroiti, ka whakanui ake i te pakari, te ātete pānga, me te mahi porotiti whānui.

I roto i ngā mahi whaihua, he maha ngā wā ka hangaia ngā uku alumina 99% hei hanga i ngā taera āhua rite (tapawhā, tapawhā rite, hekona), hei hanga rānei i ngā wahi āhua motuhake piko hei hanga i ngā pereti whakauru porowhita ergonomic. Kua paahitia e ngā pereti pukupuku mārō i hangaia mai i tēnei rauemi ngā whakamātautau porowhita ngaio pērā i te NIJ Standard-0101.06 Taumata III me te IV. Kua whakaatuhia e ngā rangahau whakamātautau ko te tāpiri i te here ki ngā pereti uku ka taea te whakapai ake i tō rātou ātete ki te werohanga. Nā tōna mahi ātete matā tino pai, te taumaha iti me te utu whakataetae, kua noho te uku ātete matā 99% alumina hei rauemi matua i roto i te mākete pereti ātete matā uku.