I-Alpha-alumina inezinto zamakhemikhali ezizinzile, ukumelana nokugqwala, ubulukhuni obuphezulu, izindawo ezinhle zokuvimba, indawo encibilikayo ephezulu kanye nokuqina okuphezulu, futhi isetshenziswa emikhakheni ehlukene.
Ukusetshenziswa kwe-α-alumina powder kuma-ceramics
I-Microcrystalline alumina ceramics iwuhlobo olusha lwe-ceramic material ene-uniform kanye nesakhiwo esiminyene kanye ne-nano noma i-sub-micron usayizi wokusanhlamvu. Inezinzuzo zamandla aphezulu emishini, ukumelana nokugqoka, ukumelana nokugqwala, ukumelana ne-oxidation, i-coefficient yokwandisa okulungiswayo kanye nokuzinza okuhle kokushisa. Isici sayo esiyinhloko ukuthi i-crystal eyinhloko incane. Ngakho-ke, isimo sobuchwepheshe esibaluleke kakhulu sokulungiswa kwe-microcrystalline alumina ceramics ukulungisa i-α-Al2O3 powder nge-crystal encane yasekuqaleni nomsebenzi ophezulu we-sintering. Le powder α-Al2O3 ingaba umzimba ominyene we-ceramic ekushiseni okuphansi kwe-sintering.
Ukusetshenziswa kwe-α-alumina powder ezintweni eziphikisayo
I-α-Al2O3 powder ihlukile ezintweni eziphikisayo ngokusho kwesicelo, futhi izidingo ze-powder nazo zihlukile. Isibonelo, uma ufuna ukusheshisa ukuminyana kwezinto eziphikisayo, i-nano-alumina iyisinqumo esingcono kakhulu; uma ufuna ukulungisa ama-refractories anomumo, udinga i-α-Al2O3 powder enezinhlamvu eziqinile, ukuncipha okuncane, nokumelana nokuguquguquka okuqinile. I-Flake noma amakristalu amise okwepuleti angcono; kodwa uma kuyi-amorphous refractory material, i-α-Al2O3 iyadingeka ukuthi ibe noketshezi oluhle, umsebenzi we-sintering ophezulu, futhi ukusatshalaliswa kosayizi wezinhlayiyana kudinga ukuminyana kwenqwaba enkulu, futhi amakristalu ahlanjululwe kahle angcono.
Ukusetshenziswa kwe-α-alumina powder ezintweni zokupholisha
Izicelo zokupholisha ezihlukene zidinga izinto ezahlukene. Imikhiqizo yokupholishwa okungalungile nokucwebezelisa okuphakathi idinga amandla okusika aqinile nobulukhuni obuphezulu, ngakho-ke i-microstructure yawo namakristalu kudingeka ukuba amaholoholo; I-α-alumina powder ukuze icwebezeliswe kahle idinga ukuthi umkhiqizo ophucuziwe ube nobuhwaqane obuphansi kanye nokucwebezela okuphezulu Ngakho-ke, ikristalu eyinhloko ye-α-Al2O3 encane, ingcono.
Ukusetshenziswa kwe-α-alumina powder ezintweni zokugcwalisa
Endabeni yokugcwalisa, ukuze kuqinisekiswe ukuthi kuhlangana kahle nezinto eziphilayo futhi kuncishiswe umthelela ku-viscosity yesistimu, imfuneko eyisisekelo kakhulu ye-α-Al2O3 ukuthi i-fluidity ilungile ngokwanele, mhlawumbe iyindilinga, ngoba ukuphakama kwe-sphericity, indawo engaphezulu. Amandla amancane, ngcono ukugcwala kwamanzi kwebhola; okwesibili, i-α-Al2O3 powder enokuthuthukiswa okuphelele kwekristalu, ukuhlanzeka kwamakhemikhali aphezulu kanye namandla adonsela phansi eqiniso aphezulu kunokusebenza okungcono okushisayo kanye nomphumela ongcono uma isetshenziselwa izinto zokuvikela kanye ne-thermal conductive.
Ukusetshenziswa kwe-α-alumina powder ku-capacitor corundum material
Embonini, impushana ehlanzekile ye-α-alumina ivamise ukucwiliswa esithandweni sikagesi esisezingeni eliphezulu ukuze kwenziwe i-corundum yokwenziwa, eyaziwa nangokuthi i-fused corundum. Le nto inezici zokuqina okuphezulu, imiphetho ecacile namakhona, futhi i-microstructure ingcono kakhulu eduze ne-spherical. Enkambweni yokugaya ngesivinini esikhulu, izinhlamvu ezihlabayo zinamandla okusika aqinile, futhi izinhlamvu ezihlabayo akulula ukuphuka.ngalokho kwandisa impilo yayo yesevisi.