Kodi mungapititse bwanji patsogolo kulimba kwa alumina ceramics?

Pali njira zingapo zazikulu zowonjezerera kulimba kwa alumina ceramics:

1. Kulimbitsa Zirconia: Iyi ndiyo njira yolimba yomwe imagwiritsidwa ntchito kwambiri. Ngati kuchuluka koyenera kwa zirconia (ZrO2) kwawonjezeredwa ku alumina, kulimba kwake kumatha kuwongoleredwa kwambiri. Mphamvu yolimba imachokera makamaka ku njira monga kukonzanso kwa matrix ya alumina grain, kulimbitsa kwa zirconia mu gawo, kulimbitsa kwa microcrack, ndi kulamulira kwa crack ndi bifurcation.

2. Ndevu ndi kulimbitsa ulusi: Ndevu ndi makristasi amodzi a ceramic okhala ndi chiŵerengero chapamwamba, ndipo kutalika kwa ulusi kumakhala kotalika kangapo kuposa ndevu za ceramic. Zonse zitha kuwonjezeredwa ku alumina ceramics ngati zolimbitsa. Kuonjezera ndevu kapena ulusi kumatha kuwonjezera pamwamba pa fracture, ndiko kuti, kuwonjezera njira yofalitsira ming'alu. Pamene ming'aluyo ikufika ku ulusi (ndevu), kukoka, kuchotsa, ndi kusweka kwa ulusi (ndevu) kumachitika, motero kumawononga mphamvu yosweka ndikuwonjezera kulimba kwa ceramic.

3. Kulimbitsa tinthu tating'onoting'ono: Kuwonjezera tinthu tating'onoting'ono tokhala ndi modulus yolimba kwambiri (monga SiC, TiC, TiN, ndi zina zotero) ku zinthu za alumina kungayambitse ming'alu kuti ipatuke ndikugawanika pamene zinthuzo zasweka, zomwe zimawononga mphamvu yosweka, motero zimapangitsa kuti zikhale zolimba. Ngakhale kuti mphamvu yolimbitsa tinthu tating'onoting'ono si yabwino ngati ya ndevu ndi ulusi, kusakaniza kofanana kwa zinthu zopangira ndi kukhuthala kwa sintering kumakhala kosavuta komanso kosavuta kuposa zinthu zopangidwa ndi ulusi ndi ndevu.

4. Kudzilimbitsa kwa Alumina: Ma Ceramics opangidwa kuchokera ku ufa wa alumina wa nanoscale amasonyeza kulimba kwambiri pa kutentha kochepa. Nanomaterial iyi imatha kusintha mawonekedwe ndi mawonekedwe a tirigu wa ceramic, motero imawonjezera kulimba kwake.

5. Yambitsani gawo lachiwiri: Yambitsani gawo lachiwiri mu matrix ya alumina ceramics kuti likwaniritse malire a alumina, zomwe zimathandiza kuletsa kufalikira kwa ming'alu ndikuwonjezera kulimba kwa fractures ya ceramics. Mwachitsanzo, alumina yolimba ya zirconia imagwiritsa ntchito njira iyi.

6. Kuwonjezera makhiristo a mbewu za alumina: Kuwonjezera makhiristo a mbewu za alumina kungathandize kukula kwa anisotropic kwa timbewu ta kristalo ndikupanga timbewu ta kristalo topyapyala kapena topyapyala, monga ndevu, zomwe zingayambitse kusweka kwa ming'alu, kutulutsa timbewu, ndi kulimbitsa kulumikizana kwa zinthu zadothi.

Njirazi zitha kugwiritsidwa ntchito zokha kapena kuphatikiza kuti ziwongolere kulimba kwa alumina ceramics. Kusankha kwapadera kumadalira magwiridwe antchito, mtengo wake, ndi momwe amagwiritsidwira ntchito.ZTA zomangira za alumina zolimbakuchokera kwa wopanga Chemshun Ceramics akhoza kukwaniritsa bwino zosowa zanu zapamwamba za kulimba