Zirconia ceramicszimakhala zoyera, zachikasu kapena zotuwira pamene zili ndi zonyansa, ndipo nthawi zambiri zimakhala ndi HfO2, zomwe sizovuta kuzilekanitsa. Pali magawo atatu a kristalo a ZrO2 yoyera pansi pa kukakamizidwa kwabwinobwino.
■Kutentha kochepa kwa monoclinic (m-ZrO2)■Kutentha kwapakati pa tetragonal (t-ZrO2)■Kutentha kwakukulu kwa cubic (c-ZrO2)
Mitundu itatu ya kristalo yomwe ili pamwambapa imapezeka m'matenthedwe osiyanasiyana, ndipo pali maubwenzi awa:
Makhalidwe a zirconia ceramics
High-melting-point
Zirconia kusungunuka mfundo ndi: 2715 ℃, angagwiritsidwe ntchito ngati mkulu kutentha zinthu refractory
High kuuma, zabwino kuvala kukana
Malinga ndi kuuma kwa Mohs: safiro >Zirconia ceramics> Galasi la Corning > Aluminium magnesium alloy > Tempered glass > polycarbonate
Mphamvu zazikulu ndi kulimba
Mphamvu ya zirconia imatha kufika: 1500MPa
Low matenthedwe madutsidwe ndi coefficient wa kukulitsa
Pakati pa zida zodziwika bwino za ceramic, kutentha kwake ndikotsika kwambiri (1.6-2.03W/(mk)), ndipo coefficient of thermal expansion ili pafupi ndi chitsulo.
Kuchita bwino kwamagetsi
Kukhazikika kwa dielectric kwa zirconia ndi nthawi 3 kuposa safiro, ndipo chizindikirocho chimakhala chovuta kwambiri.
Kugwiritsa ntchito zirconia ceramics
Zirconia ceramicsamagwiritsidwa ntchito kwambiri pamagetsi a 3C, kulumikizana kwa kuwala, kuvala kwanzeru, zamankhwala, zodzikongoletsera, moyo watsiku ndi tsiku, zida zokanira ndi zina.
Zirconia ceramic product kukonzekera tekinoloje
Sintering ndi njira yofunika kwambiri pokonzekerazirconia ceramics, khalidwe la sintering lidzakhudza mwachindunji kukonza ceramic, kutentha kokha kwa sintering kumasinthidwa bwino, thupi lake la mluza lidzakhala langwiro. Pressureless sintering ndiyo njira yomwe imagwiritsidwa ntchito kwambiri sintering.
Chifukwa zinthu zoyera za ceramic nthawi zina zimakhala zovuta kuziyika, pansi pazimene zimagwirira ntchito, zowonjezera zina za sintering nthawi zambiri zimayambitsidwa kuti zikhale zosungunuka pang'ono za yankho lolimba, gawo la galasi kapena gawo lina lamadzimadzi, kulimbikitsa kukonzanso kwa particles ndi viscous flow. , kuti apeze mankhwala wandiweyani, komanso kuchepetsa kutentha sintering.
Kuchepetsa kukula kwa ufa momwe mungathere ndi chimodzi mwazinthu zofunika kwambiri zolimbikitsira sintering. Chifukwa ufa wonyezimira, mphamvu yapamwamba ya pamwamba, sintering imakhala yosavuta. Kwa zida za ceramic ndi zinthu zomwe zimafunikira magwiridwe antchito wamba, sintering yopanda kukakamiza ndiyo njira yabwino kwambiri komanso yotsika mtengo.
Nthawi yotumiza: Jul-24-2023