Zirconia ceramicsichena, yero kana grey kana iine tsvina, uye kazhinji ine HfO2, iyo isiri nyore kupatsanura.Kune matatu makristasi mamiriro eZrO2 yakachena pasi pekumanikidzwa kwakajairwa.
■Tembiricha yakaderera monoclinic (m-ZrO2)■Tembiricha yepakati tetragonal (t-ZrO2)■Yepamusoro tembiricha cubic (c-ZrO2)
Aya matatu ari pamusoro emhando dzekristaro aripo mumhando dzakasiyana dzetembiricha, uye kune zvinotevera hukama hwekuchinjana:
Hunhu hwe zirconia ceramics
High-melting-point
Zirconia yakanyunguduka nzvimbo ndeye: 2715 ℃, inogona kushandiswa seyakakwira tembiricha refractory zvinhu.
High kuoma, zvakanaka kupfeka kuramba
Maererano neMohs kuoma: safiro >Zirconia ceramics> Corning Glass > Aluminium magnesium alloy > Tempered glass > polycarbonate
High simba uye kuoma
Simba re zirconia rinogona kusvika: 1500MPa
Low thermal conductivity uye coefficient yekuwedzera
Pakati pezvakajairwa zveceramic zvinhu, iyo yekupisa kwayo conductivity ndiyo yakaderera (1.6-2.03W/(mk)), uye iyo coefficient yekuwedzera kwemafuta iri pedyo neiyo yesimbi.
Kuita kwakanaka kwemagetsi
Dielectric constant ye zirconia is 3 times that of safire, uye chiratidzo chinonyanya kuoma.
Kushandiswa kwe zirconia ceramics
Zirconia ceramicsanoshandiswa zvakanyanya mu3C zvemagetsi, optical kutaurirana, smart kupfeka, biomedical, zvishongo, hupenyu hwezuva nezuva, refractory zvinhu uye mamwe minda.
Zirconia ceramic chigadzirwa chekugadzira tekinoroji
Sintering inzira yakakosha mukugadzirira kwezirconia ceramics, mhando ye sintering ichakanganisa zvakananga kugadzirisa kweceramic, chete sintering tembiricha inogadziriswa zvakanaka, muviri wayo embryo uchave wakakwana.Pressureless sintering ndiyo inonyanya kushandiswa sintering nzira.
Nekuti yakachena ceramic zvinhu dzimwe nguva zvakaoma kunyura, pasi pemamiriro ekuita, mamwe ekuwedzera ekuwedzera anowanzo kuunzwa kuti aite chikamu chakaderera chekunyungudika chemhinduro yakasimba, chikamu chegirazi kana chimwe chikamu chemvura, kukurudzira kurongekazve kwezvikamu uye kuyerera kwe viscous. , kuitira kuti uwane chigadzirwa chakaoma, asiwo kuderedza sintering tembiricha.
Kuderedza saizi yehupfu zvakanyanya sezvinobvira zvakare imwe yematanho akakosha ekusimudzira sintering.Nokuti iyo yakatsetseka hupfu, iyo yakakwirira pamusoro pesimba, iyo inova nyore sintering.Zveceramic zvinhu uye zvigadzirwa zvine zvakajairika kuita zvinodiwa, kwete-kumanikidza sintering ndiyo yakanyanya nyore uye ine hupfumi sintering nzira.
Nguva yekutumira: Jul-24-2023