High-temperature refractory ceramic khoom 3YSZ, los yog qhov peb tuaj yeem hu ua tetragonal zirconia polycrystal (TZP), yog ua los ntawm zirconium oxide uas tau ruaj khov nrog 3% mol yttrium oxide.

Cov qib zirconia no muaj cov nplej tsawg tshaj plaws thiab qhov nyuaj tshaj plaws ntawm chav tsev kub vim lawv yuav luag tag nrho cov tetragonal. Thiab nws qhov me me (sub-micron) grain loj ua rau nws muaj peev xwm ua kom tiav qhov zoo tshaj plaws tiav thiab tuav lub ntse ntse.

Zirconia feem ntau yog siv los ua tus stabilizer nrog MgO, CaO, lossis Yttria los txhawb kev hloov pauv. Hloov ntawm thawj qhov tso tawm uas tsim cov qauv tetragonal tag nrho, qhov no tsim cov qauv siv lead ua ib nrab uas yog metastable thaum txias. Tetragonal precipitates muaj kev ntxhov siab-induced theem hloov nyob ze rau qhov kev nce qib zuj zus thaum muaj kev cuam tshuam. Cov txheej txheem no ua rau cov qauv nthuav dav thaum nqus lub zog loj, uas suav nrog cov khoom siv no zoo kawg nkaus toughness. Qhov kub thiab txias kuj ua rau muaj kev hloov pauv loj, uas muaj qhov cuam tshuam tsis zoo rau lub zog thiab ua rau 3-7% kev nthuav dav. Los ntawm kev ntxiv cov lus hais saum toj no, tus nqi ntawm tetragonal tuaj yeem tswj hwm kom muaj kev sib npaug ntawm qhov hnyav thiab lub zog poob.

Nyob rau hauv chav tsev kub, tetragonal zirconia stabilized nrog 3 mol% Y2O3 (Y-TZP) qhia qhov ua tau zoo tshaj plaws nyob rau hauv cov nqe lus ntawm toughness, dabtsi yog khoov zog. Nws kuj qhia tau hais tias cov khoom zoo li ionic conductivity, thermal conductivity tsawg, toughening tom qab transformation, thiab cov duab nco los. Tetragonal zirconia ua rau nws muaj peev xwm los tsim cov khoom siv ceramic nrog zoo corrosion kuj, superior hnav tsis kam, thiab zoo heev nto tiav.

Cov yam ntxwv no ua rau nws siv tau dav hauv thaj chaw xws li biomedical teb rau kev hloov pauv hauv lub duav thiab kho hniav, thiab hauv thaj chaw nuclear ua cov txheej txheem thermal barrier hauv cov roj pas nrig.