ZTA (Zirconia Toughened Alumina) cov phaj ceramic roj hmab vulcanized yog cov khoom sib xyaw ua ke uas tiv taus kev hnav tshwj xeeb tsim los rau cov xwm txheej kev sib txhuam hnyav. Cov khoom no sib xyaw ua ke ZTA ceramics (feem ntau yog tsim los ntawm 75% -80% Al₂O₃ thiab 20% -25% ZrO₂) nrog cov roj hmab ntuj uas muaj zog elasticity thiab lub phaj hlau tom qab los ntawm cov txheej txheem vulcanization siab heev, muaj cov ntsia hlau countersunk ua ntej rau kev teeb tsa yooj yim. Lub tswv yim tsim qauv tseem ceeb siv cov khoom ceramics uas tiv taus kev hnav siab kom tiv taus kev sib txhuam ntawm cov khoom thaum cov txheej roj hmab nqus cov zog cuam tshuam, ua tiav qhov sib koom ua ke ntawm kev tiv taus kev hnav thiab kev cuam tshuam.
Vim yog lub tshuab ua kom tawv ntawm zirconia, ZTA muaj zog tawg thiab tiv taus hnav ntau dua li cov alumina ceramics ib txwm muaj. Kev tshawb fawb qhia tau tias ZTA composites uas muaj 20% -25% zirconia ua tau zoo tshaj plaws nyob rau hauv cov xwm txheej hnyav. Cov lus qhia tshwj xeeb suav nrog: qhov ceev ntawm qhov loj ≥4.1-4.3 g / cm³, Rockwell hardness (HRA) ≥90, qhov tawv tawg (KIC) ≥3.70 MPa · m1 / 2, thiab lub zog flexural >350 MPa. Hauv kev sim hnav khaub ncaws qhuav, qhov nrawm hnav tshwj xeeb ntawm ZTA composites tuaj yeem qis li 10⁻⁹ mm³ / (N · m), ua tau zoo dua li ib theem alumina lossis zirconia ceramics.
Cov txheej txheem tsim khoom suav nrog kev tswj hwm kub vulcanization kom ntseeg tau tias muaj zog sib txuas ntawm cov ceramic-roj hmab. Raws li cov qauv kev lag luam, lub zog sib txuas ntawm ceramic thiab roj hmab yuav tsum tshaj 3.5 MPa, nrog rau txheej roj hmab nws tus kheej qhia txog lub zog tensile ntawm 12-15 MPa thiab elongation thaum tawg ntau dua 250%-400%. Cov qauv sib xyaw vulcanized zoo tiv thaiv cov vuas ceramic kom tsis txhob tawm hauv qab kev cuam tshuam, thaum cov roj hmab deformation disperses kev ntxhov siab concentrated, tiv thaiv cov txheej ceramic los ntawm brittle fracture. Lub phaj hlau backing ua kom cov qauv ruaj khov thaum mounted rau ntawm cov khoom siv plhaub.
ZTA ceramic roj hmab vulcanized phajfeem ntau yog siv rau hauv cov chutes hloov pauv, hoppers, thiab cov thoob khib nyiab ntawm cov khoom siv loj uas muaj ob qho kev cuam tshuam thiab kev puas tsuaj. Piv rau cov alumina ceramic liners ntshiab, ZTA muaj ntau dua 2.5 npaug ntawm kev pabcuam lub neej nyob rau hauv cov xwm txheej cuam tshuam-kev puas tsuaj, thaum nws tus nqi tseem qis dua li cov zirconia ceramics ntshiab, muab kev siv nyiaj zoo heev. Rau cov ntawv thov tuav cov khoom loj, qhov siab poob siab, lossis qhov ceev ntws siab, ZTA roj hmab vulcanized phaj sawv cev rau ib qho ntawm cov kev daws teeb meem tiv thaiv kev hnav zoo tshaj plaws muaj.
Lub sijhawm tshaj tawm: Lub Ob Hlis-24-2026