Dab tsi yog qhov compressive zog ntawm mullite?
Cov khoom no tso cai rau kev siv dav dav hauv thaj chaw ntawm cov rwb thaiv tsev kub, pom, thiab cov cab kuj ceramic. Cov txheej txheem ib txwm npaj rau kev npaj ntxeem tau mullite ceramics tsom feem ntau ntawm kev nce porosity thiab kho qhov pore qauv, txhawm rau txhim kho cov khoom sib xws ntawm kev txuag hluav taws xob, los ntawm kev ntxiv cov pore-forming agents thiab / lossis huab cua / kua lim siv cov qauv polymer.
Txawm li cas los xij, siab porosity feem ntau ua rau qis dua txhua yam zog; Yog li ntawd, porous mullite ceramics tau los ntawm cov kev cai ib txwm muaj feem ntau muaj zog compressive tsis zoo (tsawg dua 10 lossis txawm tias 1 MPa nrog 90% porosity). Qhov no txwv lawv daim ntawv thov nyob rau hauv cov ntaub ntawv rwb thaiv tsev-refractory thiab cuam tshuam rau cov qauv kev ruaj ntseg, txo cov kev pab cuam lub neej thiab nce cov neeg siv cov nqi. Ntxiv mus, porous mullite ceramics feem ntau yog siv los ua thermal tiv thaiv cov ntaub ntawv rau lub dav hlau fuselage thiab high-temperature flue gas lim ntaub ntawv. Cov kev ua haujlwm hnyav nce qhov yuav tsum tau ua rau cov khoom siv porosity thiab txhua yam muaj zog, uas yog, cov khoom ntxeem tau nrog compressive zog ntau dua 20 MPa. Tsim ib txoj kev tshiab rau kev sib txuas ntawm cov ntxeem tau mullite ceramics nrog cov porosity siab thiab lub zog siv tshuab tau dhau los ua qhov tseem ceeb hauv xyoo tas los no.
