Mixed refractory fiber khoom

Mixed refractory fiber khoom yog hais txog refractory fiber ntau cov khoom ua los ntawm crystalline thiab amorphous aluminium silicate fibers ua raw khoom. Alumina fiber ntau thiab mullite fiber ntau kim, thaum tus nqi ntawm kev siv cov fibers sib xyaw tuaj yeem raug txo kom tsawg. Yuav siv tau rau qhov kub kub hauv ob sab phlu ntawm 1200-1400 degree .
Thaum siv cov khoom sib xyaw fiber ntau, cov alumina fibers poob qis, tab sis nws tsis muaj kev cuam tshuam loj rau tag nrho cov duab geometric ntawm cov qauv hauv ob sab phlu. Feem ntau, ntawm qhov kub siab tshaj 1000 degree, alumina fibers undergo crystallization, ua rau nag lossis daus ntawm mullite thiab dawb silica. Cov tshuaj tiv thaiv ntawm dawb silica thiab nruab nrab aluminium hauv alumina fibers tsim mullite kev sib raug zoo ntawm fibers, uas tswj tag nrho cov qauv lub zog ntawm lub fiber hauv ob sab phlu thiab suppresses fiber ntau shrinkage ntawm kub kub.