Quartz iav raj yuav tsis cuam tshuam los ntawm hluav taws xob
Lub tshav kub tsis kam ntawm quartz raj yog siab heev, qhov kub ntawm kev siv tsis tu ncua yog 1100 ~ 1200 degrees Celsius, thiab qhov kub ntawm kev siv lub sij hawm luv luv tuaj yeem ncav cuag 1400 degrees Celsius. Quartz iav feem ntau yog siv hauv cov khoom siv hauv chav kuaj thiab cov khoom siv kho kom zoo rau cov khoom tshwj xeeb high-purity. Vim hais tias ntawm nws cov spectral siab kis tau tus mob, nws yuav tsis puas los ntawm hluav taws xob (lwm cov iav yuav tsaus tom qab irradiated los ntawm hluav taws xob), yog li nws kuj yog ib tug zoo tagnrho iav rau spacecraft, cua qhov qhov rais qhov rais thiab spectrophotometer optical systems.
Silica ib leeg-khoom tshwj xeeb kev lag luam iav. Cov iav no muaj qhov nyuaj txog li xya ntawm Mohs nplai, muaj qhov kub thiab txias tsis kam, tsis tshua muaj kev nthuav dav coefficient, thermal shock resistance, zoo tshuaj stability thiab hluav taws xob rwb thaiv tsev zog, thiab muaj peev xwm kis tau ultraviolet thiab infrared rays. Tsuas yog hydrofluoric acid thiab kub phosphoric acid, nws muaj cov kua qaub zoo rau cov kua qaub. Raws li pob tshab, nws muab faib ua ob pawg: pob tshab thiab opaque. Raws li purity, nws muab faib ua peb pawg: siab purity, zoo tib yam thiab doped. Siv siv lead ua, silica, silicide ua raw khoom, nws yog tsim los ntawm kub melting los yog tshuaj vapor deposition. Txoj kev melting muaj xws li hluav taws xob melting txoj kev, roj refining txoj kev thiab lwm yam.
