Dab tsi yog pawg thiab kev ua haujlwm ntawm quartz iav raj
Quartz iav raj thiab siv lead ua muaj tib yam tshuaj muaj pes tsawg leeg, tab sis cov qauv sib txawv heev. Ib qho yog nyob rau hauv lub xeev iav thiab lwm qhov yog nyob rau hauv lub xeev crystalline. Crystal tsis tuaj yeem tiv taus qhov kub siab thermal shock, nws yuav tawg thiab hloov mus rau lwm yam siv lead ua metamorphosis thaum raug kub, thaum quartz iav tuaj yeem tiv taus qhov kub thiab txias. Kev tsim cov pob tshab quartz iav thiab opaque quartz iav yuav tsum tau kub siab, vim crystalline SiO2 tuaj yeem yaj saum toj 1713 ° C. Muaj ob hom quartz iav, pob tshab thiab opaque quartz iav. Pob tshab thiab opaque quartz iav yog cov khoom siv nyiaj txiag zoo tshaj plaws siv hauv kev lag luam thiab kev tshawb fawb tshawb fawb. Cov khoom siv raw siv hauv nws qhov chaw tsim khoom yog siv lead ua lossis high-purity, ultra-high-purity quartz xuab zeb thiab dawb quartz xuab zeb. Ob leeg ntawm cov khoom siv raw muaj nyob hauv qhov xwm txheej, thiab lawv cov muaj pes tsawg leeg yog tsim los ntawm SiO2 purest.
Kev ua haujlwm ntawm quartz iav yog pob tshab quartz iav, thiab lwm hom quartz iav (opal quartz iav, quartz ceramics, opaque quartz iav, quartz wool, quartz fiber, thiab lwm yam) muaj lawv tus kheej tshwj xeeb cov khoom.
Thermal zog ntawm quartz iav
1. Kub tsis kam
2. Thermal stability
3. Volatile npaum li cas ntawm quartz iav ntawm qhov kub thiab txias
4. Tshwj xeeb kub thiab thermal conductivity
5. Lub crystallization kev ua tau zoo ntawm quartz iav (tseem hu ua devitrification kev ua tau zoo lossis kev ua haujlwm devitrification)
6. Kub kub discoloration ntawm quartz iav
