Dab Tsi Yog Qhov Cuam Tshuam Cuam Tshuam Kev Cuam Tshuam Cov Av Cuam Tshuam

1. Qhov sib txawv thiab qhov ntawm qhov tseem ceeb crystalline theem thiab qhov hloov ntawm qhov theem crystalline theem lossis ntawm lub ntsiab crystalline theem thiab theem crystalline theem;

2. Qhov xwm txheej ntawm qhov loj thiab qhov sib piv ntawm cov lej ntawm qhov sib npaug mus rau lub ntsiab crystalline theem lossis tib theem pib thiab theem nrab crystalline theem thiab cov diffusion morphology.

3. Kev cog lus ntawm me me thiab cov ntxeem tau ntawm cov hlau thim rov qab. Thaum lub ntsej muag refractory cib yog tag nrho tsim ntawm ib-theem polycrystals, qhov tsis kam ntawm lub pob hluav taws xob refractory cib sib raug rau cov teeb meem ploj mus ntawm cov siv lead ua theem. Piv txwv li, siab-purity refractory refractory cib muaj qhov siab melting point crystals Lub refractoriness ntawm high-purity sintered corundum bricks yog siab heev. Thaum pib ua kom kub ntawm qhov siab-purity sintered corundum cib tuaj yeem siab npaum li 1870 70.

Thaum lub siab melting point muaju nyob rau hauv lub refractory cib sib ntsib sib los yog sib txuam ua ib qho qauv hauv lub network ruaj khov, nws qhov refractoriness yuav tsum siab dua. Ntawm qhov tsis sib xws, thaum lub siab melting point siv lead ua theem yog kho siab, lub refractoriness ntawm refractory cib yuav tsum qis dua. Cov theem muaj pes tsawg leeg ntawm cov thwv cib feem ntau yog nplai muaju thiab muaju ntau qhov tsawg. Cov nplai iav hauv cov av ci los ua lub network qauv ntawm cov ntxaib sib hloov sib txuam sib luag, yog li qhov refractoriness feem ntau yog qhov siab heev, thiab qhov muag kub thaum pib yog feem ntau saum 1650 ℃. Qhov ntsuas kub zoo npaum li 1680 ℃, uas yog siab tshaj li qhov chaw yaj ntawm cov nplaim hluav taws (1670 ℃). Nws tsuas zoo li cib magnesia dog dig. Lub ntsiab lus melting ntawm lub ntsiab siv lead ua theem periclase ntau npaum li 2800 ℃, tab sis vim tias lub ntsiab siv lead ua theem yog qhov kho siab, qhov pib kub ntawm load softening tsuas yog 1550. ℃ nce thiab nqis.