Cov khoom siv refractory dawb tabular alumina yog cov khoom siv high-purity alumina. Nws daim ntawv siv lead ua yog hexagonal, uas muaj siab hardness thiab hnav tsis kam, thiab kuj muaj hluav taws kub zoo. Nws lub ntsiab nta yog raws li nram no:
1. High hardness: cov khoom siv tawv heev, thiab nws cov Mohs hardness tuaj yeem ncav cuag 9, thiab nws cov hnav tsis kam yuav luag tsis quav ntsej.
2. Kev kub siab ua haujlwm zoo: kub tsis kam, tuaj yeem tiv taus kev siv lub sijhawm ntev ntawm lub qhov cub kub, tseem tuaj yeem tuav cov tawv tawv hauv qhov kub thiab txias, thiab tsis yooj yim rau deform lossis yaj.
3. Cov tshuaj tiv thaiv zoo heev zoo corrosion kuj thiab tsis corroded los ntawm feem ntau acids, alkalis thiab high-kub dej vapor.
4. Cov khoom siv hluav taws xob zoo: cov khoom siv hluav taws xob zoo heev nrog cov khoom siv hluav taws xob zoo heev, thiab tseem tuaj yeem tuav cov khoom zoo insulating nyob rau hauv qhov kub thiab txias ib puag ncig.
High dimensional stability: siab stability, tsis yooj yim cuam tshuam los ntawm deformation, stretching, compression thiab lwm yam, thiab muaj peev xwm tswj tau nws ruaj khov thiab loj nyob rau hauv ntau yam complex ib puag ncig.
Cov yam ntxwv tseem ceeb ntawm dawb tabular alumina yog:
1. Cov ntsiab lus oxygen siab: Cov ntsiab lus ntawm alumina nyob rau hauv cov xim dawb tabular alumina yog qhov siab, uas tuaj yeem ncav cuag ntau dua 99.5 feem pua, yog li nws muaj kev rwb thaiv tsev zoo thiab corrosion kuj.
2. Hard thiab khoom: dawb tabular alumina muaj siab hardness thiab cov khoom ua tau zoo, tsis yooj yim cuam tshuam los ntawm kev hnav thiab kev cuam tshuam, thiab muaj kev hnav siab hauv ntau qhov chaw ib puag ncig.
3. High dimensional stability: Dawb tabular alumina muaj qhov siab ruaj khov, tsis yooj yim cuam tshuam los ntawm deformation, ncab, compression thiab lwm yam, thiab tuaj yeem tswj nws cov duab ruaj khov thiab loj hauv ntau qhov chaw ib puag ncig.
4. Kev ua haujlwm zoo rwb thaiv tsev: dawb tabular alumina yog cov khoom siv hluav taws xob zoo heev, nws cov rwb thaiv tsev kev ua tau zoo heev, thiab nws tseem tuaj yeem tswj cov rwb thaiv tsev zoo nyob rau hauv qhov kub thiab txias.
