Uyini umehluko phakathi kwe-white corundum ne-alumina?

I-corundum emhlophe ne-alumina ayiyona into efanayo. Ngokuqondene nesizathu, vumela umhleli ovela ku-Henan Sicheng akutshele ngokuningiliziwe: Uyini umehluko phakathi kwe-corundum emhlophe ne-alumina?

1. I-corundum emhlophe i-abrasive yokwenziwa eyenziwe nge-alumina njengempahla eluhlaza futhi incibilika futhi ipholiswe ezingeni lokushisa eliphezulu. I-Alumina iyinhlanganisela yobulukhuni obuphezulu.

2. Ingxenye eyinhloko ye-corundum emhlophe yi-alumina. Ngokuqondile, iwuhlobo lwekristalu lwe-alumina, okuyi-α-Al2O3. Ngaphezu kwe-alumina, kukhona ukungcola okuncane okufana ne-iron oxide ne-silicon oxide. I-Alumina iyi-oxide ezinzile ye-aluminium. Izakhi eziyinhloko umoya-mpilo ne-aluminium, futhi ifomula yamakhemikhali i-alumina. Kunamakristalu amaningi afanayo nangawona afanayo, afana ne-α-Al2O3, β-Al2O3 kanye ne-γ-Al2O3.

3. Izakhiwo ezibonakalayo Iphuzu lokuncibilika le-corundum emhlophe lingu-2250℃, futhi ukubukeka kwe-crystal form yi-trigonal crystal. Iphuzu lokuncibilika kwe-alumina lingaphansi kuka-2010°C-2050°C. Ukubukeka kwayo kuyimpushana emhlophe, futhi isigaba sayo sekristalu siyisigaba esingu-γ.

4. I-corundum emhlophe ivamise ukusetshenziswa lapho kwakhiwa iziqhumane, kodwa futhi ingasetshenziswa ezimbonini ezifana nama-catalysts, insulators, casting, kanye ne-sandblasting. I-Alumina isetshenziswa kakhulu ezimbonini ezifana ne-heat conduction, polishing, electroplating, kanye nama-catalysts.