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Izitini ze-corundum ezihlanganisiwe zesithando somlilo sengilazi

Izitini ze-corundum ezihlanganisiwe zesithando somlilo sengilazi

Isitini esimhlophe esimhlophe esifakwe ku-α-AL2O3, esisohlelweni lwe-trigonal crystal. Kutholakala ngokuncibilikisa i-alumina yezimboni emazingeni okushisa aphezulu kusithando somlilo kagesi, ukupholisa nokufaka amakhemikhali abe ingotshi, bese kugaywa, kukhethwa, kucutshungulwa futhi kuhlolwe. Kuyinto ezinzile phakathi kokuhlukahluka okuningi kwe-alumina. Inephuzu lokuncibilika eliphakeme (2030), ukuminyana okuphezulu (3.99 ~ 4.0g / cm3), ukwakheka okuhlanganisiwe, ukuqhutshwa okuhle kokushisa, ukulingana kokushisa okushisayo okuncane (86 × 10-7 /) nomfaniswano. I-amphoteric oxide, evame ukuba ne-alkaline engenamandla noma engathathi hlangothi emazingeni okushisa aphezulu, futhi inokuzinza okuhle kwamakhemikhali. Ngakho-ke, i-corundum emhlophe ehlanganisiwe iyinto enqabayo yokuphonsa utshalomali. Izinto ezihlanganisiwe ezimhlophe ze-corundum zicebile kwizinsizakusebenza zamaminerali futhi ngamanani aphansi, okufanelekile ukukhethwa nokwenyuswa.

Izinkomba zomzimba nezamakhemikhali zezitini ezihlanganisiwe ze-corundum engilazini encibilikisa isithando somlilo:

Into I-FUSED CAST ALUMINA I-FUSED CAST ALUMINA I-FUSED CAST ALUMINA
ab Alumina TY-M a- I-Alumina TY-A b- I-Alumina TY-H
Ukwakheka kwamakhemikhali% I-Al2O3 94 98.5 93
SiO2 1 0.4
I-NaO2 4 0.9 6.5
Amanye ama-oxide 1 0.2 0.5
Ukuhlaziywa kwe-Crystallographic% a-Al2O3 44 90
b-Al2O3 55 4 99
Isigaba seVitreous 1 6 1