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Influence of Different Additives on Microstructure of a- alumina Powders

SUN Haibin 1.2, LIU Ting 3, ZHAO Youyi 1

(1.Jingang New Materials Co., Ltd., Binzhou Shandong 256216, China; 2. Shandong Engineering Research Center of Environmental Ceramics, Binzhou Shandong 256200, China; 3. Research Institute of Zouping Environmental Protection Bureau, Binzhou, Shandong 256216, China)

Abstract:The influence of additives, including boric acid, magnesium chloride and aluminum fluoride, on the microstructure of a­alumina has been studied by SEM. It was discovered that boric acid can promote grain growth, magnesium chloride has the opposite effect, and aluminum fluoride may promote big sheet crystal grain generation and development.

Key words:a- alumina; boric acid; magnesium chloride; aluminum fluoride; microstructure


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