ρ-Al_2O_3在不同介质中的水化行为研究  

Hydration Behavior of ρ-Al_2O_3 in Different Media

作　　者：张欣[1,2] 李沅铮 聂强强[1] 闫语 田俐[1] 

机构地区：[1]湖南科技大学材料科学与工程学院,湘潭411201 [2]高温耐磨材料及制备技术湖南省国防科技重点实验室,湘潭411201

出　　处：《硅酸盐通报》2017年第3期829-832,共4页Bulletin of the Chinese Ceramic Society

基　　金：教育部新世纪优秀人才支持计划项目(NCET-13-0784)

摘　　要：通过测定ρ-Al_2O_3在9种介质中水化时料浆的温度与粘度变化和水化产物相组成分析与显微结构观察研究ρ-Al_2O_3的水化行为。研究结果表明,酸性介质阻止ρ-Al_2O_3的水化,碱性介质促进ρ-Al_2O_3的水化;ρ-Al_2O_3在水中和碱性介质中的水化产物主要为粒状、结晶良好的拜耳石,酸性介质中为结晶不完整、呈无定形的勃姆石。Hydration behaviors of the ρ-Al2O3 were investigated by the determinations of temperature and viscosity of the slurries and the phase composition analysis and microstructure observation of the hydrated products in 9 media. It has been shown that,hydration process of the ρ-Al2O3 will be prevent in acidic medium and promote in alkaline medium. Hydration products of the ρ-Al2O3 are mainly crystalline granular bayerite in water and alkaline media and amorphous boehmite in acidic medium.

关 键 词：Ρ-AL2O3 水化行为 相组成 显微结构 

分 类 号：TQ175[化学工程—硅酸盐工业]