氢氧化铝和氢氧化锶复合粉末的制备及热处理  

Research on heat treatment and preparation of Al(OH)_3 and Sr(OH)_2 composite powder

作　　者：胡劲[1] 孙家林[1] 刘建良[1] 施安[1] 徐茂[1] 王开军[1] 

机构地区：[1]昆明理工大学材料与治金工程学院

出　　处：《无机盐工业》2007年第2期18-20,共3页Inorganic Chemicals Industry

基　　金：云南省科研院所技术开发研究专项基金项目(项目编号:2003KFZX-14)

摘　　要：采用活化铝-锶合金粉末水解反应制备氢氧化铝和氢氧化锶复合粉末，并在700℃下进行热处理，利用XRD，SEM，BET和TG—DTG等分析技术对复合粉末结构、性能及热处理进行研究。结果表明，铝-锶合金粉末水解反应产物为氢氧化铝和氢氧化锶的复合粉末，微观形貌为1～3μm片状小颗粒叠加的团聚颗粒，BET比表面积较大。达到45．2m^2／g。TG—DTG结果显示，在70～190℃，八水氢氧化锶中8个结晶水脱水，在190～650℃，氢氧化铝和氢氧化锶热分解。经700℃下热处理1h后，其相组成、微观形貌、BET比表面积都将发生较大的变化。The hydrolyzation of activated Al - Sr alloy powder was adopted to prepare Al （OH） 3 and Sr （ OH ） 2 composite powder and which will be treated at 700 ℃. The structure, properties and heat treatment of composite powder had been studied by XRD, SEM, BET, TG - DTG. The results showed that the hydrolysate of Al - Sr alloy powder hydrolyzation reaction was the composite powder of AI（ OH）3 and Sr（OH）2. The micrograph of composite powder was like an agglomerated particle,which was piled up by many 1 -3 μm microflaky granule. The BET specific surface area was great, up to 45.2 m^2/g. The results of TG - DTG showed the crystalline water was dehydrated at 70 - 190 ℃. The Sr （ OH ） 2 and Al（OH） 3 were thermo - decomposed at 190 -650 ℃. After heat treatment at 700 ℃ for 1 h,the phase,micrograph and the BET specific surface area all had changed a lot.

关 键 词：铝-锶合金 氢氧化铝 氢氧化锶 

分 类 号：TQ133.1[化学工程—无机化工]