快速凝固法制备Al-Sr合金粉末  

Research on hydrolyze reaction of Al-Sr alloy

作　　者：胡劲[1] 刘建良[1] 施安[2] 徐茂[2] 王开军[2] 孙家林[1] 

机构地区：[1]昆明理工大学材冶学院,云南昆明650011 [2]昆明贵金属研究所,云南昆明650221

出　　处：《轻合金加工技术》2006年第2期24-26,共3页Light Alloy Fabrication Technology

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

摘　　要：采用多级雾化工艺的快速凝固法获得Al-Sr合金粉末。利用XRD、SEM、BET和激光粒度测试仪技术对Al-Sr合金粉末进行结构和性能研究。研究结果表明,当采用冷却速率较快的多级雾化喷雾制粉工艺时,包晶反应被抑制,所得到的Al-Sr合金粉末主晶相为Al2Sr,少量为Al4Sr。Al2Sr晶格常数:ɑ=4.82 nm,b=7.91 nm,c=7.96 nm。合金粉末粒径小,粒度分布均匀,D50=27.87μm,D25/D75=0.685。合金粉末比表面积为0.9613 m2/g,颗粒表面光滑,呈液滴形。The activated AI-Sr alloy powder had been prepared by multistage-spraying and spinning atomized equipment. The structure and properties of AI-Sr alloy powder had been researched by XRD, SEM, BET and laser particle sizer. The results shows that the peritectic reaction is restrained for high cooling velocity in multistage-spraying and spinning atomized technics. The main crystal phase of AI-Sr alloy powder is Al2Sr, small partial is Al4Sr. The calculated crystal lattice parameters is a=0.482nm, b=0.791nm,c=0.796nm. The diameter of Al-Sr alloy powder is small and has uniform distribution： D50=27.87μm, D25/D75 = 0.685. The BET surface area is 0.9613 m^2/g. The micrography of powder is like water drop.

关 键 词：快速凝固 AL-Sr合金 粉末 

分 类 号：TF124[冶金工程—粉末冶金]