以铜铝合金粉为原料,利用反应球磨并结合放电等离子烧结工艺制备了Al2O3/Cu复合材料,研究了球磨不同时间后合金粉的形貌、物相以及铝含量对复合材料组织与性能的影响。结果表明:铜铝合金粉球磨20 h后,生成了粒径为2~5 μm的类球状颗粒,Cu相衍射峰发生明显的宽化,在铜基体中原位生成了纳米α-Al2O3颗粒相;Al2O3颗粒的尺寸及其在基体中的分布与铝含量有关,随着铝含量增加,Al2O3颗粒逐渐长大、富集甚至团聚;复合材料的相对密度和导电率均随着铝含量的增加逐渐降低,显微硬度则逐渐升高;当铝的质量分数为0.7%时,复合材料具有最佳的综合性能。
所属栏目
新材料新工艺重点实验室基金资助项目(9140C850201110C85);“十二五”装备预先研究项目(51326020202)
收稿日期
2013/11/12014/8/29
作者单位
刘贵民:装甲兵工程学院装备再制造工程系, 北京 100072
李斌:装甲兵工程学院装备再制造工程系, 北京 100072
闫涛:装甲兵工程学院装备再制造工程系, 北京 100072
郑晓辉:装甲兵工程学院装备再制造工程系, 北京 100072
丁华东:装甲兵工程学院装备再制造工程系, 北京 100072
备注
刘贵民(1971-),男,山东阳谷人,教授,博士。
引用该论文:
LIU Gui-min,LI Bin,YAN Tao,ZHENG Xiao-hui,DING Hua-dong.Microstructure and Properties of Al2O3/Cu Composite Prepared by Reaction Milling Following Sintering[J].Materials for mechancial engineering,2015,39(1):63～67
刘贵民,李斌,闫涛,郑晓辉,丁华东.反应球磨烧结制备Al2O3/Cu复合材料的组织与性能[J].机械工程材料,2015,39(1):63～67
被引情况:
【1】
王天国,覃群, "烧结温度对铜基粉末冶金摩擦材料组织和性能的影响",机械工程材料
40, 39-42(2016)
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