固液反应球磨制备Al-Cu-Co三元金属间化合物  

Fabrication of Al-Cu-Co Ternary Alloy Powders By Means of Solid-liquid Reaction Milling

作　　者：蔡建国[1] 陈刚[1] 徐红梅[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2005年第3期28-32,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50304008)

摘　　要：利用固液反应球磨技术制备了Al Cu Co三元合金.分别采用Co球球磨Al 33.2%Cu(此文中的百分比为质量分数),Al 54%Cu(Al2Cu)和Al 70%Cu(AlCu)二元合金熔体,在923K和973K球磨Al 33.2%Cu熔体12h后生成Al65Co15Cu20粉末;在923K和1023K球磨24h后生成Al69Co25Cu6粉末,在893K和993K分别球磨Al 54%Cu(Al2Cu)合金熔体12h和24h后均生成Al65Co15Cu20粉末;在1123K球磨Al 70%Cu合金熔体24h后生成Al65Co15Cu20粉末.采用Al Cu Co固液反应球磨得到的金属间化合物粉末为纳米粒子.同时,对Al Cu Co三元合金相形成的规律进行了研究,对固液反应球磨机理进行了探讨.在固液反应球磨过程中,三元合金产物的元素摩尔比接近于二元母合金中的元素摩尔比;三元合金产物成分中固相第三组元的成分含量与二元母合金熔体成分有很大关系;提高反应球磨温度、延长球磨时间有利于三元合金产物的形成;延长球磨时间,形成的三元合金产物中磨球的成分增加;反应球磨温度超出二元母合金熔点越高,球磨反应越容易进行.<Abstrcat>Al-Cu-Co ternary alloy powders were fabricated with a new solid-liquid reaction milling technology. Al_(65)Co_(15)Cu_(20)powder was obtained by milling Al-33.2% Cu(mass friction)eutectic alloy melt at 923 K or 973 K for 12 hours, and Al_(69)Co_(25)Cu_6 powder was prepared when Al-33.2%Cu alloy melt were milled at 923 K or 1 023 K for 24 hours. Al_(65)Co_(15)Cu_(20) powder was obtained by milling Al-54%Cu(Al_2Cu) hypereutectic alloy melt at 893 K or 993 K for 12 or 24 hours. Al_(65)Co_(15)Cu_(20) powder was the result of milling Al-70%Cu(AlCu) alloy melt at 1 123 K for 24 hours. All the Al-Cu-Co intermetallic powders obtained were nanoparticles. Moreover, the reaction mechanism and the advantages were analyzed and discussed. The atom ratio of the ternary alloy was close to that of the binary alloy. Higher milling temperature and longer milling time were favorable to the formation of the ternary alloy powders. The third solid component of the ternary alloy powders increased with the milling time.

关 键 词：固液反应球磨 机械力化学 三元合金 金属间化合物 

分 类 号：TB383[一般工业技术—材料科学与工程]