氧源系数对内氧化法制备的Al_2O_3/Cu复合材料性能的影响  

Effect of Oxygen Source Coefficient on Properties of Al_2O_3 Dispersion-strengthened Copper Composites Prepared by Internal Oxidation Process

作　　者：马帅 郭曙强[1] 苏新 乔梦然 黄诗怡 Ma Shuai;Guo Shuqiang;Su Xin;Qiao Mengran;Huang Shiyi(Key Laboratory of Advanced Special Steel ＆ Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and Engineering, Shanghai University, Shanghai 200072, Chin)

机构地区：[1]省部共建高品质特殊钢冶金与制备国家重点实验室上海市钢铁冶金新技术开发应用重点实验室和上海大学材料科学与工程学院,上海200072

出　　处：《上海金属》2018年第3期59-63,共5页Shanghai Metals

摘　　要：以Cu-Al水雾化合金粉末为原料,通过内氧化方法制备了Al_2O_3弥散强化铜基复合材料,研究了不同氧源系数下合金粉末内氧化的产物及复合材料的性能。结果表明,复合材料的强化相中,α-Al_2O_3含量较多,γ-Al_2O_3含量较少。只采用冷等静压-烧结的方法,不加任何后续处理,当氧源系数为1.1时,复合材料的显微硬度最高,可达120.8 HV,导电性可达82.4%IACS。Using water atomized Cu-Al alloy powder as raw materials,the Al2O3 dispersionstrengthened copper composites were fabricated by internal oxidation method. The oxidation products of alloy powders and the properties of composites under different oxygen source coefficients were studied. The results indicated that in the strengthening phase of the composite,the amount of α-Al2O3 phase was much more than γ-Al2O3 phase. Only when the cold isostatic pressure-sintering method was used without any subsequent treatment,and the oxygen source coefficient was 1. 1,the micro-hardness of the composites reached the highest hardness of up to 120. 8 HV and the electrical conductivity of up to 82. 4 % IACS.

关 键 词：内氧化 氧源系数 弥散强化 AL2O3 CU复合材料 

分 类 号：TB333[一般工业技术—材料科学与工程]