超声电解法制备超细金属粉的研究.pdf

第 18 卷第4 期 总第72 期 Vo 1 . 18 No . 4 M aterials Science Engineering Dec . 2000 : 1004-793 ( 2000) 04-0070-05 1 2 2 2 , , , ( 1. , 264001; 2. , 410073) ; , ; (T EM ) X ( ) ( ) , SAXS X XRD 100 nm , , , ; ; : T B383: A Preparation of Ultrafine Metallic Powder by Ultrasonic Electrolysis 1 2 2 2 WA G Ju-xiang , ZHAO Xun , PA Jin ,YI Xin-fang ( 1. , Department of Mechanical Engineering aval AeronauticalEngineering Academy, Yantai264001, China; 2. Department of Material Science and Applied Chemistry, , 410073, ) ational University of Defence Technology Changsha China Abstract Ultrasonic electroly sis process for preparing ultrafine m etallic pow der is investigat ed in this paper. By changing the parameters, such as t he concentration of solute, ultrasonic power , electric current , . densit y et al t he preparation techniques of ultrafine copper and nickel pow der w as studied By the means of T EM , SAXS and XRD , t he size and structure w as analyzed. E periment al results indicated that Cu and Ni 100 , pow der less than nm can be prepared under appropriate conditions and that pow der size increases when current density increases. T his is caused by the caviation mechanism of ultrasound. In the process of pow der ,