Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 9 No. 3 September 1999|
（1. Functional Materials Institute,Central Iron&Steel Research Institute, Beijing100081, P.R.China;
2. Department of Materials Physics, University of Science and Technology Beijing, Beijing100083, P.R.China;
3. Beijing Synchrotron Radiation Facility, High Energy Physics Institute,the Chinese Academy of Sciences, Beijing100039, P.R.China）
Abstract:The Ni-Al alloy containing Cr, Fe additives were prepared as Raney Ni catalyst by high energy milling. The size and surface state of Ni-Al alloy powder were studied by particle size analyzer and sanning electron microscopy, the structure was analyzed by XRD and M ssbauer methods. The results showed that after a high-energy milling (HEM), the Ni-Al alloy transforms to a nano-scale NiAl structure with rich Al. By annealing the alloy, a metastable Ni2Al3 phase can be obtained.
Key words: Raney nickel catalyst; nano-crystal; high-energy; milling