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http://dx.doi.org/10.3740/MRSK.2003.13.1.024

Microstructure of Raney Ni fabricated by Mechanochemical Process in Al-Ni System  

Choi, Jae-Woong (Div. of Materials Science and Engineering, Hanyang Univ.)
Lee, Chang-Rae (Korea Institute of Machinery & Materials)
Kang, Sung-Goon (Div. of Materials Science and Engineering, Hanyang Univ.)
Publication Information
Korean Journal of Materials Research / v.13, no.1, 2003 , pp. 24-30 More about this Journal
Abstract
The Raney Ni catalyst was fabricated by mechanochemically process(MC process) in the Al-Ni system. Intermetallic compound obtained by mechanical alloying was leached in an alkaline solution. The characteristics of the mechanically alloyed powder and Raney Ni catalyst were analyzed by XRD, ICP-AES and EXAFS. In Al-50wt.%Ni, the metastable intermetallic compound phase close to AlNi phase was obtained by mechanical alloying unlike Al-Ni equilibrium phase diagram. The metastable intermetallic compound was transformed into $Al_3$$Ni_2$phase via the annealing at $750^{\circ}C$. The microstructure of Raney Ni fabricated by MC process was mainly bcc Ni including fcc Ni.
Keywords
Raney Ni; Mechanochemically process; Mechanical alloying; EXAFS;
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