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 Moessbauer 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.
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机译:Octoi de preferences tarifaires pour les produits manufactures et semi-manufactures des pays en voie de developpement。通信委员会委员会=确定发展中国家制造和半成品的关税优惠。委员会与理事会的沟通。 sEC(67)4085决赛,1967年11月9日