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Characterization of Vacuum Plasma Sprayed Mechanofused NiAl

Published online by Cambridge University Press:  01 January 1992

Z.J. Chen ,
H. Herman ,
C.C. Huang  and
R. Cohen
Z.J. Chen
Affiliation:
Dept. of Materials Science and Engineering, State University of New York, Stony Brook, NY 11794-2275, USA
H. Herman
Affiliation:
Dept. of Materials Science and Engineering, State University of New York, Stony Brook, NY 11794-2275, USA
C.C. Huang
Affiliation:
Micron Powder Systems, 10 Chatham Road, Summit, NJ 07901, USA.
R. Cohen
Affiliation:
Micron Powder Systems, 10 Chatham Road, Summit, NJ 07901, USA.
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Abstract

Vacuum plasma spray is a melt spray process capable of producing coatings or near-net shaped deposits with ultra-fine grained structures. Mechanofusion is a novel technique for processing powdered materials. In this study, mixtures of elemental Ni and Al powders, either blended or mechanofused, were vacuum plasma sprayed, yielding a series of Ni-Al intermetallic phases. Mechanofusion resulted in significant effects on the phase distribution in subsequently as-sprayed deposits. After heat treatment at 1100 °C, single phase NiAl was obtained for both the mechanofused and blended samples. The microhardness of the NiAl is comparable to that produced by other methods. These preliminary experiments indicate that mechanofusion and vacuum plasma spraying can be employed to produce various compounds using mixed elemental powders.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 835
Copyright
Copyright © Materials Research Society 1995

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