Abstract: The self-fluxing Ni-based
alloy coatings and composite ones with chromium carbide were
obtained on the surface of steel by use of a non-vacuum fusing
process. The friction and wear behavior of the two kinds of
coatings was searched. In order to improve the properties of the
coatings, a rare earth additive was added to the coatings and
its functions were analyzed. The test results show that the
surface fusing coatings possess strong metallurgical bond with
the steel substrate, and so do the hard phase particles with the
coating matrix; the coatings with the rare earth additive have
lower friction coefficient, better wear resistance and can be
used on a higher load condition. The functions of the rare earth
additive are discussed. Its effect on the composite coating is
more efficient in wear resistance.
Key words:
Fusing Coating Friction Wear Rare
earth additive
Manuscript received on July
15, 1992
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