Актуальные проблемы в машиностроении №2 2015

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Актуальные проблемы в машиностроении. 2015. №2 Материаловедение
в машиностроении
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STRUCTURAL FEATURES OF WEAR-RESISTANT PLASMA COATINGS
AFTER HIGH FREQUENCY CURRENT ACTION
Zverev E.A., Ph.D. (Engineering), Associate Professor, e-mail:
Chesov Yu.S., Ph.D. (Engineering), Associate Professor, e-mail:
Vakhrushev N.V., Ph.D. student, e-mail:
Tregubchak P.V., assistant, e-mail:
Zarubin ., student, e-mail:
Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russian
Federation
Abstract
The research results of the induction heating effect on the structure of wear-resistant plasma
coatings from the high-chromium powder material PG-S27 are presented in the article. The results
of raster metallographic examinations of the surface of plasma coatings at the spraying stage and
after an additional high energy action by high-frequency currents are shown. It is noted that the
topography of the coating surface becomes more uniform after repeated high temperature heating,
pores and the unmelted powder particles mostly disappear and the carbide component in the plasma
coating structure is retained. It confirms that repeated heating modes are rational.
Keywords
wear resistance; plasma coatings; high-chromium cast iron; structure; raster microscopy;
induction heating