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Keywords:

  • tungsten carbide;
  • brazing;
  • microstructure;
  • SEM

WC–Ni composite coatings were developed by the powder cloth and the vacuum brazing technology. The wear resistance and the corrosion resistance of the brazed WC–Ni coatings were investigated. The peeling coating samples were prepared by using solder mask during brazing. The microstructures for the powder cloth and for the brazed coatings were characterized by scanning electron microscopy. The distribution of elements in the different area of the brazed coatings was determined by energy dispersive X-ray maps. It shows that the segregation of chromium carbides occurs during brazing. Apart from penetrating into the interspaces of WC particles, the Ni-based filler can also infiltrate and spread on the substrate surface. Copyright © 2012 John Wiley & Sons, Ltd.