Influence of thermal spraying method on the propersties of tungsten carbide coating
The main tendencies in the development of tungsten carbide coating applications are presented. General properties of WC based coatings and their dependence on different factors are discussed. For comparative examination of the abrasive wear resistance of thermal spray coatings detailed Taber Abraser wear tests are carried out. Besides HVOF sprayed cermet and APS Cr2O3 also electroplated hard chromium coatings are studied. The best results have been obtained for HVOF sprayed cermet coatings. For this kind of wear conditions the difference in wear behaviour depending on carbide size in WC-CoCr coatings is insignificant compared to the difference depending on the matrix composition.
B. WIELAGE, H. POKHMURSKA, A. WANK, G. REISEL, S. STEINHAEUSER, M. WOEZEL
Institute of Composite Materials, Chemnitz University of Technology, Chemnitz, Germany