What is it about?
The paper describes, how addition of ceramic-metal (cermet) composite particles (in this certain case, WC-Co and TiC-NiMo) to the Fe-based alloy (FeCrSiB) powder influences the high-temperature erosion wear of coatings, which are manufactured from these powder mixtures by high velocity oxy-fuel (HVOF) spraying.
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Why is it important?
The paper shows that addition of both WC-Co and TiC-NiMo particles to the FeCrSiB powder quite remarkably improves the high-temperature erosion wear resistance of HVOF coatings, and that addtion of WC-Co gives slighly better results (though the opposite was originally expected, bearing in mind the low resistivity of WC to oxidation).
Perspectives
Currently WC-based cermets are considered as an unsuitable option as a reinforcement in wear resistant coatings, subjected to a wear at elevated temperatures. This paper demonstrates it is not always so.
Mr. Andrei G. Surzhenkov
Tallinn University of Technology
Read the Original
This page is a summary of: High-temperature erosion of Fe-based coatings reinforced with cermet particles, Surface Engineering, February 2016, Taylor & Francis,
DOI: 10.1080/02670844.2016.1145377.
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