Abrasion and erosion wear resistance of Cr{sub 3}C{sub 2}-NiCr coatings prepared by plasma, detonation and high-velocity oxyfuel spraying
- Tampere Univ. of Technology, Tampere (Finland)
Chromium carbide based cermet coatings (Cr{sub 3}C{sub 2}-NiCr) deposited by atmospheric plasma spraying (APS), detonation gun spraying (DGS), and high-velocity oxyfuel flame spraying (HVOF) methods were evaluated with the microstructure, microhardness, phase structure, room temperature abrasion wear and particle erosion wear resistance. The influence of some spray parameters, e.g, the use of different plasma gases (Ar-H{sub 2}, Ar-He) in plasma spraying, and fuel gas-to-oxygen ratio (C{sub 2}H{sub 2}/O{sub 2}) and diluent gas content in detonation gun spraying, were studied in order to optimize the wear resistance of the coatings. The results showed that Cr{sub 3}C{sub 2}-NiCr coatings had different wear properties depending on the spray parameters and spray methods used. Highest wear resistance was obtained with coatings prepared by the high-velocity combustion processes, i.e. by HVOF and detonation gun spraying.
- OSTI ID:
- 160439
- Report Number(s):
- CONF-940684--; ISBN 0-87170-509-5
- Country of Publication:
- United States
- Language:
- English
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