The effect of metal content on the erosion resistance of metal/ceramic co-sprayed composite coatings produced by VPS
- Univ. of Cambridge (United Kingdom)
- TWI, Cambridge (United Kingdom)
Coatings with a range of metal/ceramic contents have been produced by co-spraying of alumina and aluminum, using the Vacuum Plasma Spraying Technique. Attention has been concentrated on ceramic-rich composites containing up to 40% of metal. The resistance of these coatings to erosive wear has been studied, using large silica particles as the erodent, at high and low impingement angles. It is shown that there is scope for the development of composite formulations with good erosion performance over a range of erodent incident angles. These results have been correlated with microstructural characterization and Young modulus measurements, made before and after Hot isostatic Pressing. The composites have higher porosity contents, but also higher stiffness, when compared with the monolithic coatings. This is tentatively explained in terms of an improvement in intersplat bonding being effected by the presence of the metal.
- OSTI ID:
- 160536
- Report Number(s):
- CONF-940684-; ISBN 0-87170-509-5; TRN: IM9603%%118
- Resource Relation:
- Conference: 1994 national thermal spray conference, Boston, MA (United States), 20-24 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of 1994 Thermal spray industrial applications: Proceedings; Berndt, C.C.; Sampath, S. [eds.] [State Univ. of New York at Stony Brook, NY (United States). Dept. of Materials Science and Engineering]; PB: 816 p.
- Country of Publication:
- United States
- Language:
- English
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