Erosion-corrosion resistance of thermal sprayed coatings
- Morgan State Univ., Baltimore, MD (United States). School of Engineering
- Metalspray USA, Inc., Richmond, VA (United States). Metallurgical Lab.
A series of laboratory erosion-corrosion experiments at the elevated temperature, 300 C and different impact velocities (2.5 m/s, 30 m/s) were carried on AISI 1018 low carbon steel and three different sprayed coating specimens. Angular silica quartz particles of 742 um were the erodent material for testing three different impact angles of 30{degree}, 45{degree}, and 90{degree}. Material wastage rates were determined from thickness loss measurements of the specimens. The morphologies of the specimens were examined by scanning electron microscopy (SEM). The erosion-corrosion resistance of coating was found to be related to their composition and microstructure rather than to their hardness. The material wastage of the specimen was determined by weight and thickness loss measurements. The morphologies of the specimens were examined scanning electron microscopy (SEM). For the material wastage of the coating specimens, High Velocity Oxygen Fuel (HVOF) coatings (DS200) and the arc-sprayed coating at elevated temperature condition exhibited 2 to 3 times lower erosion wastage than that of AISI 1018 steel.
- OSTI ID:
- 382831
- Report Number(s):
- CONF-960154--; ISBN 0-9648731-8-4
- Country of Publication:
- United States
- Language:
- English
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