Abstract
Aluminium, 304L stainless steel, super-invar and brass substrates were coated with WC-4.88wt%Co using the High Velocity Oxyl-Fuel (HVOF) technique. Microstructure and phase identification studies were done using optical microscopy, scanning electron microscopy, X-ray diffraction and atomic force microscopy. X-ray residual stress and microhardness measurements were also undertaken. Porosity and grain sizes were determined. From the X-ray diffraction spectra of the sprayed coatings, differences in the phases present for each coated substrate were observed. The coatings had similar microhardnesses within experimental error. The residual stress results were different for each coating sprayed onto different substrates. These differences were interpreted as originating from the different specific heat capacities and coefficients of linear thermal expansion of the substrates.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010 |
| Publisher | European Powder Metallurgy Association (EPMA) |
| Volume | 3 |
| ISBN (Print) | 9781899072194 |
| Publication status | Published - 2010 |
| Event | World Powder Metallurgy Congress and Exhibition, World PM 2010 - Florence, Italy Duration: Oct 10 2010 → Oct 14 2010 |
Other
| Other | World Powder Metallurgy Congress and Exhibition, World PM 2010 |
|---|---|
| Country | Italy |
| City | Florence |
| Period | 10/10/10 → 10/14/10 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Ceramics and Composites
- Materials Chemistry
- Metals and Alloys
- Condensed Matter Physics
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Effect of substrates on the microstructure of thermally sprayed WC-4.88 wt% Co coatings. / Oladijo, O. P.; Venter, A. M.; Cornish, L. A.; Sacks, N.; Shrivastava, S.
Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010. Vol. 3 European Powder Metallurgy Association (EPMA), 2010.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Effect of substrates on the microstructure of thermally sprayed WC-4.88 wt% Co coatings
AU - Oladijo, O. P.
AU - Venter, A. M.
AU - Cornish, L. A.
AU - Sacks, N.
AU - Shrivastava, S.
PY - 2010
Y1 - 2010
N2 - Aluminium, 304L stainless steel, super-invar and brass substrates were coated with WC-4.88wt%Co using the High Velocity Oxyl-Fuel (HVOF) technique. Microstructure and phase identification studies were done using optical microscopy, scanning electron microscopy, X-ray diffraction and atomic force microscopy. X-ray residual stress and microhardness measurements were also undertaken. Porosity and grain sizes were determined. From the X-ray diffraction spectra of the sprayed coatings, differences in the phases present for each coated substrate were observed. The coatings had similar microhardnesses within experimental error. The residual stress results were different for each coating sprayed onto different substrates. These differences were interpreted as originating from the different specific heat capacities and coefficients of linear thermal expansion of the substrates.
AB - Aluminium, 304L stainless steel, super-invar and brass substrates were coated with WC-4.88wt%Co using the High Velocity Oxyl-Fuel (HVOF) technique. Microstructure and phase identification studies were done using optical microscopy, scanning electron microscopy, X-ray diffraction and atomic force microscopy. X-ray residual stress and microhardness measurements were also undertaken. Porosity and grain sizes were determined. From the X-ray diffraction spectra of the sprayed coatings, differences in the phases present for each coated substrate were observed. The coatings had similar microhardnesses within experimental error. The residual stress results were different for each coating sprayed onto different substrates. These differences were interpreted as originating from the different specific heat capacities and coefficients of linear thermal expansion of the substrates.
UR - http://www.scopus.com/inward/record.url?scp=84902202569&partnerID=8YFLogxK
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M3 - Conference contribution
SN - 9781899072194
VL - 3
BT - Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010
PB - European Powder Metallurgy Association (EPMA)
ER -