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3702 |
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Thursday, May 22, 2014, Hall A 2:20 PM Plasma Spraying 2 |
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Effect of vacuum annealing on the microstructure and tribological properties of Fe-40Al coatings deposited by atmospheric plasma spraying |
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Bo Song* / IRTES-LERMPS, Université de Technologie de Belfort-Montbéliard, Site de Sévenans, 90010 Belfort Cedex, France, France Shujuan Dong/ IRTES-LERMPS, UTBM, Belfort, France, France Hanlin Liao/ IRTES-LERMPS, UTBM, Belfort, France, France Christian Coddet/ IRTES-LERMPS, UTBM, Belfort, France, France |
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The effects of vacuum annealing on the microstructure, phase evolution and tribological behavior of Fe-40Al coatings prepared by atmospheric plasma spraying have been investigated. The deposited specimens were annealed at different temperatures of 650, 950 and 1000°C. Inspections by SEM and phase analysis by XRD indicated that bcc-FeAl transformed into B2-FeAl with high long relative order degree after heat treatments. Generation of these phases increased the coatings hardness. Tribological properties were studied by ball-on-disc friction test. Results showed that the wear resistance of Fe-40Al coating was greatly improved by an appropriate heat treatment temperature. |