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| Abstract No.: |
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Scheduled at:
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Wednesday, May 11, 2016, Room 3E 11:40 AM
Cold Gas Spraying III
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| Title: |
Comparison of diamond-reinforced composite coating with different feedstock by cold spraying
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| Authors: |
Sho Yin* / The University of Dublin, Ireland
Rocco Lupoi / Trinity College, Ireland
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| Abstract: |
Diamond-reinforced composite coating has great potential in the industrial application. For cold spray, the conventional way to deposit diamond/metal composite coating always requires large fraction of dilute metal phase to guarantee the diamond phase to be embedded into the coating. As a result, the fraction of the diamond phase in the composite coating is normally lower in comparison with the dilute metal phase, which limits the performance of composite coating. In this work, Cu-coated-diamond particles in which the volume percentage of diamond is far higher than dilute metal phase were successfully deposited on the Al substrate. For comparison, the conventional Cu/diamond composite coatings were also produced using mechanically mixed and ball-milling feedstock. The comparison was carried out in terms of deposition efficiency, diamond fraction and coating performance. The results indicated that Cu-coated-diamond coating is better than the other two coatings in all cases. Furthermore, the bonding mechanism of the Cu-coated-diamond particle was also clarified.
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