Abstract
Boron nitride nanoplatelet (BNNP) reinforced Ni3Al composite coatings were fabricated by using plasma spray. The results show that the main phases of the coating contain in-situ synthesized Ni3 Al and trace amounts of Al203. Compared with monolithic Ni3 Al coating, the BNNP/Ni3 Al composite coating displays a good combination of improved wear resistance and relatively low coefficient of friction, especially the wear resistance of the composite is increased up to 1.5 times. The addition of BNNPs induces a change of the dominant wear mechanisms from brittle fracture and three-body abrasive wear associated with the monolithic Ni3 Al coating to mild abrasive wear along with the BNNP/Ni3 Al composite coating. Furthermore, the formation of B N N P tribolayer on the worn surface of the composite coating not only contributes to the self-lubrication function but also significantly suppresses contact damage of both the composite coating and its counterpart.
Translated title of the contribution | Tribological properties of plasma-sprayed boron nitride nanoplatelet reinforced Ni3Al composite coating |
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Original language | Chinese (Traditional) |
Pages (from-to) | 266-271 |
Number of pages | 6 |
Journal | Jinshu Rechuli/Heat Treatment of Metals |
Volume | 47 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 2022 |
Externally published | Yes |
Keywords
- boron nitride nanoplatelet
- Ni3 Al composite coating
- plasma spraying
- tribological properties