Study on Microstructure and Tribological Performance of Diamond/Cu Composite Coating via Supersonic Laser Deposition
Source abstract
Abstract
The supersonic laser deposition (SLD) of diamond/Cu composite powder is studied over a range of laser power. The deposition efficiency, coating microstructure, cohesive/adhesive bonding, phase composition, micro-hardness, and tribological property of the diamond/Cu composite coating are investigated. The results indicate that, as laser power is increased, deposition efficiency initially increases and then declines. The diamond particles distribute uniformly in the composite coating. Due to the increase of velocity ratio and total energy by laser irradiation, the cohesive/adhesive bonding of the composite coating is improved. The composite coating can preserve the phase composition of the origin powders due to the relatively low heat input during the SLD process. Slight oxidation of the Cu powder can be detected in the coatings prepared with high laser power, which has adverse effects on material deposition. The SLD-diamond/Cu composite coating has superior wear-resistance because of low friction coefficient, high micro-hardness, and uniformly distributed diamond particles.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Diamond and Carbon-based Materials Research · High-Temperature Coating Behaviors · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, China
Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Hangzhou 310023, China
Funding
National Natural Science Foundation of China · National Key R&D Program of China · Postdoctoral Research Program of China · the 111 Project
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