Deposition of Self-Lubricating Coatings via Supersonic Laser Deposition (SLD)
Source abstract
Abstract
This paper describes the use of Supersonic Laser Deposition (SLD) to manufacture nickel/graphite composite coatings on titanium and aluminium substrates. Laser heating is critical for depositing coatings containing up to 13.3 vol% graphite. For a given feedstock composition, the resulting graphite content and average size of the graphite particles retained in the coating increases with laser power, until substrate melting occurs. The effect of the powder type, feedstock composition, and process conditions on coating structure is characterized. The friction and wear behaviour of selected coating compositions is examined. Nickel coatings containing 13.3 vol% graphite demonstrated self-lubricating behaviour with a stable coefficient of friction below 0.14 in pin-on-disc testing.
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Research context
OpenAlex topics: High-Temperature Coating Behaviors · Tribology and Wear Analysis · High Entropy Alloys Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Manufacturing (IfM), University of Cambridge, 17 Charles Babbage Road, Cambridge CB3 0FS, UK
Funding
Engineering and Physical Sciences Research Council
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