Influence of large particle size – up to 1.2 mm – and morphology on wear resistance in NiCrBSi/WC laser cladded composite coatings
| Autor: | Dorian Deschuyteneer, Francis Cambier, Maurice Gonon, Fabrice Petit |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Morphology (linguistics) Carbon steel Composite number 02 engineering and technology Substrate (electronics) engineering.material law.invention chemistry.chemical_compound 0203 mechanical engineering Tungsten carbide law Materials Chemistry Composite material Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Laser Surfaces Coatings and Films Wear resistance 020303 mechanical engineering & transports chemistry engineering Particle size 0210 nano-technology |
| Zdroj: | Surface and Coatings Technology. 311:365-373 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2016.12.110 |
| Popis: | This paper aims at studying the influence of the reinforcement particle size and morphology on the wear resistance properties of NiCrBSi-based composites. Numerous papers have already been written on this subject but almost all of them studied the “conventional” particle size for laser cladding (i.e. between 20 and 200 μm). The objective of this study is to see the influence of coarser reinforcement particles, up to 1.2 mm, and the influence of the morphology (spherical and random shaped) on the coatings erosive and sliding wear resistance. Laser clad coatings were deposited on low carbon steel substrate S235JR with various amounts of WC/W 2 C particles up to 50 vol.%. The coatings were processed by using a 3.8 kW High Power Diode Laser (HPDL). Spherical tungsten carbide particles from 40 μm up to 1200 μm were used in this study as well as random shaped particles from 40 μm to 400 μm. To assess the influence of the reinforcement particle properties on wear properties, wheel tests and pin-on-disk tests were performed on each composition. From this study, it can be concluded that there is an obvious advantage in using larger particles (750–1200 μm) in harsh conditions while smaller particles (40–160 μm) improve the resistance in sliding conditions. The effect of morphology has not been proved significant. |
| Databáze: | OpenAIRE |
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