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A comparison of three-body abrasive wear behaviour of aluminium composite coatings in both wet and dry environments is presented. Composite coatings reinforced with discontinuous ceramic particles of either Al 2 O 3 , SiC or TiC were studied. These metal matrix composite (MMC) coatings were formed on AA5083 aluminium alloy using a plasma transferred are ( PTA) surfacing technique....
Aluminium-silicon alloys and aluminium-based metal-matrix composites have found application in the manufacture of various automotive engine components such as cylinder blocks, pistons and piston insert rings where adhesive wear (or dry sliding wear) is a predominant process. Materials possessing high wear resistance (under dry sliding conditions) are associated with a stable tribolayer on the wearing...
The ability to deposit metal matrix composite (MMC) coatings on the surface of aluminium alloys has the potential to expand the engineering applications of these materials. Composite coatings reinforced with discontinuous ceramic particles enhance the substrate's tribological properties. In applications where dry sliding or low stress abrasive wear processes predominate, these coated aluminium alloy...
Wear data obtained from single and multiple scratch passes, combined with the examination of the reinforcement-matrix interfacial structure by transmission electron microscopy (TEM) and toughness measurements made on the reinforcement phase, wereused to evaluate the wear behaviour of aluminium-based composite coatings. Reinforcement properties such as reinforcement volume fraction (Vf ), size, interfacial...
Aluminium-silicon alloys and aluminium-based metal-matrix composites (MMCs) containing hard particles offer superior operating performance and resistance to wear. In industrial processes where abrasive slurries are transported by rotating paddles or impellers, clements fabricated from MMC materials provide higher abrasive resistance and therefore a longer service life compared to those made from iron...
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