Performance of an Al-Si-graphite particle composite piston in a diesel engine

Influences of graphite reinforcement on the tribological properties of self-lubricating aluminum matrix composites for green tribology, sustainability, and energy efficiency—a review

“…Generally, two main processes used to fabricate self-lubricating aluminum composites are (a) solid state processing [76,78,82,[99][100][101][102] and (b) liquid state processing [32,61,63,64,66,80,90,103,104]. The process that is employed to fabricate self-lubricating composites has an effect on the tribological behavior of composites due to variations in microstructure, distribution of graphite, and bonding between matrix and graphite, depending on the process used to manufacture the composites.…”

“…Casting method usually involves producing a melt of the base alloy, introducing solid lubricating particles in the melt, casting the slurry, followed by further heat treatment, if necessary. Two common casting methods used to synthesize the nonequilibrium synthetic type of self-lubricating aluminum matrix composites are (a) infiltration technique, impregnation of the liquid alloy into a graphite preform under high pressure (70-100 MPa), such as squeeze casting and pressure infiltration [44,92,102,105] and (b) dispersion method, such as stir casting or compo-casting in liquid or semi-solid state [80,91,103,106,107]. In pressure infiltration, a loose bed of graphite powder or a bonded perform of graphite is infiltrated by molten alloys, which is then allowed to solidify; the pressure infiltration is suitable for metal graphite composites with very high volume percentage of graphite.…”

Processing of Aluminum-Graphite Particulate Metal Matrix Composites by Advanced Shear Technology

“…Aluminum graphite particulate MMCs produced by solidification techniques represent a class of inexpensive tailor-made materials for a variety of engineering applications such as automotive components (Ref 6,7), bushes, and bearings ( Ref 8,9). Their uses are being explored in view of their superior technological properties such as the low coefficient of friction ( Ref 10,11), low wear rate (Ref [11][12][13], superior gall resistance ( Ref 11,14), high seizure resistance ( Ref 11,15), high damping capacity (Ref 16,17) and good machinability ( Ref 18,19).…”

Tribological Properties of Aluminium 2024 Alloy Beryl Particulate MMC's

“…Many researchers have carried out the work to increase the wear resistance of MMCs by different types of reinforcements. The main outcome of these is that the reinforcement improves the resistance to sliding wear [10][11]. However, the research works on the dry sliding wear of aluminium alloys containing beryl particles were limited.…”

“…This liquid metallurgy method has been used for developing the MMCs by many researchers. [10][11][12][13][14][15][16]. The castings were tested to know the common casting defects using ultrasonic flaw detector.…”