Tribological and mechanical characterization of Al-Ni-SiC metal matrix composites

Kumar, V. Ravi; Dileep, B. P.; Vital, H.R.

doi:10.1063/1.4990173

Cited by 13 publications

(2 citation statements)

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“…Wear is a phenomenon of removal/erosion from the surfaces of two contact bodies' in-relative motion to each other. The wear tests were conducted according to ASTM G99 standards by using Pin-on-disc wear testing machine [12,5]. The duration of each test was exactly 60 minutes to identify the amount of material lost during the test.…”

Section: Methodsmentioning

confidence: 99%

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Mechanical and tribological characterization nitrided Al-7075/Al2O3 metal matrix composites

Vitala²

2018

PEN

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This research is mainly intended to evaluate the effect of nitriding on the wear behaviour of Al 2 O 3 reinforced aluminium-7075 metal matrix composite materials. The composites were prepared by using powder metallurgy process. The amount of Al 2 O 3 in these composites was varied from 3% to 7% (by weight) in steps of 2%. Homogeneously mixed powder by using double cone mixture was compacted using hydraulic press with 60KN of load. The compaction load was optimized to get a equal density as base specimens,then the compacted specimens were sintered at 540 0 C which is 80% of melting temperature aluminium base alloy. The sintered materials were nitrided with a temperature of 520°C for 72hrs. Two different set of specimens, namely, nitrided composites and non-nitrided composites specimens were tested for their wear resistance and hardness properties. Pinon-disc equipment was used for wear testing and microhardness testing machine was used for hardness testing. Elemental X-Ray Diffraction technique (XRD) was used to ensure the diffusion of nitrogen to the surface of composites. After all the standard tests it was observed that the nitrided composites have shown better wear resistance than the non-nitrided composites.

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Section: Methodsmentioning

confidence: 99%

“…This can be achieved by implanting aluminium nitride (AIN) on the surface of the material to get better tribological properties along with high thermal and chemical stability [2]. Nitriding is one among the best available methods which used for surface modification [5].…”

Section: Introductionmentioning

confidence: 99%