Study on dry sliding wear characteristics of air plasma spraying deposited CoNiCrAlY intermetallic coatings on aluminium alloy substrate

Kumara, D. Vinaya; Pandey, Kavita

doi:10.1504/ijsurfse.2016.077000

Cited by 5 publications

(1 citation statement)

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“…Here the wear takes place by ploughing mechanism, where the ploughing lips are clearly visible for the lower load at 5 N, with the increase in the load, the more friction generated forms α-Al2O3 on the surface and resists the wear. A similar phenomenon was observed by the earlier researcher also [31]. The severe deformation did not happen for this case and the top coat and bond coat are visible in the images.…”

Section: Overall Discussionsupporting

confidence: 89%

Studies on Plasma Sprayed Thermal Barrier Coating with Increase in Coating Thickness

Nayak¹,

Krishnamurthy²,

Shailesh³

2018

Tribol. Ind.

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In this study, the nature of performance test like a bond test, wear test and hot corrosion test and its effects on plasma sprayed Yttriastabilized zirconia and Al2O3 composite (50:50 compositions) coating on Aluminium 6061 substrate are carried out. The three topcoat thicknesses of 100µm, 200µm, and 300µm are used for the studies. In case of hot corrosion test, the substrates were spread by molten salt (55wt.% V2O5+45wt.%Na2SO4) which is kept in the furnace at 350 °C for 40 hours. The properties changed for the different bond thickness where for 200 µm wear properties become optimal and 300 µm the corrosion test remains optimal. There is an improvement in the bond strength and its optimal value is obtained for 100 µm topcoat thickness. The physics behind all three experiments are explained in this paper.

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Section: Overall Discussionsupporting

confidence: 89%