2002
DOI: 10.1007/s11661-002-0278-z
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Correlation of microstructure and wear resistance of ferrous coatings fabricated by atmospheric plasma spraying

Abstract: The correlation of microstructure and wear resistance in ferrous coatings applicable to diesel engine cylinder bores was investigated in this study. Seven kinds of ferrous spray powders, two of which were stainless steel powders and the others blend powders of ferrous powders mixed with Al 2 O 3 -ZrO 2 powders, were sprayed on a low-carbon steel substrate by atmospheric plasma spraying. Microstructural analysis of the ferrous coatings showed that various Fe oxides such as FeO, Fe 2 O 3 , and ␥ -Fe 2 O 3 were f… Show more

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Cited by 30 publications
(21 citation statements)
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“…[24][25][26][27][28] In order to reliably evaluate the wear resistance of the CNT/Al 2 O 3 composites fabricated in the present study, the hardness, microstructure, fracture toughness, and wear mechanism should be essentially understood.…”
Section: Discussionmentioning
confidence: 99%
“…[24][25][26][27][28] In order to reliably evaluate the wear resistance of the CNT/Al 2 O 3 composites fabricated in the present study, the hardness, microstructure, fracture toughness, and wear mechanism should be essentially understood.…”
Section: Discussionmentioning
confidence: 99%
“…4b and c. In boat coatings, elongated splats of molten powder form a curved lamellar structure, with oxide layers in between, which is typical for spray coatings [24][25][26][27]. No cracking was found in the coatings and no peeling was observed at the interface between the coating and the substrate.…”
Section: Microstructuresmentioning
confidence: 99%
“…High presence of oxides in the coatings had influence on their wear values. Oxides are harder than Fe splats (matrix) and when the difference is too large, cracks are initiated at oxides and at oxides/matrix interfaces (preexisting pores and cracks play a similar role), and parts of oxides are fallen off as wear proceeds, causing large protuberances on the worn surface [25,32]. Low fracture toughness of the interfacial oxide could also cause splat delamination upon frictional contact [33].…”
Section: Pin-on-disc Testingmentioning
confidence: 99%
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“…Thermally sprayed cast iron coatings containing graphite structure are anticipated to improve the wear resistance of aluminum alloys which have poor tribological properties. [4][5][6] Coatings sprayed with water-atomized cast iron powder which is less expensive than gas-atomized powder, exhibit superior wear resistance arising from graphite structure embedded in hard matrix. 7) However, the precipitation of graphitized carbon distributed throughout ferrous coatings is not a quite simple process due to the rapid solidification of flattened splats.…”
Section: Introductionmentioning
confidence: 99%