Comparison of tribological properties and structure of coatings produced in powder flame spraying process on grey cast iron

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Artur Czupryński
Marcin Adamiak
Emin Bayraktar
Bernard Wyględacz

Abstract




In this article results of tribological and structural properties comparison of flame sprayed, by SupJet-S-Eutalloy® multipurpose system, two self-fluxing alloys of Ni-B-Si type in the form of powder for spraying with remelting are presented. Layers were produced on EN-GJL-250 grade grey cast iron with flake graphite in an austenitic matrix. Abrasive wear resistance examination acc. to ASTM G65-00 and erosive wear resistance examination acc. to ASTM G76-2 were performed. Obtained results were compared with abrasion-resistant steel Hardox® 400. Macro- and microscopic examination were carried enabling layer quality evaluation and structure of examined layer and base material determination. X-ray microanalysis was performed to obtain qualitative and quantitative data about microareas chemical composition. The Eutalloy® BronzoChrom 10185 powder flame sprayed layer with higher Boron and Silicon content was characterized by 13% lower wear intensity under mineral abrasive conditions and about 30% higher erosion wear resistance than Eutalloy® NiTec 10224 powder flame sprayed layer.




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[1]
A. Czupryński, M. Adamiak, E. Bayraktar, and B. Wyględacz, “Comparison of tribological properties and structure of coatings produced in powder flame spraying process on grey cast iron”, Weld. Tech. Rev., vol. 92, no. 3, pp. 7-21, May 2020.
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