Comparative Study of High-Chromium Cast Iron Coatings Modified with WС-W2C/Co+B4С+Ni/Al Complexes and Cr3C2/PG-US25 Ceramet

Shchegolev, A. V.; Ишков, А. В.; Ivanaysky, Victor V.

doi:10.4028/www.scientific.net/ssp.299.818

Cited by 1 publication

(1 citation statement)

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“…To mitigate the monetary and energy loss encountered during the operation, researchers are constantly seeking to understand the wear mechanisms and subsequently, improve the material in use [3,4]. In addition to employing new materials apt for wear-related applications, existing materials can be microstructurally modified, or coated with a suitably wear resistant material such as high chromium cast iron (HCCI) to increase their longevity [5].…”

Section: Introductionmentioning

confidence: 99%

Development of a Protective Coating for Evaluating the Sub-surface Microstructure of a Worn Material

et al. 2021

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In the current study, electrolytic deposition using two different electrodes, copper (Cu) and nickel (Ni) was investigated with the aim of protecting the worn surface during mechanical sectioning and polishing, for a posterior examination of the sub-surface microstructure. The efficacies of the two coatings were visually assessed based on its adhesivity and the ability to protect the wear tracks of an as-cast 26% Cr high chromium cast iron (HCCI) alloy. It was observed that electrodeposition using Cu as the electrode was ineffective owing to a poor adhesivity of the coating on the HCCI surface. The coating had peeled off at several regions across the cross-section during the mechanical sectioning. On the other hand, Ni electroplating using Ni strike as the electrolyte was successfully able to protect the wear track, and the sub-surface characteristics of the wear track could be clearly visualized. A uniform coating thickness of about 8 µm was deposited after 30–40 min with the current density maintained between 1 and 5 A/dm2. The presence of the Ni coating also acted as a protective barrier preventing the ejection of the broken carbide fragments underneath the wear track.

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Section: Introductionmentioning

confidence: 99%