{"title":"Influence of Substrate Surface Quality on Electro-Spark Alloying","authors":"A. A. Burkov, A. Yu. Bytsura","doi":"10.3103/s1068375524020030","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Deposition of protective coatings improves the corrosion resistance and tribological behavior of the surfaces of metallic components. However, surface preparation prior to coating application increases the cost per unit area of the coating. Substrates made of St3 steel with surface roughness <i>R</i><sub><i>a</i></sub> ranging from 0.01 to 0.597 μm were prepared, including those with a layer of rust, and were subjected to electro-spark deposition of Cr–Fe–Cu coatings. The performed studies led to the conclusion that the initial surface roughness of St3 steel does not affect the nature of material deposition during the electro-spark alloying (ESA) and the structure of the deposited coatings. This is unequivocally confirmed by the data on heat resistance and tribological properties of the coatings. Electro-spark treatment can promote self-cleaning of the rust layer; however, complete elimination is not achieved, and large pores are formed in the coating. This significantly reduces the heat resistance and wear resistance of the coating.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface Engineering and Applied Electrochemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3103/s1068375524020030","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
Deposition of protective coatings improves the corrosion resistance and tribological behavior of the surfaces of metallic components. However, surface preparation prior to coating application increases the cost per unit area of the coating. Substrates made of St3 steel with surface roughness Ra ranging from 0.01 to 0.597 μm were prepared, including those with a layer of rust, and were subjected to electro-spark deposition of Cr–Fe–Cu coatings. The performed studies led to the conclusion that the initial surface roughness of St3 steel does not affect the nature of material deposition during the electro-spark alloying (ESA) and the structure of the deposited coatings. This is unequivocally confirmed by the data on heat resistance and tribological properties of the coatings. Electro-spark treatment can promote self-cleaning of the rust layer; however, complete elimination is not achieved, and large pores are formed in the coating. This significantly reduces the heat resistance and wear resistance of the coating.
期刊介绍：
Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.
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