{"title":"Microstructure and oxidation resistance of Pd+Zr and Pd+Hf co-doped aluminide coatings deposited on Mar-M247 nickel superalloy","authors":"J. Romanowska, M. Zagula-Yavorska","doi":"10.2298/jmmb221205021r","DOIUrl":null,"url":null,"abstract":"Pd+Zr and Pd+Hf co-doped aluminide coatings were deposited on the Mar-M247 nickel superalloy by the palladium electroplating followed by zirconizing-aluminizing or hafnizing-aluminizing processes. Both coatings consisted of two zones, the outer and the interdiffusion one build of the ?-(Ni,Pd)Al phase. Hafnium and zirconium formed inclusions that precipitated at the border of the zones and close to the surface (only in the Zr+Pd modified coating). Oxidation resistance of the Pd+Zr co-doped aluminide coating was significantly better than the Pd+Hf co-doped one. Hafnium content in the Pd+Hf co-doped coating could exceed the border value.","PeriodicalId":51090,"journal":{"name":"Journal of Mining and Metallurgy Section B-Metallurgy","volume":"18 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Mining and Metallurgy Section B-Metallurgy","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.2298/jmmb221205021r","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
Pd+Zr and Pd+Hf co-doped aluminide coatings were deposited on the Mar-M247 nickel superalloy by the palladium electroplating followed by zirconizing-aluminizing or hafnizing-aluminizing processes. Both coatings consisted of two zones, the outer and the interdiffusion one build of the ?-(Ni,Pd)Al phase. Hafnium and zirconium formed inclusions that precipitated at the border of the zones and close to the surface (only in the Zr+Pd modified coating). Oxidation resistance of the Pd+Zr co-doped aluminide coating was significantly better than the Pd+Hf co-doped one. Hafnium content in the Pd+Hf co-doped coating could exceed the border value.
期刊介绍：
University of Belgrade, Technical Faculty in Bor, has been publishing the journal called Journal of Mining and Metallurgy since 1965 and in 1997 it was divided in two independent journals dealing with mining and metallurgy separately. Since 2009 Journal of Mining and Metallurgy, Section B: Metallurgy has been accepted in Science Citation Index Expanded.
Journal of Mining and Metallurgy, Section B: Metallurgy presents an international medium for the publication of contributions on original research which reflect the new progresses in theory and practice of metallurgy. The Journal covers the latest research in all aspects of metallurgy including hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, solidification, mechanical working, solid state reactions, materials processing, surface treatment and relationships among processing, structure, and properties of materials.
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