Microstructure and oxidation resistance of Pd+Zr and Pd+Hf co-doped aluminide coatings deposited on Mar-M247 nickel superalloy

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Journal of Mining and Metallurgy Section B-Metallurgy Pub Date : 2023-01-01 DOI:10.2298/jmmb221205021r

J. Romanowska, M. Zagula-Yavorska

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.

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Mar-M247镍高温合金表面Pd+Zr和Pd+Hf共掺铝化物涂层的显微组织和抗氧化性能

采用电镀钯-锆-渗铝或渗铪-渗铝工艺，在Mar-M247镍高温合金表面制备了Pd+Zr和Pd+Hf共掺铝化物涂层。两种镀层均由两个区组成，即-(Ni,Pd)Al相的外层区和互扩散区。铪和锆形成包裹体，在区域边缘和靠近表面处析出(仅在Zr+Pd改性涂层中)。Pd+Zr共掺铝化物涂层的抗氧化性能明显优于Pd+Hf共掺铝化物涂层。Pd+Hf共掺杂涂层中的铪含量会超过边界值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mining and Metallurgy Section B-Metallurgy 工程技术-冶金工程

CiteScore

2.00

自引率

40.00%

发文量

审稿时长

2 months

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.