Synergistic effects of Pt and Y addition in (Ni, Pt)CrAlY bond coat on oxide spallation resistance and growth of interdiffusion zone between bond coat and Ni-based single crystal superalloy

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-09-27 DOI:10.1016/j.corsci.2024.112485

Ujjval Bansal , Neelamegan Esakkiraja , Thangaraj Baskaran , Tanaji Paul , Raju Ravi , Praveen Kumar , Vikram Jayaram , Aloke Paul

引用次数: 0

Abstract

This study shows the beneficial effect of Pt addition to the (β+γ)-NiCrAlY coating. Adding Y in NiCrAl increases oxide growth kinetics but improves spallation resistance. Pt with Y does not change the oxidation rate compared to only adding Y but significantly reduces spallation when cooled to room temperature. Continuous layers of Al₂O₃ and Cr₂O₃, along with other oxides such as YAlO₃, NiCr₂O₄, and NiAl₂O_4, are observed. Moreover, Pt addition reduces the thickness of the interdiffusion zone where Al goes through an uphill diffusion profile, minimizing Al loss and significantly decreasing the growth of deleterious TCP phases.

查看原文本刊更多论文

在（镍、铂）CrAlY 键合涂层中添加铂和钇对氧化物抗剥落性以及键合涂层与镍基单晶超合金之间互渗区生长的协同效应

这项研究显示了在 (β+γ)-NiCrAlY 涂层中添加铂的有益效果。在镍铬铝中添加 Y 会增加氧化物的生长动力学，但会提高抗剥落性。与只添加 Y 相比，添加 Y 的 Pt 不会改变氧化率，但在冷却到室温时会显著减少剥落。可观察到连续的 Al2O3 和 Cr2O3 层以及其他氧化物，如 YAlO3、NiCr2O4 和 NiAl2O4。此外，铂的加入还减少了相互扩散区的厚度，在这一区域中，铝通过上坡扩散，从而最大限度地减少了铝的损失，并显著降低了有害 TCP 相的生长。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.