Ni3Al基高温合金表面Pt/Ru改性Ni–30Al–0.3Dy涂层的互扩散和氧化行为

IF 2.4 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Surface Engineering Pub Date : 2022-12-02 DOI:10.1080/02670844.2023.2182846

Liang Liu, Jian He, Lulu Pan, Xuezhen Cao

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引用次数: 0

摘要

在形成铝的Ni-30Al-0.3Dy涂层和ni3al基单晶高温合金之间故意沉积了高纯的Ru或Pt。结果表明，Ru改性Ni-30Al-0.3Dy涂层有效抑制了涂层与基体之间的相互扩散，抑制了拓扑紧密堆积相(TCP)的析出，从而影响了合金的力学性能。1100℃退火和氧化实验表明，与Pt不同，Ru限制了Al从涂层向基体的内扩散，从而阻碍了Al的互扩散。而Ru层的存在可以同时提高涂层的抗氧化性。

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Interdiffusion and oxidation behaviour of Pt/Ru modified Ni–30Al–0.3Dy coating on Ni3Al-based superalloy

ABSTRACT A high purity of Ru or Pt was deliberately deposited as a middle layer between an alumina-forming Ni–30Al–0.3Dy coating and a Ni3Al-based single-crystal superalloy. It was found that the Ru modified Ni–30Al–0.3Dy coating effectively suppressed the interdiffusion between the coating and the substrate and inhibited the precipitation of topologically close-packed (TCP) phases which impaired the mechanical properties of the superalloy. The 1100°C annealing and oxidation tests suggested that, different from Pt, Ru restricted the inward diffusion of Al from the coating to the substrate, thereby hindering the interdiffusion. And the existence of Ru layer can simultaneously improve the oxidation resistance of the coating.

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来源期刊

Surface Engineering 工程技术-材料科学：膜

CiteScore

5.60

自引率

14.30%

发文量

审稿时长

2.3 months

期刊介绍： Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.