PtAl涂层与高级ni3al基单晶高温合金之间连续重基层的抗氧化和抑制扩散效果

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-01-31 DOI:10.1016/j.jallcom.2025.178581

Jingchen Li , Jian He , Peng Ru , Hongbo Guo

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引用次数: 0

摘要

通过多层电镀和气相渗铝，在PtAl涂层和高温合金基体之间制备了一层连续的重基层作为扩散屏障。通过与普通PtAl涂层的对比，研究了含DB涂层（PtAl-DB涂层）在1150℃下的等温氧化行为。结果表明：PtAl-DB涂层提高了保护氧化膜的结合强度，减缓了涂层与基体之间的互扩散；此外，通过热力学动力学模型探讨了DB对PtAl涂层氧化和扩散性能的影响机理。

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Oxidation resistance and diffusion inhibiting effect of continuous Re-base layer between PtAl coating and advanced Ni3Al-base single crystal superalloy

A continuous Re-base layer was prepared between the PtAl coating and superalloy substrate as a diffusion barrier (DB) via multilayer electroplating and gaseous aluminizing. The isothermal oxidation behavior of the coating with DB (PtAl-DB coating) was investigated at 1150 °C by comparing it with a normal PtAl coating. The results demonstrated that the PtAl-DB coating exhibited improved bonding strength of the protective oxide film and mitigated inter-diffusion between the coating and the substrate. Additionally, the mechanisms of DB effects on the oxidation and inter-diffusion performance of the PtAl coating were discussed according to thermodynamic-kinetics modeling.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.