Tracing the early oxidation of Ni-based superalloys during hot-compression bonding

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-03-07 DOI:10.1016/j.vacuum.2025.114237

Shaofei Ren , Xiaolong Bai , Sheng Liu , Bin Xu , Mingyue Sun

引用次数: 0

Abstract

The room-temperature oxidation behavior of Ni-based single-crystal superalloys is studied by controlling the oxygen content. The results show that Zr oxides are first formed on the surface and sides of atomic steps during the early stage of oxidation. As the oxygen content increases, the number of Al oxide particles gradually increases. The results of STM show that Al and Zr diffuse along the step surface and perpendicular to the step surface in two directions. With further increase in oxygen content, Zr and Al are continuously consumed, leading to the formation of Cr₂O₃. The results of STM show a gradual increase in the height and width of the Cr₂O₃ oxides. These oxides gradually form clusters due to continuous diffusing along and perpendicular to atomic step surfaces.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.