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Preparation and cyclic oxidation behavior of Pt-modified Ni3Al-based coatings: Effects of Al/Pt content and vacuum annealing time

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-09-22 DOI:10.1016/j.surfcoat.2025.132725

Dongliang Xue , Shuai Li , Yiming Jiang , Jiahao Wu , Caiyun Zhang , Zebin Bao , Shenglong Zhu , Fuhui Wang

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引用次数: 0

Abstract

This work proposes an option for preparing Pt-modified Ni₃Al-based coating and systematically investigates the effects of deposition parameters on microstructural evolution and phase composition. Compared with conventional β-(Ni,Pt)Al coating, the Pt-modified Ni₃Al-based coatings significantly refrain elements from interdiffusion and inhibit precipitation of topologically close-packed phases (TCP). The cyclic oxidation test at 1100 °C demonstrates that the single-phase Pt-modified Ni₃Al coatings possess superior high-temperature performance, attributing to their lower oxidation rate and insignificant oxide scale rumpling extent. Moreover, the formation of orthorhombic Ni₅Al₃ phase has been identified in the Pt-modified Ni₃Al-based coatings when Al content is excessive, which is consistent with the transmission electron microscopy (TEM) analysis. As seldom reported, the detrimental effects of Ni₅Al₃ precipitates on oxidation resistance are particularly discussed. These findings provide informative ideas for strategies optimizing the microstructure of high-performance Ni₃Al-based coatings.

查看原文本刊更多论文

Pt改性ni3al基涂层的制备及其循环氧化行为：Al/Pt含量和真空退火时间的影响

本研究提出了一种制备pt改性ni3al基涂层的方法，并系统地研究了沉积参数对微观组织演变和相组成的影响。与传统的β-(Ni,Pt)Al涂层相比，Pt修饰的ni3al基涂层明显抑制了元素的相互扩散，抑制了拓扑紧密堆积相（TCP）的析出。1100℃循环氧化试验表明，单相pt改性Ni3Al涂层具有较低的氧化速率和较小的氧化垢皱褶程度，具有较好的高温性能。此外，当Al含量过高时，在pt修饰的ni3al基涂层中发现了正交Ni5Al3相的形成，这与透射电镜（TEM）分析一致。本文特别讨论了Ni5Al3析出物对抗氧化性能的不利影响。这些发现为优化高性能ni3al基涂层的微观结构提供了有益的思路。

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

Surface & Coatings Technology

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.

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