Microstructure evolution and HT molten chloride salts corrosion performance of novel NiAl/Al/Si-NiAl multilayer coatings for CSP application

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2024-10-28 DOI:10.1016/j.matlet.2024.137623

Shipeng Xu , Yuehong Zheng , Faqi Zhan , Peiqing La

引用次数: 0

Abstract

The microstructure and resistance to high-temperatures molten chloride salt corrosion of NiAl/Al/Si-NiAl coating was investigated. The pre-oxidation integrates NiAl/Al/Si-NiAl multilayer coating into a unified structure, resulting in the formation of a continuous dense oxide layer. During corrosion process, the oxide layer initially grows and thickens, then reaches a stable state, and finally becomes thinner. The mass change remained at approximately −2.5 ± 0.2 mg/cm² after 162 h of corrosion. The structural design of the multi-layer coating further increases the thickness of the Al₂O₃ layer and strengthens the coating’s resistance corrosion. This fully utilizes the role of the pure Al layer as Al source and also takes advantage of Si addition to promote the formation of Al₂O₃ layer and hinder the diffusion of Cr.

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用于 CSP 应用的新型 NiAl/Al/Si-NiAl 多层涂层的微观结构演化和高温熔融氯盐腐蚀性能

研究了 NiAl/Al/Si-NiAl 涂层的微观结构和抗高温熔融氯盐腐蚀性能。预氧化将 NiAl/Al/Si-NiAl 多层涂层整合成一个统一的结构，从而形成连续致密的氧化层。在腐蚀过程中，氧化层最初变大变厚，然后达到稳定状态，最后变薄。腐蚀 162 h 后，质量变化保持在约 -2.5 ± 0.2 mg/cm2 的水平。多层涂层的结构设计进一步增加了 Al2O3 层的厚度，增强了涂层的抗腐蚀能力。这充分发挥了纯 Al 层作为 Al 源的作用，同时也利用了添加 Si 的优势，促进了 Al2O3 层的形成，阻碍了 Cr 的扩散。

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

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive