Influence of Cr content on microstructure and oxidation behavior of modified Mo-Si-B composite coatings

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-05-05 DOI:10.1016/j.corsci.2025.113011

Beibei Xu, Xiping Guo, Yanqiang Qiao

引用次数: 0

Abstract

Cr-modified Mo-Si-B composite coatings were prepared on Nb-Si based alloy by slurry sintering. The effects of Cr contents (0, 5, 10 and 15 wt%) on the microstructure and oxidation behavior of Mo-Si-B coatings were revealed. The addition of high Cr content improved compactness, and the coating evolved from a bilayer to a trilayer. The 10Cr coating exhibited the best oxidation resistance for oxidation at 1380 ℃ for 100 h, which was mainly because the formed oxide scale embedded with CrNbO₄ and TiNbO₄ had lower stresses, lower oxygen permeability and better integrity, thus effectively inhibiting the inward diffusion of oxygen.

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Cr含量对改性Mo-Si-B复合镀层组织及氧化行为的影响

采用浆料烧结技术在铌硅基合金上制备了cr改性Mo-Si-B复合镀层。研究了Cr含量（0、5、10和15 wt%）对Mo-Si-B涂层组织和氧化行为的影响。高铬含量的加入提高了涂层的致密性，涂层由双层结构演变为三层结构。10Cr涂层在1380℃、100 h的氧化条件下表现出最好的抗氧化性能，这主要是因为包埋CrNbO4和TiNbO4形成的氧化膜具有较低的应力、较低的透氧性和较好的完整性，从而有效地抑制了氧向内扩散。

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

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.