Weiping Zhang , Yanqiang Qiao , Xiping Guo , Longfei Li , Xi Nan
{"title":"Excellent oxidation resistance: A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating on Nb-Si based alloy","authors":"Weiping Zhang , Yanqiang Qiao , Xiping Guo , Longfei Li , Xi Nan","doi":"10.1016/j.corsci.2025.112863","DOIUrl":null,"url":null,"abstract":"<div><div>A dense and well-bonded MoSi<sub>2</sub>/(Nb,X)Si<sub>2</sub> composite coating was developed on Nb-Si based alloy by the combination of Si pack cementation with pre-oxidation and then Mo-Si slurry sintering. The formation of a SiO<sub>2</sub> scale with proper thickness by pre-oxidation on (Nb,X)Si<sub>2</sub> layer, can significantly improve the interface bonding between MoSi<sub>2</sub> layer and (Nb,X)Si<sub>2</sub> layer, as well as the compactness of MoSi<sub>2</sub> layer. The MoSi<sub>2</sub>/(Nb,X)Si<sub>2</sub> composite coating exhibits excellent oxidation resistance at 1250 ℃ and 1350 ℃, which can be attributed to the dense structure of MoSi<sub>2</sub> layer, the sufficient Si source from (Nb,X)Si<sub>2</sub> layer and the good interfacial bonding.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"249 ","pages":"Article 112863"},"PeriodicalIF":7.4000,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25001908","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating was developed on Nb-Si based alloy by the combination of Si pack cementation with pre-oxidation and then Mo-Si slurry sintering. The formation of a SiO2 scale with proper thickness by pre-oxidation on (Nb,X)Si2 layer, can significantly improve the interface bonding between MoSi2 layer and (Nb,X)Si2 layer, as well as the compactness of MoSi2 layer. The MoSi2/(Nb,X)Si2 composite coating exhibits excellent oxidation resistance at 1250 ℃ and 1350 ℃, which can be attributed to the dense structure of MoSi2 layer, the sufficient Si source from (Nb,X)Si2 layer and the good interfacial bonding.
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.
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