Ke Zhang, Jun Xie, Jinhua Liu, Bing Yao, Chaowen Zhu, Haibing Guo, Xiaosong Zhou, Wenzeng Bing, Xiaochun Han
{"title":"Al 和 Zr 合金对高温氧环境中 Cr 氧化行为的影响","authors":"Ke Zhang, Jun Xie, Jinhua Liu, Bing Yao, Chaowen Zhu, Haibing Guo, Xiaosong Zhou, Wenzeng Bing, Xiaochun Han","doi":"10.1016/j.jallcom.2024.177768","DOIUrl":null,"url":null,"abstract":"A series of CrAl and CrAlZr alloy blocks with different Cr/Al ratios were prepared by powder metallurgy method. The alloys were oxidized at 800℃ for 30<!-- --> <!-- -->hours. Results showed that a compact oxide layer was formed on the surface of CrAl alloy, showing good oxidation resistance. However, the introduction of Zr act as a fast diffusion path for oxygen, where the underlying alloy was oxidized seriously. The experiment has demonstrated that the formation of ZrO<sub>2</sub> undermines the completeness of the compact Cr<sub>2</sub>O<sub>3</sub> and Al<sub>2</sub>O<sub>3</sub> oxide layer, which is the dominate factor for the failure of the CrAl alloy.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"8 1","pages":""},"PeriodicalIF":5.8000,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Al and Zr alloying on the oxidation behaviors of Cr in high temperature oxygen environment\",\"authors\":\"Ke Zhang, Jun Xie, Jinhua Liu, Bing Yao, Chaowen Zhu, Haibing Guo, Xiaosong Zhou, Wenzeng Bing, Xiaochun Han\",\"doi\":\"10.1016/j.jallcom.2024.177768\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A series of CrAl and CrAlZr alloy blocks with different Cr/Al ratios were prepared by powder metallurgy method. The alloys were oxidized at 800℃ for 30<!-- --> <!-- -->hours. Results showed that a compact oxide layer was formed on the surface of CrAl alloy, showing good oxidation resistance. However, the introduction of Zr act as a fast diffusion path for oxygen, where the underlying alloy was oxidized seriously. The experiment has demonstrated that the formation of ZrO<sub>2</sub> undermines the completeness of the compact Cr<sub>2</sub>O<sub>3</sub> and Al<sub>2</sub>O<sub>3</sub> oxide layer, which is the dominate factor for the failure of the CrAl alloy.\",\"PeriodicalId\":344,\"journal\":{\"name\":\"Journal of Alloys and Compounds\",\"volume\":\"8 1\",\"pages\":\"\"},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-11-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Alloys and Compounds\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.jallcom.2024.177768\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jallcom.2024.177768","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effect of Al and Zr alloying on the oxidation behaviors of Cr in high temperature oxygen environment
A series of CrAl and CrAlZr alloy blocks with different Cr/Al ratios were prepared by powder metallurgy method. The alloys were oxidized at 800℃ for 30 hours. Results showed that a compact oxide layer was formed on the surface of CrAl alloy, showing good oxidation resistance. However, the introduction of Zr act as a fast diffusion path for oxygen, where the underlying alloy was oxidized seriously. The experiment has demonstrated that the formation of ZrO2 undermines the completeness of the compact Cr2O3 and Al2O3 oxide layer, which is the dominate factor for the failure of the CrAl alloy.
期刊介绍：
The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.
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