Oxidation behaviors of Fe-25Cr-20Ni-χNb austenitic weld metals at 1100 °C in ambient air: Role of elemental niobium
发布时间:2019-10-09点击次数:
- 影响因子:7.4
- DOI码:10.1016/j.corsci.2019.108137
- 所属单位:中国科学院金属研究所
- 教研室:0
- 发表刊物:Corrosion Science
- 刊物所在地:英国
- 项目来源:中国科学院重点研究计划
- 关键字:A. Austenitic weld metal; B. SEM; B. XRD; C. High temperature corrosion; C. Oxidation
- 摘要:The isothermal oxidation behaviors of the Fe-25Cr-20Ni-χNb (0–1.6 wt.%) weld metals have been investigated in air at 1100 °C. Results showed that niobium has a detrimental effect on the elevated temperature oxidation resistance of the chromia-forming weld metals. In the Nb content range studied, the Nb content of 1.6 wt.% showed the most deleterious effect on the chromia layer. Niobium promoted the chromium depletion underneath the oxide/matrix interface by impeding the chromium diffusion, which ruined the compactness of the chromia layer. The oxidation of niobium at the oxide layer/metal interface can further cause severe damage to the chromia layer, resulting in catastrophic oxide spallation.
- 备注:0
- 论文类型:研究论文
- 论文编号:108137
- 学科门类:工学
- 卷号:159
- 是否译文:否
- 发表时间:2019-01-01
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- 性别:男
- 职称:副教授
- 学历:研究生
- 学位:博士
- 所在单位:材料科学与工程学院
- 学科: 材料加工工程
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