A new insight into high-temperature oxidation mechanism of super-austenitic stainless steel S32654 in air
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- 作者：Huabing Lia ; huabing_li@163.com" class="auth_mail" title="E-mail the corresponding author ; Binbin Zhanga ; Zhouhua Jianga ; jiangzh@smm.neu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Shucai Zhanga ; Hao Fenga ; Peide Hanb ; Nan Dongb ; Wei Zhangc ; Guoping Lic ; Guangwei Fanc ; Qizeng Linc
- 关键词：Super-austenitic stainless steel ; High-temperature oxidation ; MoO3 ; Cr2N ; Synergistic effects
- 刊名：Journal of Alloys and Compounds
- 出版年：2016
- 出版时间：25 November 2016
- 年：2016
- 卷：686
- 期：Complete
- 页码：326-338
- 全文大小：7710 K
文摘
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High temperature oxidation behavior and mechanisms for S32654 were examined in air.
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The molten MnMoO4-MoO3 molybdate violently damages the protective oxide layer.
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Nitrogen in air plays an important role in accelerating oxidation above 1000 °C.
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The lamellar Cr2N can provide short-circuit paths for Mo, Mn, O and N diffusion.
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The synergism of MnMoO4-MoO3 and discontinuous Cr2N promotes catastrophic oxidation.