Corrosion behavior of alumina-forming and oxide dispersion strengthened austenitic 316 stainless steel in supercritical water

Corrosion behavior of alumina-forming and oxide dispersion strengthened austenitic 316 stainless steel in supercritical water
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氧化铝和氧化物弥散强化奥氏体316不锈钢在超临界水中的腐蚀行为

DOI:
10.1016/j.corsci.2018.04.026
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发表时间:
2018-07
期刊:
影响因子:
8.3
通讯作者:
Zhang Lefu
Zhang Lefu
中科院分区:
材料科学1区
文献类型:
--
作者:
Guo Xianglong;Chen Kai;Gao Wenhua;Shen Zhao;Zhang Lefu

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研究了氧化铝型奥氏体(AFA)316不锈钢(SS)和氧化物弥散强化(ODS)316不锈钢(SS)在650 °C/25 MPa超临界水中的腐蚀行为。结果表明,AFA和ODS 316 SS的增重曲线均符合近抛物线规律。AFA和ODS 316不锈钢在SCW中的耐蚀性均高于普通316不锈钢,这是由于AFA和ODS 316不锈钢表面分别形成了富Al-Cr氧化物和富Cr氧化物层。讨论了AFA和ODS 316不锈钢的腐蚀过程和机理.
The corrosion behavior of alumina-forming austenitic (AFA) 316 stainless steel (SS) and oxide dispersion strengthened (ODS) 316 SS in aerated supercritical water (SCW) at 650 °C/25 MPa was investigated. The results show that the weight gain curves of AFA and ODS 316 SS follow near-parabolic law. Both AFA and ODS 316 SS show higher corrosion resistance in SCW than normal 316 SS, which is because that Al-Cr rich oxide and Cr-rich oxide layer are formed on AFA and ODS 316 SS, respectively. The corrosion process and mechanism of AFA and ODS 316 SS are discussed.
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