Long-term corrosion of austenitic steels in flowing LBE at 400 °C and 10-7 mass% dissolved oxygen in comparison with 450 and 550 °C
Long-term corrosion of austenitic steels in flowing LBE at 400 °C and 10-7 mass% dissolved oxygen in comparison with 450 and 550 °C
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DOI：
10.1016/j.jnucmat.2015.09.027
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发表时间：
2016-01-01
影响因子：
3.1
通讯作者：
Konys, Juergen
中科院分区：
文献类型：
--
作者：
Tsisar, Valentyn;Schroer, Carsten;Konys, Juergen
对1.4970 （15-15 Ti）、316L和1.4571奥氏体钢进行了长达13194小时的长期腐蚀试验，温度为400℃，溶解氧质量为10(-7)%，流动LBE （2m /s）。钢表现出一般轻微的氧化（cr基氧化膜）以及局部的坑型溶液腐蚀。坑型腐蚀的潜伏期约为4500 h，在13194 h后，分别为1.4970、316L和1.4571时，观察到的最大坑深约为14、23和57 μ m，对应的局部腐蚀速率约为6、10和26 μ m/年。在450℃和550℃下，腐蚀速率分别在120-220 μ m/年和500-3000 μ m/年之间。讨论了腐蚀现象和机理。(c) 2015 Elsevier B.V.版权所有
Long-term corrosion tests for up to similar to 13,194 h on 1.4970 (15-15 Ti), 316L and 1.4571 austenitic steels were carried out at 400 degrees C in flowing LBE (2 m/s) with 10(-7) mass% dissolved oxygen. The steels show general slight oxidation (Cr-based oxide film) along with local, pit-type solution-based corrosion attack. The incubation time for pit-type attack is similar to 4500 h. After similar to 13,194 h, the maximum pit depth observed was similar to 14, 23 and 57 mu m for 1.4970, 316L and 1.4571, respectively, that corresponds to local corrosion rates of similar to 6, 10 and 26 mu m/year. At 450 degrees C and 550 degrees C, the corrosion rates are ranged in between similar to 120-220 mu m/year and similar to 500-3000 mu m/year, respectively. Corrosion appearances and mechanisms are discussed. (c) 2015 Elsevier B.V. All rights reserved.