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Analysis of Surface Oxide Films Formed in Hydrogenated Primary Water on Alloy 690TT Samples With Different Surface States
Z. M.; Wang Zhang, J. Q.; Han, E. H.; Ke, W.
2014
Source PublicationJournal of Materials Science & Technology
ISSN1005-0302
Volume30Issue:12Pages:1181-1192
AbstractOxidation of Alloy 690TT samples either manually ground to 400 and 1500 grit, mechanically polished, or electropolished was performed in a solution of 1500 x 10(-6) B and 2.3 x 10(-6) Li with 2.5 x 10(-6) dissolved H-2, at 325 degrees C and 15.6 MPa for 60 days. The oxide films grown on samples with different surface states were analyzed using various techniques. Results show that a triple-layered structure was formed after immersion: an outermost layer with large scattered oxide particles rich in Fe and Ni, an intermediate layer with small compact oxide particles rich in Cr and Fe for the ground surfaces and loose needle-like oxides rich in Ni for the polished surfaces, and an inner layer with continuous Cr-rich oxides. The surface state was found to affect not only the surface morphology, but also the corrosion rate. Grinding accelerated the growth of protective oxide films such that the ground samples showed a lower oxidation rate than the polished ones. Samples of ground Alloy 690TT showed superior resistance to intergranular attack (IGA).
description.department[zhang, zhiming ; wang, jianqiu ; han, en-hou ; ke, wei] chinese acad sci, inst met res, liaoning key lab safety & assessment tech nucl ma, key lab nucl mat & safety assessment, shenyang 110016, peoples r china. ; wang, jq (reprint author), chinese acad sci, inst met res, liaoning key lab safety & assessment tech nucl ma, key lab nucl mat & safety assessment, shenyang 110016, peoples r china. ; wangjianqiu@imr.ac.cn
KeywordAlloy 690tt Oxidation Surface States High Pressure And High Temperature High-temperature Water Stress-corrosion Cracking Nickel-based Alloys Type-316 Stainless-steel Mixed-conduction Model X-ray Photoelectron Fe-cr Alloys Supercritical Water 288-degrees-c Water Electrochemical-behavior
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74032
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Z. M.,Wang Zhang, J. Q.,Han, E. H.,et al. Analysis of Surface Oxide Films Formed in Hydrogenated Primary Water on Alloy 690TT Samples With Different Surface States[J]. Journal of Materials Science & Technology,2014,30(12):1181-1192.
APA Z. M.,Wang Zhang, J. Q.,Han, E. H.,&Ke, W..(2014).Analysis of Surface Oxide Films Formed in Hydrogenated Primary Water on Alloy 690TT Samples With Different Surface States.Journal of Materials Science & Technology,30(12),1181-1192.
MLA Z. M.,et al."Analysis of Surface Oxide Films Formed in Hydrogenated Primary Water on Alloy 690TT Samples With Different Surface States".Journal of Materials Science & Technology 30.12(2014):1181-1192.
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