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Synergistic Effect of Mo, W, Mn and Cr on the Passivation Behavior of a Fe-Based Amorphous Alloy Coating
Tian, WP; Yang, HW; Zhang, SD; Yang, HW (reprint author), Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110178, Liaoning, Peoples R China.; Zhang, SD (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
2018-03-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume31Issue:3Pages:308-320
AbstractIn this work, the electrochemical behaviors of SAM2X5 Fe-based amorphous alloy coating and hard chromium coating were comparatively studied in 3.5 wt% NaCl solution. In comparison with the hard chromium coating, the SAM2X5 coating exhibited a wider and stable passive region with lower passive current density in the potentiodynamic polarization and showed a considerably lower current density at different anodic potentials in the potentiostatic polarization. In order to understand the passivation mechanism of the Fe-based amorphous coating, the components of the passive films formed at various polarization potentials were examined by X-ray photoelectron spectroscopy. The synergistic effect of Mo, W, Mn and Cr in the passive films was systemically analyzed. It has been revealed that Mo and W facilitate the formation of compact and stable Cr2O3 passive film at lower potentials, and the substantial enrichment of Mn in the passive film enhances the passivation ability at relatively higher potentials. The deep understanding of the passivation characteristics in multicomponent alloy systems could provide a guide for the design of corrosion-resistant amorphous alloy coatings for engineering applications.; In this work, the electrochemical behaviors of SAM2X5 Fe-based amorphous alloy coating and hard chromium coating were comparatively studied in 3.5 wt% NaCl solution. In comparison with the hard chromium coating, the SAM2X5 coating exhibited a wider and stable passive region with lower passive current density in the potentiodynamic polarization and showed a considerably lower current density at different anodic potentials in the potentiostatic polarization. In order to understand the passivation mechanism of the Fe-based amorphous coating, the components of the passive films formed at various polarization potentials were examined by X-ray photoelectron spectroscopy. The synergistic effect of Mo, W, Mn and Cr in the passive films was systemically analyzed. It has been revealed that Mo and W facilitate the formation of compact and stable Cr2O3 passive film at lower potentials, and the substantial enrichment of Mn in the passive film enhances the passivation ability at relatively higher potentials. The deep understanding of the passivation characteristics in multicomponent alloy systems could provide a guide for the design of corrosion-resistant amorphous alloy coatings for engineering applications.
description.department[tian, wan-ping ; yang, hong-wang] shenyang univ technol, sch mat sci & engn, shenyang 110178, liaoning, peoples r china ; [tian, wan-ping ; zhang, suo-de] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china
KeywordBulk Metallic Glasses Austenitic Stainless-steels High Corrosion-resistance Iron-chromium Alloys Erosion-corrosion Hard Chromium Molybdenum Hcl Cr3c2-nicr Initiation
Subject AreaMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51471166, 51131006, 51171119]; College Youth Scholar Fostering Program of Liaoning Province [LJQ2014015]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79454
Collection中国科学院金属研究所
Corresponding AuthorYang, HW (reprint author), Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110178, Liaoning, Peoples R China.; Zhang, SD (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Tian, WP,Yang, HW,Zhang, SD,et al. Synergistic Effect of Mo, W, Mn and Cr on the Passivation Behavior of a Fe-Based Amorphous Alloy Coating[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2018,31(3):308-320.
APA Tian, WP,Yang, HW,Zhang, SD,Yang, HW ,&Zhang, SD .(2018).Synergistic Effect of Mo, W, Mn and Cr on the Passivation Behavior of a Fe-Based Amorphous Alloy Coating.ACTA METALLURGICA SINICA-ENGLISH LETTERS,31(3),308-320.
MLA Tian, WP,et al."Synergistic Effect of Mo, W, Mn and Cr on the Passivation Behavior of a Fe-Based Amorphous Alloy Coating".ACTA METALLURGICA SINICA-ENGLISH LETTERS 31.3(2018):308-320.
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