Thickness-dependent pitting corrosion behavior in Ni-Nb thin film metallic glass

被引：14
|
作者：
Wu, Z. F.
Cao, Q. P. [1 ]
Ma, Y.
Wang, C.
Liu, S. Y.
Qian, X.
Wang, X. D.
Jiang, J. Z.
机构：
[1] Zhejiang Univ, Int Ctr New Struct Mat ICNSM, Hangzhou 310027, Zhejiang, Peoples R China
来源：
THIN SOLID FILMS | 2014年 / 564卷
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Metallic glasses; Thin films; Vapor deposition; Corrosion; Scanning electron microscopy; STAINLESS-STEEL; AISI; 316L; DEFORMATION; RESISTANCE;
D O I：
10.1016/j.tsf.2014.06.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Thin film metallic glasses (TFMGs) with a composition of Ni60Nb40 were magnetron sputtered on the substrate of austenitic stainless steel (SS). Potentiodynamic polarization measurements on TFMGs with different thicknesses in NaCI solution were conducted, and better corrosion resistance is achievable by increasing the film thickness. However, a critical film thickness exists, above which anti-pitting property cannot be significantly improved. The film density as a function of thickness has a similar tendency with the corrosion resistance, indicating the correlation of film density and corrosion resistance. Fossettes in the pits were observed in TFMGs deposited on SS rather than the bare SS, since pitting nuclei in TFMG can propagate more rapidly along depth than width due to the stronger pitting susceptibility of SS. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：294 / 298
页数：5
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