Effect of Microalloying with Ti or Cr on the Corrosion Behavior of Al-Ni-Y Amorphous Alloys

被引：20

作者：

Zhang, L. M. ^{[1
,2
]}

Ma, A. L. ^{[1
]}

Hu, H. X. ^{[1
]}

Zheng, Y. G. ^{[1
]}

Yang, B. J. ^{[3
]}

Wang, J. Q. ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China

来源：

CORROSION | 2018年 / 74卷 / 01期

基金：

中国国家自然科学基金;

关键词：

alloying; aluminum; amorphous alloy; corrosion resistance; film; N-type semiconductor; BULK METALLIC GLASSES; THERMAL-STABILITY; RESISTANCE; ADDITIONS;

D O I：

10.5006/2451

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of microalloying with Ti or Cr on the corrosion behavior of Al-Ni-Y amorphous alloys in 0.1 M NaCl solution was studied by potentiodynamic polarization, Mott-Schottky, and x-ray photoelectron spectroscopy techniques. Microalloying with Ti or Cr could greatly improve the corrosion resistance of Al-Ni-Y amorphous alloys. A high surface concentration of Ti or Cr in the passive films was detected, which should be responsible for the improved corrosion resistance compared to the control sample. The possible process of Ti or Cr involved in the passive films was proposed in terms of the point defect model and the vacancy diffusion mechanism. Furthermore, the effect of Ti was stronger than Cr because of the higher film resistance as well as the higher surface concentration. The different passivation abilities and atomic radiuses between Ti and Cr were presented to explain the better microalloying effect of Ti compared to Cr.

引用

页码：66 / 74

页数：9

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