Formation of interfacial compounds and the effects on stripping behaviors of a cold-sprayed Zn-Al coating on interstitial-free steel

被引:19
|
作者
Liang, Y. L. [1 ,2 ,3 ]
Wang, Z. B. [2 ]
Zhang, J. B. [3 ]
Lu, K. [2 ]
机构
[1] Univ Sci & Technol China, Hefei 230026, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[3] Baoshan Iron & Steel Co Ltd, Res Inst, Adv Technol Div, Shanghai 201900, Peoples R China
基金
中国国家自然科学基金;
关键词
Cold spray; Zn-Al coating; Interstitial free steel; Reactive diffusion; Stripping behavior; CORROSION-RESISTANCE; POWDER PARTICLES; STAINLESS-STEEL; MICROSTRUCTURE; STRENGTH; ZINC; PERFORMANCE; MECHANISM; SUBSTRATE; PHASE;
D O I
10.1016/j.apsusc.2015.02.118
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
By means of cold spray, a Zn-Al coating was successfully deposited on an interstitial-free (IF) steel sheet. The formation of interfacial compounds between the coating and the IF steel was studied during diffusion annealing at 400 degrees C. And its correlations with the stripping behaviors of the coating were investigated by using a three-point bending method. The results showed that Fe-Zn and Fe-Al-Zn compounds begin to form at the coating/substrate interface after an annealing duration of 60 min, and the stripping resistance increases slightly before that duration and then decreases significantly by further increasing annealing duration. The enhanced stripping resistance at the earlier stage might be due to the modifications of microstructure and deformation compatibility of the sprayed coating, while the decreased stripping resistance at the later stage is related to the high stress concentration at the interface of the formed brittle Fe-Al-Zn phase and the Zn-Al coating. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:89 / 95
页数:7
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