Corrosion behavior of nano-treated AA7075 alloy with TiC and TiB2 nanoparticles

被引：66
作者：
Pan, Shuaihang [1 ,2 ,3 ]
Yuan, Jie [2 ]
Linsley, Chase [4 ]
Liu, Jingke [1 ]
Li, Xiaochun [1 ,2 ]
机构：
[1] Univ Calif Los Angeles, Samueli Sch Engn, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Samueli Sch Engn, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[3] Univ Utah, Dept Mech Engn, Salt Lake City, UT 84112 USA
[4] Univ Calif Los Angeles, Samueli Sch Engn, Dept Bioengn, Los Angeles, CA 90095 USA
来源：
CORROSION SCIENCE | 2022年 / 206卷
基金：
美国国家科学基金会;
关键词：
High-strength Al alloys; Nano-treating; Nanoparticles; Corrosion; Electrochemistry; ALUMINUM-ALLOY; PITTING CORROSION; GRAIN-BOUNDARIES; RESISTANCE; STRENGTH; MICROSTRUCTURE; OXIDATION; EIS;
D O I：
10.1016/j.corsci.2022.110479
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-strength Al alloys like Al-Zn-Mg-Cu series are susceptible to corrosion attacks. Nano-treating is an emerging metallurgical method to enhance their performance. However, there lacks an understanding of nanoparticles' effects on their corrosion. In this study, corrosion performance of two nano-treated cast and extruded AA7075 alloys (with TiC and TiB2) was investigated. Their dynamical corrosion characteristics on freshly exposed, passivated, and immersed surfaces were compared. The interplays among microstructures, oxidation passivation, and corrosion were revealed. The results show nano-treating enhances corrosion resistance of AA7075, particularly localized corrosion resistance. This study has advanced the multi-scale understanding of corrosion in nanotreated AA7075.
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页数：16
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