Microstructure design to improve the corrosion and cavitation corrosion resistance of a nickel-aluminum

被引：79

作者：

Qin, Zhenbo ^{[1
,2
]}

Zhang, Qi ^{[1
]}

Luo, Qin ^{[1
]}

Wu, Zhong ^{[3
]}

Shen, Bin ^{[1
]}

Liu, Lei ^{[1
,2
]}

Hu, Wenbin ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China

[3] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

来源：

CORROSION SCIENCE | 2018年 / 139卷

基金：

中国国家自然科学基金;

关键词：

Alloy; Copper; EIS; Polarization; Erosion; De-alloying; BRONZE ALLOY; AS-CAST; NI CONTENT; BEHAVIOR; EROSION; COPPER; CHLORIDE; IMPEDANCE; COATINGS; PHASES;

D O I：

10.1016/j.corsci.2018.04.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructure evolution of the nickel-aluminum bronze alloy was studied by heat treatment, including annealing, normalizing, quenching and aging. The microstructure was refined and homogenized after quenching or quenching/aging at 450 degrees C, which can eliminate selective phase corrosion effectively. Compared with the current production process, static corrosion rate reduced about 50%, due to the rapid formation of a protective film. In addition, cavitation corrosion rate reduced by a factor of 4.9 and 7.9 for the quenched and quenched/aged at 450 degrees C samples, respectively. This can be attributed to the improved hardness and weakened synergy between corrosion and mechanical attack.

引用

页码：255 / 266

页数：12

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