Anodic dissolution characteristics of Inconel 718 in C6H5K3O7 and NaNO3 solutions by pulse electrochemical machining

被引：60

作者：

Wang, Jingtao ^{[1
]}

Xu, Zhengyang ^{[1
]}

Wang, Jing ^{[1
]}

Zhu, Di ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Natl Key Lab Sci & Technol Helicopter Transmiss, Nanjing 210016, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 183卷

基金：

中国国家自然科学基金;

关键词：

Electrochemical corrosion behaviour; Passivating; Film; Micro-pit structure; CITRIC-ACID; CORROSION BEHAVIOR; OXIDE-FILMS; HYDROGEN EVOLUTION; ALLOY; 690; ELECTROLYTE; WIRE; ELECTRODEPOSITION; RESISTANCE; TITANIUM;

D O I：

10.1016/j.corsci.2021.109335

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanism by which electrolytic products are removed during ECM of Inconel 718 in a C6H5K3O7 electrolyte was clarified. Experimental results revealed that Cit3- ions decrease the amounts of flocculent and insoluble products in the machining region considerably. The resulting passivating film presented a looser, more porous structure than that from a NaNO3 solution. This made the Inconel 718 more prone to electrochemical corrosion. The uniformity and microscale nature of the micro-pit structure dispersed on the machined surface improved substantially as the current density increased. This improved the surface quality dramatically. Finally, the anodic dissolution characteristic models were established.

引用

页数：17

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