Unveiling the transpassive film failure of 3D printing transition alloys

被引：27

作者：

Guo, Pengfei ^{[1
,2
]}

Lin, Xin ^{[2
]}

Macdonald, Digby D. ^{[3
]}

Ter-Ovanessian, Benoit ^{[4
]}

Liu, Jianrui ^{[2
]}

Song, Guangling ^{[5
]}

Zhang, Yufeng ^{[2
]}

Ren, Yongming ^{[6
]}

Lan, Hongbo ^{[1
]}

Huang, Weidong ^{[2
]}

机构：

[1] Qingdao Univ Technol, Shandong Engn Res Ctr Addit Mfg, Minist Educ, Key Lab Ind Fluid Energy Conservat & Pollut Contr, Qingdao 266520, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China

[3] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

[4] Univ Lyon, INSA Lyon, UMR CNRS 5510 MATEIS, 20 Ave Albert Einstein, F-69621 Villeurbanne, France

[5] Xiamen Univ, Coll Mat, Ctr Marine Mat Corros & Protect, Xiamen 361005, Peoples R China

[6] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710021, Shaanxi, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 204卷

基金：

中国国家自然科学基金;

关键词：

Superalloys; Polarization; TEM; Anodic dissolution; Anodic films; Transpassivity; POINT-DEFECT MODEL; ANODIC-DISSOLUTION; MILD-STEEL; CURRENT EFFICIENCY; INCONEL; 718; BEHAVIOR; IRON; FERRATE;

D O I：

10.1016/j.corsci.2022.110412

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The failure of transpassive films on transition metal alloys was investigated. The results show that the failure of the transpassive film on 3D printing nickel-based superalloy in flowing NaNO3 solution is dominated by selfinduced cracking of the film on niobium-segregated phases and the erosion-induced degradation on the film assisted by cation vacancy condensation at the metal/barrier layer interface. Secondary passivation induces the formation of a transpassive film, the nature of which has been debated for decades. The findings are consistent with a bi-layer structure comprising a point-defective barrier layer that grows into the substrate alloy and a precipitated outer layer.

引用

页数：10

共 31 条

[11] CURRENT EFFICIENCY DURING ELECTROCHEMICAL MACHINING OF IRON AND NICKEL [J].