Intergranular pitting tendency of yttrium implanted Inconel 600 in acidic chloride media

被引：10

作者：

Deen, K. M. ^{[2
]}

Afzal, Naveed ^{[1
]}

Ahmad, R. ^{[1
]}

Niazi, Z. ^{[1
]}

Ayub, R. ^{[1
]}

Farooq, A. ^{[2
]}

Khan, I. H. ^{[3
]}

Khaleeq-ur-Rahman, M. ^{[1
]}

机构：

[1] Govt Coll Univ, Ctr Adv Studies Phys, Lahore, Pakistan

[2] Univ Punjab, CEET, Dept Met & Mat Engn, Lahore 54590, Pakistan

[3] Univ Punjab, Inst Chem Engn & Technol, Lahore 54590, Pakistan

来源：

SURFACE & COATINGS TECHNOLOGY | 2012年 / 212卷

关键词：

Superalloys; Ion implantation; Polarization; Intergranular corrosion; Passive films; CHROMIUM ION-IMPLANTATION; STRESS-CORROSION CRACKING; THERMAL-TREATMENT; BASE ALLOYS; BEHAVIOR; NICKEL; OXIDATION; KINETICS; WATER; PH;

D O I：

10.1016/j.surfcoat.2012.09.017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Yttrium ions of energy 0.5 MeV were implanted to modify the surface of Inconel 600 by using a pelletron Accelerator. Microstructural and XRD studies reveal austenitic nickel solid solution (gamma) and intergranular carbides. The surfaces were electrochemically investigated by potentiodynamic polarization, Electrochemical impedance spectroscopy and Mott-Schottky techniques in acidic saline solution. The results indicate that the yttrium ions implantation significantly reduces the intragranular pitting as compared to the intergranular pitting tendency of the alloy. The low passive current density, minor pseudo-capacitive behavior and high flat band potential with p-type nature of passive film limit the electrochemical dissolution of the yttrium implanted Inconel. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：61 / 66

页数：6

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