Influence of hydrogen on electrochemical behavior of Ni-based superalloy 718

被引：3
|
作者：
Odemer, Gregory [1 ]
Andrieu, Eric [1 ]
Blanc, Christine [1 ]
机构：
[1] UPS, CIRIMAT, ENSIACET, Univ Toulouse,CNRS,INPT, 4 Allee Emile Monso,BP 44362, F-31030 Toulouse 4, France
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2018年 / 43卷 / 02期
关键词：
Nickel alloys; Hydrogen embrittlement; Electrochemistry; Galvanic coupling; SCANNING KELVIN PROBE; FORCE MICROSCOPY; ALUMINUM-ALLOY; EMBRITTLEMENT; TEMPERATURE; DIFFUSION; NICKEL; INCONEL-718; PERMEATION; FRACTURE;
D O I：
10.1016/j.ijhydene.2017.11.081
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Numerous studies have shown that Ni-based superalloy 718 may be sensitive to hydrogen embrittlement and have highlighted the dominant roles played by the hydrogen solubility and the hydrogen trapping. Samples were hydrogenated by cathodic polarization in molten salts under different conditions to vary the diffusible hydrogen content and to saturate the different hydrogen traps present in the microstructure strengthened by precipitation. Open circuit potential and galvanic coupling measurements were conducted in order to characterize the effect of diffusible and trapped hydrogen on electrochemical behavior and to discuss the possibility of galvanic coupling between zones with different hydrogen contents. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1006 / 1011
页数：6
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