Effect of plasma ion nitriding on hydrogen embrittlement and wear resistance of martensitic stainless steel for hydrogen valve core of fuel cell electric vehicles

被引：4
作者：
Shin, Dong-Ho [1 ]
Hwang, Hyun-Kyu [1 ]
Kim, Seong-Jong [2 ]
机构：
[1] Mokpo Natl Maritime Univ, Grad Sch, Dept Marine Engn, 91 Haeyangdaehak Ro, Mokpo Si 58628, Jeollanam Do, South Korea
[2] Mokpo Natl Maritime Univ, Div Marine Syst Engn, 91 Haeyangdaehak Ro, Mokpo Si 58628, Jeollanam Do, South Korea
来源：
ENGINEERING FRACTURE MECHANICS | 2024年 / 306卷
关键词：
Plasma ion nitriding; Hydrogen permeation; Hydrogen embrittlement; Wear resistance; Mechanical characteristics; Martensitic stainless steel; MECHANICAL-PROPERTIES; CORROSION PROPERTIES; BEHAVIOR; FRICTION; IRON; ADHESION; HARDNESS; INDENTATION; COEFFICIENT; PARAMETERS;
D O I：
10.1016/j.engfracmech.2024.110247
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This research aims to understand how plasma ion nitriding affects the hydrogen embrittlement and wear resistance of martensitic stainless steel (UNS S41000). After hydrogen charging experiments, UNS S41000 and plasma ion nitrided specimens exhibited an increase in surface roughness due to damage and formation of blister. Additionally, the adhesion strength of plasma ion nitrided specimen decreased. High surface roughness and low adhesion increased the friction coefficient of plasma ion nitrided specimen. Nevertheless, wear resistance of plasma ion nitrided specimen is significantly superior compared to UNS S41000. This improvement results from the excellent mechanical properties and tribofilm of remaining nitride layer.
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页数：21
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