Effect of hydrogen charging on the wear resistance of CrN-coated Al alloy for hydrogen valve of fuel cell electric vehicles

被引：2

作者：

Shin, Dong-Ho ^{[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, Jeonranam Do, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 89卷

关键词：

Hydrogen charging; Hydrogen embrittlement; CrN coating; Aluminum alloy; Wear resistance; Mechanical characteristics; FCEVs; SUBSTRATE BIAS VOLTAGE; HIGH-STRENGTH STEEL; MECHANICAL-PROPERTIES; TRIBOLOGICAL BEHAVIOR; CARBON COATINGS; ELASTIC-MODULUS; THIN-FILMS; MICROSTRUCTURE; FRICTION; ALUMINUM;

D O I：

10.1016/j.ijhydene.2024.09.251

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：

In this research, wear resistance of chromium nitride (CrN) coated aluminum alloy with hydrogen charging was investigated. Delamination rates of the CrN coating layer after 6 and 12 h of hydrogen charging were measured to be 42.37% and 86.96%, respectively. In particular, damage by hydrogen attack was observed in the exposed area of aluminum alloy. Increasing in applied load and hydrogen charging time decreased the friction coefficient, and when the two factors interacted, a significantly higher increasing rate of wear damage was observed. The increasing rate in wear depth due to hydrogen charging was greater at the applied of 1 N than at 5 N. This is because hydrogen permeation affects the wear resistance of the CrN coating layer and aluminum alloy in the depth direction. In addition, re-transfer and re-adhesion of the CrN coating, whose adhesion strength had decreased due to hydrogen charging, actively occurred.

引用

页码：279 / 292

页数：14

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