TY - JOUR
T1 - Effect of addition of oxygen and water vapor on fretting fatigue properties of an austenitic stainless steel in hydrogen
AU - Komoda, Ryosuke
AU - Kubota, Masanobu
AU - Furtado, Jader
N1 - Funding Information:
This study was carried out with the support of AIR LIQUIDE , France, and AIR LIQUIDE JAPAN in the framework of the Air Liquide Industrial Chair on Hydrogen Structure Materials and Fracture at the Department of Mechanical Engineering of Kyushu University. This study was supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan. The International Institute for Carbon-Neutral Energy Research ( WPI-I2CNER ) is supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan.
Publisher Copyright:
© 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2015
Y1 - 2015
N2 - JIS SUS304 fretting fatigue test was done in high-purity hydrogen, an oxygen-hydrogen mixture and humidified hydrogen. The fretting fatigue strength in hydrogen was drastically changed depending on the oxygen level. Based on the XPS (X-ray photoelectron spectroscopy) analysis of the fretted surface, it was found that the fretting removed the original protection layer of the stainless steel, however, the addition of water vapor or ppm-level of oxygen produced an oxide layer on the fretted surface during the fretting that surpassed the removal effect of the initial oxide layer by fretting. In fact, a strong adhesion between the contacting surfaces occurred and no fretting wear particles were observed in the high-purity hydrogen. On the other hand, oxidized fretting wear particles were found in the oxygen-hydrogen mixture. Based on the geometry of contact used in this study, a severe concentration of the contact pressure arouse at the contact edge. This produces a compressive stress field in the specimen where the crack growth was suppressed. This stress concentration was relieved when fretting wear occurs. Therefore, the change in the fretting fatigue strength in hydrogen by the addition of oxygen is closely related to the change in the wear behavior.
AB - JIS SUS304 fretting fatigue test was done in high-purity hydrogen, an oxygen-hydrogen mixture and humidified hydrogen. The fretting fatigue strength in hydrogen was drastically changed depending on the oxygen level. Based on the XPS (X-ray photoelectron spectroscopy) analysis of the fretted surface, it was found that the fretting removed the original protection layer of the stainless steel, however, the addition of water vapor or ppm-level of oxygen produced an oxide layer on the fretted surface during the fretting that surpassed the removal effect of the initial oxide layer by fretting. In fact, a strong adhesion between the contacting surfaces occurred and no fretting wear particles were observed in the high-purity hydrogen. On the other hand, oxidized fretting wear particles were found in the oxygen-hydrogen mixture. Based on the geometry of contact used in this study, a severe concentration of the contact pressure arouse at the contact edge. This produces a compressive stress field in the specimen where the crack growth was suppressed. This stress concentration was relieved when fretting wear occurs. Therefore, the change in the fretting fatigue strength in hydrogen by the addition of oxygen is closely related to the change in the wear behavior.
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U2 - 10.1016/j.ijhydene.2014.12.129
DO - 10.1016/j.ijhydene.2014.12.129
M3 - Article
AN - SCOPUS:84921628363
SN - 0360-3199
VL - 40
SP - 16868
EP - 16877
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 47
ER -
