Influence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding Contact
To improve the rolling–sliding contact fatigue strength of a case-carburized steel, the effect of the wear surface morphologies of manganese phosphate (MnP) coated steel and the growth and removal of phosphorus-containing tribofilm on surface-initiated crack formation was investigated. In order to m...
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| Format: | Article |
| Language: | English |
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Japanese Society of Tribologists
2020-06-01
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| Series: | Tribology Online |
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| Online Access: | https://www.jstage.jst.go.jp/article/trol/15/3/15_154/_pdf/-char/en |
| _version_ | 1818403668808957952 |
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| author | Yukio Tamura Kazutaka Kobayashi Kenichiro Aratani Shinji Tanaka Masao Kikuchi Masabumi Masuko Naoto Ohtake |
| author_facet | Yukio Tamura Kazutaka Kobayashi Kenichiro Aratani Shinji Tanaka Masao Kikuchi Masabumi Masuko Naoto Ohtake |
| author_sort | Yukio Tamura |
| collection | DOAJ |
| description | To improve the rolling–sliding contact fatigue strength of a case-carburized steel, the effect of the wear surface morphologies of manganese phosphate (MnP) coated steel and the growth and removal of phosphorus-containing tribofilm on surface-initiated crack formation was investigated. In order to modify the wear surface morphologies, two types of surface textures (ground and shot blasted) were prepared, followed by the MnP coating process. The tribological properties of the coated steel, tribofilm growth and removal, and surface-initiated crack formation were evaluated using a ball-on-disk tribometer with a rolling–sliding mode. The MnP coating on both the ground and shot blasted steel had nearly the same thickness and surface roughness. However, for the ground surface sample, the interface morphology between the coating and steel substrate was more irregular than the shot blasted surface sample, resulting in a larger number of exposed steel areas with smaller sizes after the MnP was almost worn away on tribological tests. During the running-in period, phosphorus-containing tribofilm growth and removal on the smaller exposed steel areas were observed. The surface-initiated crack formation on the smaller exposed steel areas was suppressed compared with larger exposed steel areas. |
| first_indexed | 2024-12-14T08:27:55Z |
| format | Article |
| id | doaj.art-545ef538bf8d4c58aa1acd1b807c3bdc |
| institution | Directory Open Access Journal |
| issn | 1881-2198 |
| language | English |
| last_indexed | 2024-12-14T08:27:55Z |
| publishDate | 2020-06-01 |
| publisher | Japanese Society of Tribologists |
| record_format | Article |
| series | Tribology Online |
| spelling | doaj.art-545ef538bf8d4c58aa1acd1b807c3bdc2022-12-21T23:09:36ZengJapanese Society of TribologistsTribology Online1881-21982020-06-0115315416910.2474/trol.15.154trolInfluence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding ContactYukio Tamura0Kazutaka Kobayashi1Kenichiro Aratani2Shinji Tanaka3Masao Kikuchi4Masabumi Masuko5Naoto Ohtake6Materials Technical Center, Komatsu Ltd.Materials Technical Center, Komatsu Ltd.Tokyo Institute of TechnologyTokyo Institute of TechnologyTokyo Institute of TechnologyTokyo Institute of TechnologyTokyo Institute of TechnologyTo improve the rolling–sliding contact fatigue strength of a case-carburized steel, the effect of the wear surface morphologies of manganese phosphate (MnP) coated steel and the growth and removal of phosphorus-containing tribofilm on surface-initiated crack formation was investigated. In order to modify the wear surface morphologies, two types of surface textures (ground and shot blasted) were prepared, followed by the MnP coating process. The tribological properties of the coated steel, tribofilm growth and removal, and surface-initiated crack formation were evaluated using a ball-on-disk tribometer with a rolling–sliding mode. The MnP coating on both the ground and shot blasted steel had nearly the same thickness and surface roughness. However, for the ground surface sample, the interface morphology between the coating and steel substrate was more irregular than the shot blasted surface sample, resulting in a larger number of exposed steel areas with smaller sizes after the MnP was almost worn away on tribological tests. During the running-in period, phosphorus-containing tribofilm growth and removal on the smaller exposed steel areas were observed. The surface-initiated crack formation on the smaller exposed steel areas was suppressed compared with larger exposed steel areas.https://www.jstage.jst.go.jp/article/trol/15/3/15_154/_pdf/-char/enmanganese phosphate coatingwearrolling contact fatiguerolling–sliding contacttribofilmcarburized steel |
| spellingShingle | Yukio Tamura Kazutaka Kobayashi Kenichiro Aratani Shinji Tanaka Masao Kikuchi Masabumi Masuko Naoto Ohtake Influence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding Contact Tribology Online manganese phosphate coating wear rolling contact fatigue rolling–sliding contact tribofilm carburized steel |
| title | Influence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding Contact |
| title_full | Influence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding Contact |
| title_fullStr | Influence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding Contact |
| title_full_unstemmed | Influence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding Contact |
| title_short | Influence of Wear Surface Morphology and Phosphorus-Containing Tribofilm on Crack Initiation of Manganese Phosphate Coated Steel under Rolling–Sliding Contact |
| title_sort | influence of wear surface morphology and phosphorus containing tribofilm on crack initiation of manganese phosphate coated steel under rolling sliding contact |
| topic | manganese phosphate coating wear rolling contact fatigue rolling–sliding contact tribofilm carburized steel |
| url | https://www.jstage.jst.go.jp/article/trol/15/3/15_154/_pdf/-char/en |
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