Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying
The multilayered composite WC-Co/MoS<sub>2</sub>-Ni self-lubricating coatings were prepared by detonation gun spraying technology. The coating microstructure, element distribution, adhesive strength, and tribological properties were studied systematically. The results show that a little...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2017-03-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2017/V45/I3/73 |
| _version_ | 1797967045917147136 |
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| author | WANG Tie-gang LI Bai-song YAN Bing FAN Qi-xiang LIU Yan-mei GONG Jun SUN Chao |
| author_facet | WANG Tie-gang LI Bai-song YAN Bing FAN Qi-xiang LIU Yan-mei GONG Jun SUN Chao |
| author_sort | WANG Tie-gang |
| collection | DOAJ |
| description | The multilayered composite WC-Co/MoS<sub>2</sub>-Ni self-lubricating coatings were prepared by detonation gun spraying technology. The coating microstructure, element distribution, adhesive strength, and tribological properties were studied systematically. The results show that a little of MoS<sub>2</sub> is oxidized and decomposed into gas of SO<sub>2</sub> during the high-temperature spraying process. The SO<sub>2</sub> left in the coating and can form into the micro porosities. The friction coefficient of the WC-Co coating first increases rapidly in the initial running-in phase, and then gradually increases slightly after entering into the steady-state phase; whereas the friction coefficient of multilayer composite coating steps in the steady-state phase soon and starts to decline gradually when the top WC-Co coating became perforated. By comparison, the coating cohesion declines slightly after adding the self-lubricating layer MoS<sub>2</sub>-Ni, but the friction coefficient decreases by about 40%, and the wear resistance is also improved slightly. |
| first_indexed | 2024-04-11T02:24:57Z |
| format | Article |
| id | doaj.art-964422afb1b640f3a2227e0773cddc59 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:24:57Z |
| publishDate | 2017-03-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-964422afb1b640f3a2227e0773cddc592023-01-02T22:55:38ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812017-03-01453737910.11868/j.issn.1001-4381.2016.000002201703000002Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun SprayingWANG Tie-gang0LI Bai-song1YAN Bing2FAN Qi-xiang3LIU Yan-mei4GONG Jun5SUN Chao6Tianjin Key Laboratory of High Speed Cutting and Precision Processing, Tianjin University of Technology and Education, Tianjin 300222, ChinaTianjin Key Laboratory of High Speed Cutting and Precision Processing, Tianjin University of Technology and Education, Tianjin 300222, ChinaTianjin Key Laboratory of High Speed Cutting and Precision Processing, Tianjin University of Technology and Education, Tianjin 300222, ChinaTianjin Key Laboratory of High Speed Cutting and Precision Processing, Tianjin University of Technology and Education, Tianjin 300222, ChinaTianjin Key Laboratory of High Speed Cutting and Precision Processing, Tianjin University of Technology and Education, Tianjin 300222, ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaThe multilayered composite WC-Co/MoS<sub>2</sub>-Ni self-lubricating coatings were prepared by detonation gun spraying technology. The coating microstructure, element distribution, adhesive strength, and tribological properties were studied systematically. The results show that a little of MoS<sub>2</sub> is oxidized and decomposed into gas of SO<sub>2</sub> during the high-temperature spraying process. The SO<sub>2</sub> left in the coating and can form into the micro porosities. The friction coefficient of the WC-Co coating first increases rapidly in the initial running-in phase, and then gradually increases slightly after entering into the steady-state phase; whereas the friction coefficient of multilayer composite coating steps in the steady-state phase soon and starts to decline gradually when the top WC-Co coating became perforated. By comparison, the coating cohesion declines slightly after adding the self-lubricating layer MoS<sub>2</sub>-Ni, but the friction coefficient decreases by about 40%, and the wear resistance is also improved slightly.http://jme.biam.ac.cn/CN/Y2017/V45/I3/73wc-co/mos<sub>2</sub>-ni coatingself-lubricating coatingdetonation gun sprayingfriction and wear |
| spellingShingle | WANG Tie-gang LI Bai-song YAN Bing FAN Qi-xiang LIU Yan-mei GONG Jun SUN Chao Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying Cailiao gongcheng wc-co/mos<sub>2</sub>-ni coating self-lubricating coating detonation gun spraying friction and wear |
| title | Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying |
| title_full | Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying |
| title_fullStr | Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying |
| title_full_unstemmed | Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying |
| title_short | Tribological Behavior of Multi-layered WC-Co/MoS<sub>2</sub>-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying |
| title_sort | tribological behavior of multi layered wc co mos sub 2 sub ni self lubricating coating fabricated by detonation gun spraying |
| topic | wc-co/mos<sub>2</sub>-ni coating self-lubricating coating detonation gun spraying friction and wear |
| url | http://jme.biam.ac.cn/CN/Y2017/V45/I3/73 |
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