Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surface
TC4/Ni60/Ni-graphite composite functional coatings with 25%(mass fraction), 35% and 45%Ni-graphite were prepared on TC4 titanium alloy surface by coaxial powder-feeding laser cladding technology. The forming quality, microstructure and mechanical properties of the composite coatings were studied by...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2021-10-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2020.001158 |
| _version_ | 1797969003066425344 |
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| author | ZHANG Tian-gang YAO Bo ZHANG Zhi-qiang LIU Ya-nan XUE Peng |
| author_facet | ZHANG Tian-gang YAO Bo ZHANG Zhi-qiang LIU Ya-nan XUE Peng |
| author_sort | ZHANG Tian-gang |
| collection | DOAJ |
| description | TC4/Ni60/Ni-graphite composite functional coatings with 25%(mass fraction), 35% and 45%Ni-graphite were prepared on TC4 titanium alloy surface by coaxial powder-feeding laser cladding technology. The forming quality, microstructure and mechanical properties of the composite coatings were studied by means of penetrant inspection, X-ray diffractometer, scanning electron microscope, energy spectrum analyzer, electron probe microanalyzer, white light interferometer, microhardness tester and friction and wear tester. The results show that the 35%Ni-graphite coating has the best forming quality, and different content Ni-graphite coatings have the same types of reaction precipitates, mainly Ti<sub>2</sub>Ni, TiC, TiB<sub>2</sub>, graphite and matrix α-Ti.The TiC coated graphite semi coherent composite phase and TiC, Ti<sub>2</sub>Ni cross growth coherent composite phase are formed in all coatings, the semi-coherent TiC coating can alleviate the melting of graphite in the molten pool, and the coherent TiC-Ti<sub>2</sub>Ni composite phase can make the brittle Ti<sub>2</sub>Ni structure uniformly refined. With the increase of Ni-graphite content, the average microhardness and wear resistance of the coatings decrease gradually, while the anti-friction performance first increases and then decreases, and the wear mechanism is abrasive wear. |
| first_indexed | 2024-04-11T02:55:16Z |
| format | Article |
| id | doaj.art-67d5b3e1481846c88f4cad3653cfd07d |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:55:16Z |
| publishDate | 2021-10-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-67d5b3e1481846c88f4cad3653cfd07d2023-01-02T15:20:36ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812021-10-01491010411510.11868/j.issn.1001-4381.2020.00115820211011Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surfaceZHANG Tian-gang0YAO Bo1ZHANG Zhi-qiang2LIU Ya-nan3XUE Peng4College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, ChinaCollege of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, ChinaCollege of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, ChinaSchool of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, ChinaEngineering Techniques Training Center, Civil Aviation University of China, Tianjin 300300, ChinaTC4/Ni60/Ni-graphite composite functional coatings with 25%(mass fraction), 35% and 45%Ni-graphite were prepared on TC4 titanium alloy surface by coaxial powder-feeding laser cladding technology. The forming quality, microstructure and mechanical properties of the composite coatings were studied by means of penetrant inspection, X-ray diffractometer, scanning electron microscope, energy spectrum analyzer, electron probe microanalyzer, white light interferometer, microhardness tester and friction and wear tester. The results show that the 35%Ni-graphite coating has the best forming quality, and different content Ni-graphite coatings have the same types of reaction precipitates, mainly Ti<sub>2</sub>Ni, TiC, TiB<sub>2</sub>, graphite and matrix α-Ti.The TiC coated graphite semi coherent composite phase and TiC, Ti<sub>2</sub>Ni cross growth coherent composite phase are formed in all coatings, the semi-coherent TiC coating can alleviate the melting of graphite in the molten pool, and the coherent TiC-Ti<sub>2</sub>Ni composite phase can make the brittle Ti<sub>2</sub>Ni structure uniformly refined. With the increase of Ni-graphite content, the average microhardness and wear resistance of the coatings decrease gradually, while the anti-friction performance first increases and then decreases, and the wear mechanism is abrasive wear.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2020.001158laser claddingtc4ni-graphitecomposite phasetribology |
| spellingShingle | ZHANG Tian-gang YAO Bo ZHANG Zhi-qiang LIU Ya-nan XUE Peng Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surface Cailiao gongcheng laser cladding tc4 ni-graphite composite phase tribology |
| title | Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surface |
| title_full | Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surface |
| title_fullStr | Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surface |
| title_full_unstemmed | Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surface |
| title_short | Effect of Ni-graphite content on microstructure and tribological properties of self-lubricating wear-resistant cladding layer on TC4 titanium alloy surface |
| title_sort | effect of ni graphite content on microstructure and tribological properties of self lubricating wear resistant cladding layer on tc4 titanium alloy surface |
| topic | laser cladding tc4 ni-graphite composite phase tribology |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2020.001158 |
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