High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coating
The NiCrBSi-Ti<sub>3</sub>SiC<sub>2</sub>-CaF<sub>2</sub>-WC self-lubricating anti-wear composite coating was fabricated on TC11 alloy substrate by laser cladding. The phase compositions and microstructure were invest-igated by X-ray diffractometer (XRD), scanning...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2019-05-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2019/V47/I5/72 |
| _version_ | 1797967170425061376 |
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| author | WANG Yong-gang LIU He-jian HUI Li ZHI Shan-jie LIU Hai-qing |
| author_facet | WANG Yong-gang LIU He-jian HUI Li ZHI Shan-jie LIU Hai-qing |
| author_sort | WANG Yong-gang |
| collection | DOAJ |
| description | The NiCrBSi-Ti<sub>3</sub>SiC<sub>2</sub>-CaF<sub>2</sub>-WC self-lubricating anti-wear composite coating was fabricated on TC11 alloy substrate by laser cladding. The phase compositions and microstructure were invest-igated by X-ray diffractometer (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). Microhardness was measured with a microhardness tester. Tribological proper-ties of the fabricated composite coatings were evaluated under dry sliding condition at room-temper-ature (25℃), 300℃ and 600℃, and the wear mechanism was analyzed. The results show that the mi-crostructure of the composite coatings consists of <i>γ</i>-Ni eutectic phase, <i>M</i><sub>23</sub>C<sub>6</sub>,TiC, (Ti,W)C,Ti<sub>5</sub>Si<sub>3</sub> hard phase and some Ti<sub>3</sub>SiC<sub>2</sub>,CaF<sub>2</sub>,TiF<sub>3</sub> lubricating phase. The microhardness of laser cladding layer is improved greatly. The average microhardness of the laser cladding coating is 863.63HV<sub>0.2</sub>, which is 2.46 times of the matrix. The friction coefficient and wear rate are lower than that of the substrate. The lowest friction coefficient and wear rate are 0.275 and 4.8×10<sup>-5</sup>mm<sup>3</sup>·N<sup>-1</sup>·m<sup>-1</sup> at 300℃, respectively. |
| first_indexed | 2024-04-11T02:25:54Z |
| format | Article |
| id | doaj.art-6ccbf555dc6b4ca7864341d6239ab468 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:25:54Z |
| publishDate | 2019-05-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-6ccbf555dc6b4ca7864341d6239ab4682023-01-02T22:37:14ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812019-05-01475727810.11868/j.issn.1001-4381.2018.000409201905000409High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coatingWANG Yong-gang0LIU He-jian1HUI Li2ZHI Shan-jie3LIU Hai-qing4Applied Technology College of Soochow University, Suzhou 215325, Jiangsu, ChinaApplied Technology College of Soochow University, Suzhou 215325, Jiangsu, ChinaKey Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, ChinaApplied Technology College of Soochow University, Suzhou 215325, Jiangsu, ChinaApplied Technology College of Soochow University, Suzhou 215325, Jiangsu, ChinaThe NiCrBSi-Ti<sub>3</sub>SiC<sub>2</sub>-CaF<sub>2</sub>-WC self-lubricating anti-wear composite coating was fabricated on TC11 alloy substrate by laser cladding. The phase compositions and microstructure were invest-igated by X-ray diffractometer (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). Microhardness was measured with a microhardness tester. Tribological proper-ties of the fabricated composite coatings were evaluated under dry sliding condition at room-temper-ature (25℃), 300℃ and 600℃, and the wear mechanism was analyzed. The results show that the mi-crostructure of the composite coatings consists of <i>γ</i>-Ni eutectic phase, <i>M</i><sub>23</sub>C<sub>6</sub>,TiC, (Ti,W)C,Ti<sub>5</sub>Si<sub>3</sub> hard phase and some Ti<sub>3</sub>SiC<sub>2</sub>,CaF<sub>2</sub>,TiF<sub>3</sub> lubricating phase. The microhardness of laser cladding layer is improved greatly. The average microhardness of the laser cladding coating is 863.63HV<sub>0.2</sub>, which is 2.46 times of the matrix. The friction coefficient and wear rate are lower than that of the substrate. The lowest friction coefficient and wear rate are 0.275 and 4.8×10<sup>-5</sup>mm<sup>3</sup>·N<sup>-1</sup>·m<sup>-1</sup> at 300℃, respectively.http://jme.biam.ac.cn/CN/Y2019/V47/I5/72laser claddingTC11coatinghigh temperature friction and wear |
| spellingShingle | WANG Yong-gang LIU He-jian HUI Li ZHI Shan-jie LIU Hai-qing High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coating Cailiao gongcheng laser cladding TC11 coating high temperature friction and wear |
| title | High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coating |
| title_full | High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coating |
| title_fullStr | High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coating |
| title_full_unstemmed | High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coating |
| title_short | High temperature tribological properties of laser cladding <i>in-situ</i> carbide reinforced self-lubricating wear resistant composite coating |
| title_sort | high temperature tribological properties of laser cladding i in situ i carbide reinforced self lubricating wear resistant composite coating |
| topic | laser cladding TC11 coating high temperature friction and wear |
| url | http://jme.biam.ac.cn/CN/Y2019/V47/I5/72 |
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