Effects of WC phase contents on the microstructure, mechanical properties and tribological behaviors of WC/a-C superlattice coatings
文献类型：期刊论文
| 作者 | Pu JB(蒲吉斌)1 ; He DQ(何东青)2,3; Wang LP(王立平)1; Wang LP(王立平)
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| 刊名 | Applied Surface Science
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| 出版日期 | 2015 |
| 卷号 | 357页码:2039-2047 |
| 关键词 | Nanocomposite WC/a-C superlattice coatings Microstructure Tribological properties |
| ISSN号 | 0169-4332 |
| 通讯作者 | 王立平 |
| 英文摘要 | Nanocomposite WC/a-C coatings with variable contents of tungsten carbide (WC1−x) and amorphous carbon (a-C) were successfully fabricated using a magnetron sputtering process. The microstructure, mechanical properties and tribological behaviors of the as-fabricated coatings were investigated and compared. The results showed that the “superlattice coating” feature of an alternating multilayer structure with a-C and WC1−x nanocrystallites layers on the nanoscale was formed. These multilayer superlattice structures led to diminished residual stress and improved the strength of the adhesion to the substrate. The WC/a-C coating with W 5.43 at.% exhibited low friction coefficients of 0.05 at 25 °C and 0.28 at 200 °C. This significant improvement in the tribological performances of the WC/a-C coating was mainly attributed to the superior “superlattice” microstructure and the formation of a continuously compacted tribofilms, which was rich in graphitized carbon at 25 °C and dominated by the friction triggered WO3 at 200 °C. Moreover, the WC/a-C coating with W 5.43 at.% achieved optimal anti-wear properties at 25 °C due to the synergistic combination of the enhancement effects of the WC1−x nanoparticles and the partition effect from the transfer film that restricted direct contact of the steel ball with the coating and thus prevented further intense wear. The accelerated wear of the WC/a-C coating with the increase of the WC phase content at 200 °C might be due to the combination of oxidation wear and abrasive wear that originated from the WC1−x phase. |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 资助信息 | the Program of the Light of the Chinese Academy of Sciences in China's Western Region (2013);the National Nature Science Foundation of China (Grant 51322508;11172300) |
| 语种 | 英语 |
| WOS记录号 | WOS:000366219700093 |
| 源URL | [http://210.77.64.217/handle/362003/19193]  |
| 专题 | 兰州化学物理研究所_固体润滑国家重点实验室 |
| 通讯作者 | Wang LP(王立平) |
| 作者单位 | 1.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Protect Technol Zhejiang Pro, Key Lab Marine Mat & Related Technol, Ningbo 315201, Zhejiang, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pu JB,He DQ,Wang LP,et al. Effects of WC phase contents on the microstructure, mechanical properties and tribological behaviors of WC/a-C superlattice coatings[J]. Applied Surface Science,2015,357:2039-2047. |
| APA | Pu JB,He DQ,Wang LP,&王立平.(2015).Effects of WC phase contents on the microstructure, mechanical properties and tribological behaviors of WC/a-C superlattice coatings.Applied Surface Science,357,2039-2047. |
| MLA | Pu JB,et al."Effects of WC phase contents on the microstructure, mechanical properties and tribological behaviors of WC/a-C superlattice coatings".Applied Surface Science 357(2015):2039-2047. |
入库方式： OAI收割
来源：兰州化学物理研究所
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