|
|||||
|
|
| 喷涂功率对NiCr-Cr3C2涂层表面自由能及其摩擦性能的影响 | |
| 引用本文： | 李楠楠,康嘉杰,王海斗,董天顺,许中林,李国禄. 喷涂功率对NiCr-Cr3C2涂层表面自由能及其摩擦性能的影响[J]. 机械工程学报, 2015, 51(23): 96-102. DOI: 10.3901/JME.2015.23.096 |
| 作者姓名： | 李楠楠 康嘉杰 王海斗 董天顺 许中林 李国禄 |
| 作者单位： | 1. 河北工业大学材料科学与工程学院天津300130； 2. 中国地质大学(北京)工程技术学院北京100083； 3. 装甲兵工程学院装备再制造技术国防科技重点实验室北京100072 |
| 基金项目： | 国家自然科学基金(51275151)、国家重点基础研究发展计划(973计划，2011CB013405)和国家杰出青年科学基金(51125023)资助项目 |
| 摘 要： | 利用超音速等离子喷涂技术制备了不同喷涂功率条件下的NiCr-Cr3C2涂层，结合表面自由能理论研究了其表面摩擦学性能。利用Owens-Wendt几何平均法计算了涂层的表面自由能及其分量。对比发现，涂层孔隙率、显微硬度和摩擦因数均随着喷涂功率的变化而变化，且其变化趋势与极性分量均表现出一定的相似性。分析表明，受喷涂功率的影响，喷涂粒子的温度和速度对涂层表面分子间作用力产生影响，从而间接改变了涂层表面的自由能，并且自由能及其分量的改变，会直接影响NiCr-Cr3C2涂层表面的摩擦学特性。 |
| 关 键 词： | NiCr-Cr3C2涂层 表面自由能 超音速等离子喷涂 摩擦学性能 |
| 收稿时间： | 2014-12-12 |
Influence of Spraying Powers on Surface Free Energy and Tribological Properties of NiCr-Cr3C2 Coating |
|
| LI Nannan,KANG Jiajie,WANG Haidou,DONG Tianshun,XU Zhonglin,LI Guolu. Influence of Spraying Powers on Surface Free Energy and Tribological Properties of NiCr-Cr3C2 Coating[J]. Chinese Journal of Mechanical Engineering, 2015, 51(23): 96-102. DOI: 10.3901/JME.2015.23.096 | |
| Authors: | LI Nannan KANG Jiajie WANG Haidou DONG Tianshun XU Zhonglin LI Guolu |
| Affiliation: | 1. School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130;2. School of Engineering and Technology, China University of Geosciences, Beijing 100083;3. National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072 |
| Abstract: | The NiCr-Cr3C2 coatings are prepared by the supersonic plasma spraying under different spraying powers and the tribological properties are studied with surface free energy theory. By measuring the contact angles of the coating, the surface free energy and its components are calculated by the Owens-Wendt geometric mean method. By comparing the analysis, it finds that the porosity, micro-hardness and friction coefficient of the coating change as the spraying power, and the trend shows a certain similarity with the polar component. The analysis result indicates that the intermolecular force of surface is affected by the temperature and velocity of the flying particles under different spraying power. That indirectly changes the surface free energy and its components. When the change happened, the tribological properties of NiCr-Cr3C2 coating will be affected directly. |
| Keywords: | NiCr-Cr3C2 coatings supersonic plasma spraying surface free energy tribological property |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《机械工程学报》浏览原始摘要信息 | |
| 点击此处可从《机械工程学报》下载全文 | |