| 引用本文: | 梁斐珂,孙德恩,陈思琦,黄佳木,裴晨蕊.铬掺杂碳基自润滑薄膜与铝合金的高温磨损机理[J].中国表面工程,2016,29(6):52~59 |
| LIANG Fei-ke,SUN De-en,CHEN Si-qi,HUANG Jia-mu,PEI Chen-rui.High Temperature Wear Mechanism of Chromium Doped Carbon-based Self-lubrication Thin Films Against Aluminum Alloy[J].China Surface Engineering,2016,29(6):52~59 |
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| 摘要: |
| 为了研究不同结构铬掺杂碳基薄膜在高温下与铝合金的磨损机理，采用非平衡磁控溅射在YT15刀具表面沉积Cr/CrC/DLC单周期和Cr/（CrC-DLC）n多周期多层膜，在24、200和400℃下与A319和A390铝合金进行摩擦试验。采用扫描电子显微镜、原子力显微镜、纳米压痕仪、拉曼光谱仪、销盘磨损仪对薄膜的形貌结构、力学和摩擦学性能进行测试。研究表明：多周期多层膜结构打断薄膜柱状生长，提高膜基结合力。两种薄膜表面粗糙度和硬度分别为4.3 nm和5.4 nm、9.8 GPa和9.0 GPa。磨球表面转移层由硅、石墨以及剥落的薄膜碎片组成，连续的转移层降低摩擦因数；但随着温度升高，转移层的连续性被破坏，导致摩擦因数升高。在高温摩擦过程中，多周期多层膜磨损逐渐释放出DLC子膜层，通过DLC子膜层的石墨化转变来保持低摩擦因数，提高薄膜寿命。薄膜磨损由室温的磨料磨损转变为高温的粘着磨损和犁沟磨损，其中由于A390含有初晶硅使磨损以犁沟磨损为主。 |
| 关键词: 碳化铬 类金刚石 摩擦因数 高温磨损 铝合金 |
| DOI：10.11933/j.issn.1007-9289.2016.06.008 |
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| 基金项目:中央高校基本科研业务费科研专项（CDJZR14135502）；重庆市基础与前沿研究计划项目（cstc2015jcyjA70005） |
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| High Temperature Wear Mechanism of Chromium Doped Carbon-based Self-lubrication Thin Films Against Aluminum Alloy |
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LIANG Fei-ke, SUN De-en, CHEN Si-qi, HUANG Jia-mu, PEI Chen-rui
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School of Materials Science and Engineering, Chongqing University, Chongqing 400044
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| Abstract: |
| In order to research the wear mechanism of different structural chromium doped carbon-based thin films against aluminum alloy under high temperatures, Cr/CrC/DLC single period multilayer and Cr/(CrC-DLC)n multilayer were deposited by unbalance magnetron sputtering, the wear properties of Cr/CrC/DLC and Cr/(CrC-DLC)n against A319 and A390 ball under 24, 200 and 400℃ were tested. The surface morphology, microstructure, hardness, and wear resistance were measured by SEM, AFM, nanoindentation test, Raman and Pin on disc tribometer. The results show that the multilayer structure can enhance the adhesion of thin films due to the interruption of columnar structure. The surface roughness and hardness of two types of films are 4.3 nm and 5.4 nm, 9.8 GPa and 9.0 GPa, respectively. The surface transfer layer consists of silicon particles, graphite and stripped fragment of films, and the continuous transfer layer can reduce the friction coefficient. As the temperature increases, the continuity of the transfer layer is destroyed, leading the increase of the friction coefficient. During high temperatur wear test, the DLC coating is gradually released with the wear out of the multilayer, the life span of films increase with the decrease of the friction coefficient. Wear of the films in the form of abrasive wear from room temperature changes into a high temperature adhesive wear and plowing wear, and due to the primary silicon of A390, the wear is determined by plowing wear. |
| Key words: CrC diamond like carbon(DLC) friction coefficient high temperature wear aluminum alloy |
