|
|||||
|
|
| 2738模具钢表面激光熔覆Ni基WC复合涂层的摩擦磨损性能 | |
| 引用本文： | 戴晟,左敦稳,黎向锋,程虎,方志刚,王珉,缪宏.2738模具钢表面激光熔覆Ni基WC复合涂层的摩擦磨损性能[J].吉林大学学报(工学版),2012,42(4):924-929. |
| 作者姓名： | 戴晟 左敦稳 黎向锋 程虎 方志刚 王珉 缪宏 |
| 作者单位： | 1. 南京航空航天大学机电工程学院,南京210016 台州学院机械工程学院,浙江台州318000 2. 南京航空航天大学机电工程学院,南京,210016 3. 台州学院机械工程学院,浙江台州,318000 |
| 基金项目： | 航空科学基金项目，浙江省大型科学仪器设备协作共用平台科技计划项目，浙江省工具刃具检测与深加工技术研究重点实验室开放基金项目，江苏省普通高校研究生科技创新计划项目 |
| 摘 要： | 在2738模具钢表面通过CO2激光熔覆制备Ni基WC复合涂层。分别对2738钢基体和Ni-WC激光熔覆层进行干摩擦试验。用三维表面形貌仪测量磨损体积,用扫描电镜观察磨痕的表面形貌。试验结果表明,Ni-WC复合涂层试样的硬度显著提高,表面硬度超过1200HV,保证了Ni-WC熔覆层的耐磨性。熔覆层的平均摩擦因数约为0.24,与2738钢基体的摩擦因数0.43相比,降低了约44%。熔覆试样的比磨损率比基体试样的比磨损率下降了96.7%,WC硬质相提高了摩擦副表面的承载能力。磨粒磨损为Ni-WC复合涂层的主要磨损机理。 |
| 关 键 词： | 材料表面与界面 激光熔覆 Ni基WC复合涂层 摩擦磨损性能 2738模具钢 |
Friction and wear behavior of Ni-based WC composite coating on mould steel 2738 prepared by laser cladding |
|
| DAI Sheng,ZUO Dun-wen,LI Xiang-feng,CHENG Hu,FANG Zhi-gang,WANG Min,MIAO Hong.Friction and wear behavior of Ni-based WC composite coating on mould steel 2738 prepared by laser cladding[J].Journal of Jilin University:Eng and Technol Ed,2012,42(4):924-929. | |
| Authors: | DAI Sheng ZUO Dun-wen LI Xiang-feng CHENG Hu FANG Zhi-gang WANG Min MIAO Hong |
| Affiliation: | 1(1.College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;2.College of Mechanical Engineering,Taizhou University,Taizhou 318000,China) |
| Abstract: | The Ni-based WC composite(Ni-WC) coating on mould steel 2738 was prepared by CO2 laser cladding.The substrate 2738 steel and the Ni-based WCCC were tested under dry sliding friction conditions to investigate their friction and wear behavior.The wear volume of specimen was measured using a 3-D surface profilometer,and the worn surface topography was observed by the scanning electronic microscopy.The results show that the microhardness of the Ni-WC coating was enhanced significantly,its surface hardness exceeded 1200 HV,ensuring its wear resistance.The average friction factor was about 0.25,it decreased by about 44% in comparison with that of the substrate 2738 steel of 0.43.WC hard phase enhanced the bearing capacity of the friction surface,reduced the wear rate by 96.7%.The abrasive wear was the main wear mechanism for the Ni-WC coating. |
| Keywords: | surface and interface of material laser cladding Ni-based WC composite coating frictionand wear behavior mould steel 2738 |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |