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材料工程  2017, Vol. 45 Issue (9): 86-92    DOI: 10.11868/j.issn.1001-4381.2016.001299
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
大气等离子喷涂NiCrBSi-Mo/Ni涂层中黏结层对NiCrBSi-Mo复合工作层性能的影响
杜际雨, 李方义, 鹿海洋, 商建通, 李振
山东大学 机械工程学院, 济南 250100
Effects of Bond Coating on NiCrBSi-Mo Composite Functional Coating Properties in Plasma Spraying NiCrBSi-Mo/Ni Coating
DU Ji-yu, LI Fang-yi, LU Hai-yang, SHANG Jian-tong, LI Zhen
School of Mechanical Engineering, Shandong University, Jinan 250100, China
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摘要 利用大气等离子喷涂系统在叶片钢材料FV520B上依次制备镍基黏结层和NiCrBSi-Mo复合工作层,并对NiCrBSi-Mo粉末的沉积率、涂层孔隙率、结合强度及表面硬度进行测试。结果表明:在NiCrBSi-Mo/Ni涂层中,厚度为180~220μm的黏结层在提高NiCrBSi-Mo粉末沉积率的同时可制备较低孔隙率、较高结合强度和硬度的表层涂层;黏结层厚度的增大导致工作层起始沉积位置的孔隙率增大,且加快了工作层在垂直方向上孔隙率的衰减过程。SEM分析发现,黏结层厚度的增大引起黏结层与工作层结合界面处熔滴沉积堆叠形貌的变化,黏结层中的缺陷对工作层产生"遗传性"的影响;胶结拉伸实验表明,黏结层厚度过大会导致拉伸过程中黏结层与工作层结合面处的断裂;在不同的抛磨面,一定黏结层厚度的试样块在垂直方向上的维氏硬度衰减较为缓慢,NiCrBSi-Mo/Ni涂层不仅保持了涂层表面高的硬度,且增大了涂层的厚度,以修复材料表面的损伤。
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杜际雨
李方义
鹿海洋
商建通
李振
关键词 NiCrBSi-Mo/Ni涂层黏结层孔隙率结合强度表面硬度衰减过程    
Abstract:Nickel-based bond coating and composite functional coating were sprayed on leaf blade steel material FV520B successively by using air plasma spraying system. NiCrBSi-Mo powder deposition rate, coating porosity, bonding strength and surface hardness were tested. The results indicate that, for the NiCrBSi-Mo/Ni coating, bond coating with 180-220μm thickness can improve NiCrBSi-Mo powder deposition rate while the surface coating with lower porosity, higher bonding strength and high hardness is prepared; the increase of bond coating thickness can lead to increase of functional coating porosity in the bottom and speed up the process of porosity attenuating in the vertical direction.SEM analysis found that the increase of bond coating thickness results in the droplet deposition morphology change in the bending interface with the functional coating. The defects of bond coating have genetic influence on composite functional coating. Bond tensile test results show that excessive bond coating thickness will cause fracture in the interface between bond coating and functional coating during the stretching process; in different grinding surfaces, Vickers hardness of test blocks with a certain bood coating thickness attenuates slowly in the vertical direction. NiCrBSi-Mo/Ni coating not only maintains high surface hardness, but also increases the coating thickness to repair surface damage.
Key wordsNiCrBSi-Mo/Ni coating    bond coating    porosity    bonding strength    surface hardness    attenuation procedure
收稿日期: 2016-10-30      出版日期: 2017-09-16
中图分类号:  TG174.442  
通讯作者: 李方义(1969-),男,教授,博士,从事绿色设计、绿色制造;再制造理论方法和技术;产品全生命周期建模、产品环境影响评估;结构轻量化、优化设计;低碳设计和制造等方向的研究工作,E-mail:lifangyi@sdu.edu.cn     E-mail: lifangyi@sdu.edu.cn
引用本文:   
杜际雨, 李方义, 鹿海洋, 商建通, 李振. 大气等离子喷涂NiCrBSi-Mo/Ni涂层中黏结层对NiCrBSi-Mo复合工作层性能的影响[J]. 材料工程, 2017, 45(9): 86-92.
DU Ji-yu, LI Fang-yi, LU Hai-yang, SHANG Jian-tong, LI Zhen. Effects of Bond Coating on NiCrBSi-Mo Composite Functional Coating Properties in Plasma Spraying NiCrBSi-Mo/Ni Coating. Journal of Materials Engineering, 2017, 45(9): 86-92.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.001299      或      http://jme.biam.ac.cn/CN/Y2017/V45/I9/86
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