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| 激光熔覆制备Fe-Ti-Mo-C系复合涂层 | |
| 引用本文： | 王新洪,张敏,邹增大,曲仕尧.激光熔覆制备Fe-Ti-Mo-C系复合涂层[J].焊接学报,2010,31(12):53-56. |
| 作者姓名： | 王新洪 张敏 邹增大 曲仕尧 |
| 作者单位： | 1. 山东大学材料液固结构演变与加工教育部重点实验室,济南,250061;山东大学空间热物理研究中心,济南,250061 2. 山东大学机械工程学院,济南,250061 3. 山东大学材料液固结构演变与加工教育部重点实验室,济南,250061 |
| 摘 要： | 采用钛铁、钼铁和石墨为激光熔覆粉末,利用激光多道搭接熔覆技术在碳钢基体上制备Fe-Ti-Mo-C复合涂层.利用X射线衍射仪、场发射扫描电镜、电子探针对涂层的相结构和显微组织进行了研究.用显微硬度计和滑动磨损试验机,对涂层的硬度和耐磨性能进行测试.结果表明,涂层中原位生成了(Ti,Mo)C复合碳化物.(Ti,Mo)C呈面心立方结构,晶格常数略小于TiC晶粒.随着原材料中钼铁加入量的增加,涂层显微组织由铁素体、珠光体向马氏体转变,显微硬度和耐磨性增加,但抗裂性能降低. |
| 关 键 词： | 复合碳化物 激光熔覆 显微组织 耐磨性能 |
| 收稿时间： | 2009/8/28 0:00:00 |
Fabrication of Fe-Ti-Mo-C composite coating by laser cladding |
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| WANG Xinhong,ZHANG Min,ZOU Zengda and QU Shiyao.Fabrication of Fe-Ti-Mo-C composite coating by laser cladding[J].Transactions of The China Welding Institution,2010,31(12):53-56. | |
| Authors: | WANG Xinhong ZHANG Min ZOU Zengda and QU Shiyao |
| Affiliation: | Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China;Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China,School of Mechanical Engineering, Shandong University, Jinan 250061, China,Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China and Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China |
| Abstract: | Fe-Ti-Mo-C composite coatings were deposited on the steel by laser melting mixture of Fe-Ti,Fe-Mo and graphite powders.The phase structure and microstructure of the coatings were investigated by X-ray diffraction,field emission scanning electron microscope and electron probe micro-analyzer.Meanwhile,the microhardness and wear properties of the coatings were also tested by means of micro Vickers and block-on-ring wear testing machine.The results showed that(Ti,Mo) C multiple carbides were formed during laser cladding process.(Ti,Mo) C carbide has typically faceted feature,but the lattice pattern of(Ti,Mo) C carbide is somewhat less than that of TiC.With an increasing of addition of Fe-Mo,the microhardness and wear resistance of the coatings increased,but the crack resistance of the coatings decreased. |
| Keywords: | multiple carbide laser cladding microstructure wear properties |
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