| 交变磁场对激光熔覆Fe基复合涂层组织结构及其耐磨性的影响 |
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| 引用本文： | 蔡川雄,刘洪喜,蒋业华,王传琦,张晓伟,唐淑君. 交变磁场对激光熔覆Fe基复合涂层组织结构及其耐磨性的影响[J]. 摩擦学学报, 2013, 33(3): 229-235 |
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| 作者姓名： | 蔡川雄 刘洪喜 蒋业华 王传琦 张晓伟 唐淑君 |
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| 作者单位： | 昆明理工大学材料科学与工程学院,云南昆明,650093 |
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| 基金项目： | 国家自然科学基金项目(51165015)资助. |
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| 摘 要： | 采用激光熔覆辅助电磁控制工艺在45钢表面合成了Fe-Cr-Si-B-C复合涂层.通过对熔覆层进行SEM、EDS和XRD表征,研究了外加交变磁场对涂层微观组织和物相结构的影响.结果表明:外加磁场可降低激光熔池固-液界面前沿液相的温度梯度和增加非均质形核率,促使粗大、方向性很强的柱状晶转变为均匀、细小的等轴晶,并能够消除熔覆层内的气孔和裂纹等缺陷,但其对熔覆层物相组成的影响不大.熔覆涂层由白色初生γ-(Fe,Cr)固溶体相和其间黑色的γ-(Fe,Cr)共晶相组成,同时含有少量Fe3(B,C)、Cr7(B,C)3、CrFeB等碳化物和硼化物.常温干摩擦磨损试验表明,外加磁场所制备的涂层耐磨性能得到明显提高,其磨损失重仅为未加磁场的43％,且摩擦系数波动较小.
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| 关 键 词： | 激光熔覆 交变磁场 复合涂层 微观组织 摩擦磨损 |
Influence of AC Magnetic Field on Microstructure and Wear Behaviors of Laser Cladding Fe-Based Composite Coating |
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| CAI Chuan-xiong,LIU Hong-xi,JIANG Ye-hu,WANG Chuan-qi,ZHANG Xiao-wei and TANG Shu-jun. Influence of AC Magnetic Field on Microstructure and Wear Behaviors of Laser Cladding Fe-Based Composite Coating[J]. Tribology, 2013, 33(3): 229-235 |
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| Authors: | CAI Chuan-xiong LIU Hong-xi JIANG Ye-hu WANG Chuan-qi ZHANG Xiao-wei TANG Shu-jun |
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| Affiliation: | Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | |
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| Keywords: | laser cladding AC magnetic field composite coating microstructure friction and wear |
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