罗兴,贺定勇,周正,王国红,王曾洁,吴旭.AlMg/Al2O3粉芯丝材电弧喷涂的粒子和涂层特征[J].表面技术,2018,47(7):191-196.
LUO Xing,HE Ding-yong,ZHOU Zheng,WANG Guo-hong,WANG Zeng-jie,WU Xu.Particle and Coating Formation Characteristics during Arc Spraying with AlMg/Al2O3 Cored Wires[J].Surface Technology,2018,47(7):191-196 |
| AlMg/Al2O3粉芯丝材电弧喷涂的粒子和涂层特征 |
| Particle and Coating Formation Characteristics during Arc Spraying with AlMg/Al2O3 Cored Wires |
| 投稿时间：2018-02-21 修订日期：2018-07-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.07.027 |
| 中文关键词: 电弧喷涂 AlMg/Al2O3粉芯丝材 飞行粒子 扁平粒子 抗冲击性 |
| 英文关键词:arc spraying AlMg/Al2O3 cored wire in-flight particle splat impact resistance |
| 基金项目:北京市属高等学校人才强教计划资助项目（001000543117017） |
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| Author | Institution |
| LUO Xing | School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China |
| HE Ding-yong | 1.School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2.Beijing Engineering Research Center of Eco-materials and LCA (Beijing University of Technology), Beijing 100124, China |
| ZHOU Zheng | 1.School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2.Beijing Engineering Research Center of Eco-materials and LCA (Beijing University of Technology), Beijing 100124, China |
| WANG Guo-hong | Beijing Engineering Research Center of Eco-materials and LCA (Beijing University of Technology), Beijing 100124, China |
| WANG Zeng-jie | Beijing Engineering Research Center of Eco-materials and LCA (Beijing University of Technology), Beijing 100124, China |
| WU Xu | Beijing Engineering Research Center of Eco-materials and LCA (Beijing University of Technology), Beijing 100124, China |
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| 中文摘要: |
| 目的 研究AlMg/Al2O3粉芯丝材电弧喷涂的飞行粒子、扁平粒子、涂层结构及涂层抗冲击性能。方法 研制了2种含微米级Al2O3粉料的铝基粉芯丝材，利用扫描电镜对收集到的电弧喷涂过程中形成的飞行粒子、扁平粒子以及喷涂层的微观结构进行表征。采用自制的循环冲击设备测试了涂层的抗冲击性能。结果 AlMg/Al2O3粉芯丝材电弧喷涂过程中形成了含有铝镁、铝镁包覆氧化铝、氧化铝3种不同类型的飞行粒子，添加的Al2O3粒径越小，铝镁包覆氧化铝飞行粒子中的铝镁膜增厚，所包覆的Al2O3颗粒越多。喷涂形成的扁平粒子形状复杂多样，表面不平坦，有溅射现象。制备的涂层结构致密、缺陷少，Al2O3粉料粒径范围为400~500 μm和30~50 μm制备的AlMg/Al2O3涂层表面的Al2O3颗粒平均面积含量分别为5.52%、13.54%，说明添加小粒径Al2O3颗粒的涂层中残留的Al2O3颗粒增多。在500次循环冲击试验下，AlMg涂层和AlMg/Al2O3涂层没有明显的径向、环形裂纹和大面积剥落现象，但存在明显的塑性变形。结论 随着添加的微米级Al2O3颗粒粒径的减小，涂层中Al2O3颗粒的含量增加。制备的AlMg/Al2O3涂层以塑性变形吸收了大部分冲击功，降低了冲击疲劳裂纹产生的可能性，涂层与基体保持良好的结合状态。 |
| 英文摘要: |
| The work aims to study in-flight particles, splat particles and coating structure produced during arc spraying of AlMg/Al2O3 cored wires, as well as impact resistance of the coatings. Two kinds of Al-base cored wires containing micron-grade Al2O3 particles were developed. The collected in-flight particles and splats particles produced during arc spraying, as well as coating microstructure were characterized with SEM. Impact resistance of the coatings was tested with a self-made apparatus. Three different types of in-flight particle, namely, AlMg, AlMg clad Al2O3, Al2O3, were generated during arc spraying of AlMg/Al2O3 cored wires. With the decrease of Al2O3 particle size, the AlMg clad Al2O3 particles consisted of thicker AlMg film and more Al2O3 particles. The splat shapes were irregular and complex, and the surfaces were uneven and subject to sputtering. The coating structure was compact and less defective. When the particle size range of Al2O3 particles was 400~500 μm, the average area content of Al2O3 particles on the surface of AlMg/Al2O3 coating was 5.52%, but it was 13.54% When the particle size range is 30~50 μm. Indicating that more Al2O3 particles accumulated in the coating containing Al2O3 particles of small particle size. Under the effects of 500 cycle cyclic impact tests, the AlMg coating and AlMg/Al2O3 coating exhibited no obvious radial, circular cracks and large area flaking, but obvious plastic deformation existed. The content of Al2O3 particles increases as the particle size of Al2O3 particles decreases. The as-prepared AlMg/Al2O3 coating absorbs most of the impact work through plastic deformation, reduces possibility of impact fa-tigue crack generation, and maintains a good bonding between coating and substrate. |
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