| 丝电爆炸喷涂方法用于管内壁钼涂层的制备 |
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| 引用本文： | 朱亮,赵进峰,石茂虎.丝电爆炸喷涂方法用于管内壁钼涂层的制备[J].焊接学报,2014,35(6):65-68. |
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| 作者姓名： | 朱亮 赵进峰 石茂虎 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050 |
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| 基金项目： | 国家自然科学基金资助项目(51061011) |
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| 摘 要： | 开发一种管内壁连续丝电爆炸喷涂装置,在不锈钢管内进行钼丝的电爆炸喷涂试验,分析不同能量密度下涂层的表面形貌以及与基体的结合形态.结果表明,涂层主要是由爆炸产物中熔融液滴直接撞击基体表面形成.随着能量密度的提高,涂层由液相堆积层向液相喷涂层转变;进一步增大能量密度E,当E>350 J/mm3时,熔融金属粒子尺寸减小,温度增高,冲击速度变大,从而获得表面平整喷涂层,该类型涂层与基体结合强度高,但爆炸产物中的气相粒子份额增多,涂层的沉积率降低.
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| 关 键 词： | 丝电爆炸喷涂 管内壁 钼涂层 |
| 收稿时间： | 2013/1/5 0:00:00 |
Molybdenum coating prepared on inner surface of tube by wire electrical explosion spraying |
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| ZHU Liang,ZHAO Jin-feng and SHI Maohu.Molybdenum coating prepared on inner surface of tube by wire electrical explosion spraying[J].Transactions of The China Welding Institution,2014,35(6):65-68. |
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| Authors: | ZHU Liang ZHAO Jin-feng and SHI Maohu |
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| Affiliation: | State Key Laboratory of Gansu Advanced Processing and Recycling of Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | A continuously wire electrical explosion spraying device was developed to prepare Mo coating on the inner surface of stainless steel tube with variation of energy density. The surface morphology of coating and the bonding with the substrate were analyzed. The results show that the formation of coating was mainly caused by impact of liquid metal of explosion products. With increasing of energy density, the accumulated liquid coating changed to liquid spraying coating. When the energy density was greater than 350 J/mm3,the size of liquid drop reduced but the temperature and velocity of liquid drop increased. In this case, the smooth spraying coating with larger bonding strength was formed, but the coating deposition rate decreased due to more vapor particles produced. |
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| Keywords: | wire electrical explosion spraying inner surface of tube Mo coating |
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