• CN:11-2187/TH
  • ISSN:0577-6686

›› 2005, Vol. 41 ›› Issue (3): 142-145.

• 论文 • 上一篇    下一篇

电热爆炸喷涂层温度场的数值模拟

蒲泽林;杨昆;刘宗德;毛雪平   

  1. 华北电力大学动力工程系
  • 发布日期:2005-03-15

NUMERICAL SIMULATION OF TEMPERATURE FIELD DURING ELECTROTHERMAL EXPLOSION SPRAY COATING

Pu Zelin;Yang Kun;Liu Zongde;Mao Xueping   

  1. Department of Thermal Power Engineering, North China Electric Power University
  • Published:2005-03-15

摘要: 涂层/基体的结合强度取决于涂层与基体间的热接触作用,尤其是第一层涂层与基体的相互作用。分析电热爆炸喷涂层的温度场特点,建立温度场模型,并对不锈钢基体上电热爆炸喷涂Al涂层进行了温度场的有限元数值模拟。给出了涂层和基体温度场随时间的变化规律。分析不同界面热阻对温度分布以及凝固过程的影响。结果表明涂层组织将在基体表面由于快速凝固而得到细化,仿真结果对于试验具有一定的指导意义。

关键词: 电热爆炸喷涂, 快速凝固, 数值模拟, 涂层, 温度场

Abstract: Thermal interaction determines the adherence be- tween the coating and the substrate, especially the interaction between the first layer and the substrate. The character of temperature field for electrothermal explosion spray coating is analysed. One-dimensional model of temperature field based on the character is made. The FEA program is used to simulate the thermal processes for a stainless steel substrate and a coating deposited on it. The evolution of the temperature is given with different times for the coating and the substrate. The effects of interface thermal resistance on the evolution of temperature and solidification are discussed. All these results are useful to understand the property of electrothermal explosion spray coating.

Key words: Coating, Electrothermal explosion spraying, Numerical simulation, Rapid solidification, Temperature field

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