热管腐蚀的研究进展与展望-中国材料进展

文章信息/Info

Author(s):: TAO Jinran; CHENG Weizheng; ZHANG Wanli; ZHENG Feiyu; FU Benwei; DENG Tao; (School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

Keywords:: heat pipe; vapor-liquid phase change; service life; corrosion; heat transfer; working fluid

摘要:: 随着电子器件向着高集成度、大功率迅速发展，散热已经成为制约其发展的关键问题。热管通过气液相变模式进行散热，是最高效的传热方式之一，被广泛应用于航天、航空、电力电子等重要应用领域。这些应用要求热管在具有高传热性能的同时还能长期服役，而热管腐蚀是影响热管寿命的关键。造成热管腐蚀的原因很多，主要包括热管材料与工质相容性较差、热管内发生的气泡破裂和流体冲刷等。详细介绍了热管存在的腐蚀类型、重要影响因素（工质、温度、气体等），探讨了其相应腐蚀机理和腐蚀防护方法，并列举了典型的热管腐蚀实例。同时指出现有的热管腐蚀研究存在的问题，对该领域以后的发展方向作了展望。

Abstract:: With the rapid development of electronic devices towards high level of integration and high power, heat dissipation has become a key problem restricting their further development. Heat pipe, benefiting from vapor-liquid phase change, has become one of the most efficient methods for heat transfer, and has been widely used in many different fields, including aerospace, aviation, and power electronics. All these applications call for both high performance of heat transfer and long service life for heat pipes. Corrosion plays a critical role in affecting the service life of heat pipe. There are many factors contributing to corrosion inside heat pipes, including poor compatibility between heat pipe material and working medium, bubble fracture and fluid erosion in heat pipe, etc., and the study of corrosion inside heat pipe shows increased importance. In this paper, different types of corrosion existed in heat pipe, and the important influencing factors (working medium, temperature, gas or vapor, etc) are discussed in detail. The corresponding corrosion mechanisms and corrosion protection methods are presented, and the typical examples of heat pipe corrosion are described. In the end, the future development direction of heat pipe corrosion is also discussed.