微纳表面热功能结构及其脱合金原位成形方法

表面热功能结构广泛应用于热能转换与传递的各个环节,是机械与工程热物理交叉领域重要的研究方向。从加工学的角度综述了表面热功能结构的微纳发展现状和趋势。分析表明,对表面微纳结构的规则性、水热稳定性、固液界面特性的有效控制是提升传热性能的关键,也是表面微纳热功能结构加工领域的挑战。介绍了基于脱合金技术的表面纳米多孔金属结构原位成形方法及其在强化沸腾传热领域的应用现状和前景。

Micro/nano-scale surface thermal functional structure and its dealloying based in-situ processing technology

Surface thermal functional structures are widely used in energy conversion and transmission applications, which is an important research focus in the field of machinery and engineering thermal physics. The status and trends of the development of micro/nano-scale surface thermal functional structures are reviewed from the perspective of processing technology in this paper. Analysis indicates that the effective control of the regularity, hydrothermal stability, solid-liquid interface characteristics of micro/nano-structured surfaces is critical for enhancing heat transfer performance and also challenges the processing technology of micro/nano-scale surface thermal functional structures. Based on the research, the dealloying based in-situ processing technology is introduced, and the status and prospect of as-dealloyed nanoporous metal surface in the application of boiling heat transfer are presented.