化学镀在换热表面强化滴状凝结、阻垢、耐蚀研究进展

从换热器实际问题出发,分别回顾了化学镀层强化凝结换热、阻垢、耐蚀3个方面的研究进展。在强化凝结换热方面,阐述了以Ni-P化学镀为基础的界面表面能、镀层非晶含量、温度、压力以及添加PTFE等物质对在换热界面形成滴状凝结的影响。在化学镀阻垢方面,介绍了污垢的生长过程,讨论了镀层非晶含量、实验条件、梯度镀层以及添加W、BN、Sn、Cu等元素对镀层阻垢性能的影响。在化学镀耐腐蚀研究方面,阐述了镀层磷含量、梯度镀层、表面活性剂、镀液pH值、温度以及添加Cu、PTFE等元素对镀层抗腐蚀性能的影响。并根据实际生产情况,提出对镀层强化凝结换热、阻垢和耐腐蚀3个方面特性相互间的影响关系进行研究。同时提出,为了推进镀层技术工业化发展,还应解决镀层长效性的问题。

Research progress of electroless plating applied on heat exchange surface to enhance dropwise condensation,anti-fouling and anti-corrosion properties

Based on the practical problems of condenser, this article reviews the research progress of electroless plating applied to enhance dropwise condensation, anti-fouling and anti-corrosion properties.It is discussed the influence of surface energy, amorphous content, temperature, pressure, and PTFE content on the dropwise condensation.The growth of deposition on the electroless plating surface is introduced, and it is discussed the effect of amorphous content, experiment conditions, multi-layer plating and wolfram, boron nitride, stannum and cooper content on the surface anti-fouling property.This article discusses the influence of phosphorus content, multi-layer plating, surfactant, pH, temperature and Cu and PTFE content on the surface anti-corrosion property.Considering practical problems of condenser, put forward to future research which is creating a muli-property electroless plating.Meanwhile, in order to promote the development of electroless plating technology industrialization, longevity problem of electroless plating should also be solved.