省煤器表面耐腐超导热石墨烯复合涂层的性能

Properties of Corrosionresistant and Superconducting Heat Graphene Composite Coating on Economizer Surface

摘要:

为解决燃煤电厂省煤器的磨损及腐蚀问题，同时不影响其换热性能，通过添加石墨烯改性瓷釉，并采用喷涂技术制备新型石墨烯复合涂层.对石墨烯复合涂层进行扫描电子显微镜试验、硬度测试、静态硫酸腐蚀试验、导热性能测试及拉伸试验，研究其性能.试验结果表明，石墨烯复合涂层的结构致密，孔隙率小且硬度大，耐磨、耐腐性能良好，可以有效地保护基体材料.石墨烯复合涂层的导热系数达到38 W?（m?K）-1，远优于传统的陶瓷涂层.

Abstract:

In order to solve the problem of wear and corrosion for the economizer, and not to impair its thermal conductivity, a graphene composite coating was presented by applying graphene modified enamel and spraying technology. The properties of the graphene composite coating were investigated by scanning electron microscopy (SEM) observation, the test of static sulfuric acid corrosion, hardness, thermal conductivity and tension. The experimental results showed that graphene composite coating has many advantages, such as compact structure, small porosity, high hardness, good wear and corrosion resistance. Graphene composite coating can effectively protect the matrix material because of its significant performance. Furthermore, thermal conductivity of the graphene composite coating can reach 38 W?（m?K）-1, which is much better than that of the traditional ceramic coating.