高熵合金涂层的等离子体制备与耐腐蚀性能研究

The surface alloying is one of the most important methods for improving corrosion resistance of metal. At present, most of the surface alloying coating is hard to provide synchronously the high hardness, high heat resistance, high corrosion resistance, high wear resistance and good oxidation resistance, and study results have a poor significance to guide practice application. In this project, base on high entropy alloy bulk material having a good many excellent performances, we propose a scheme to synthesize high entropy alloy coating by plasma preparation method and study the effect of as-synthesized coating on the corrosion resistance of metal surface. The starting point is the design of element and their ratio in high entropy alloy coating. Firstly, the high entropy alloy coatings were prepared by plasma preparation method. Secondly, the corrosion resistance of as-deposited coating was studied by electrochemistry method. The key points of this research lie in: (1) the microstructure of coating on nano and micro scale; (2) the influence of process parameters on the mechanical property and corrosion resistance of coating; (3) the related physical and chemical mechanism. The aim of this project is to develop the process of getting high entropy alloy coating with excellent corrosion resistance. This project has some innovation at academic thoughts and research methods.The research results would have strong scientific significance and industrial application values.

材料表面的合金化一直以来是金属表面防腐的重要手段之一。针对目前多数表面合金层难以同时满足高硬度、高耐热性、高耐腐蚀性、高耐磨抗性、抗氧化性等多重化性能的要求，及研究结果实践指导性相对较差的现状。本项目在总结高熵合金块体材料诸多优异性能的基础上，提出了等离子体制备高熵合金涂层，并用于金属表面防腐的研究方案。以合金涂层的元素和配比设计为切入点，拟采用等离子体制备和电化学腐蚀方法研究高熵合金涂层的耐腐蚀性能，重点探索纳米或微米尺度高熵合金涂层微观结构、成分和制备工艺参数对涂层力学和耐腐蚀性能的影响，及其相关物理机制。以期开发更具有实用价值的强耐蚀性高熵合金涂层制备工艺。项目研究的学术思想及研究方法有创新，研究结果具较强的科学意义及工业应用价值。

材料表面的合金化一直以来是金属表面防腐的重要手段之一。针对目前多数表面合金层难以同时满足高硬度、高耐热性、高耐腐蚀性、高耐磨抗性、抗氧化性等多重化性能的要求，及研究结果实践指导性相对较差的现状。本项目在总结高熵合金块体材料诸多优异性能的基础上，提出了等离子体制备高熵合金涂层，并用于金属表面防腐的研究方案。以合金涂层的元素和配比设计为切入点，采用磁控溅射制备和电化学腐蚀方法研究高熵合金涂层的耐腐蚀性能，研究主要涉及：具有超细纳米晶结构高熵合金涂层的制备工艺参数；各种参数条件下，涂层在常见环境中的耐腐蚀性能及其相关物理机制。