熔渗制备WCu假合金高温润湿性及渗流行为研究

WCu pseudo-alloy is widely used in high voltage transmission lines, the high temperature wetting phenomena and the evolution of liquid Cu seepage behavior in W skeleton exist in improving performance of WCu pseudo-alloy during the infiltration process. This project aimed to solve the problem that high temperature wettability and the critical mechanism of seepage during the infiltration process of preparation WCu pseudo-alloy are unclear. By test method for characterization of dynamic wetting angle and combining with high temperature wetting dynamics calculation, to analysis the adding different physical characteristics of alloy elements on the influence law of temperature wettability between Cu/W, establish the alloying elements selection principles to improved Cu/W high temperature wettability. Using experimental research, finite volume method simulation and flow dynamics and boundary layer diffusion dynamics calculations, to reveals the influence mechanisms of the high temperature wettability on the seepage behavior of WCu pseudo-alloy during the infiltration process, and construction of the associated with high temperature wetting, flow behavior and relative density. The results can provide theoretical guidance for the design and preparation of high-performance components WCu pseudo-alloy, and has great theoretical and practical meaning to enrich and develop the theory of high-temperature wetting and flow mechanism.

WCu假合金广泛用于高压传输线路中，在提高熔渗制备WCu假合金使用性能的过程中存在高温润湿现象及Cu液在W骨架中渗流行为的演变。本项目针对熔渗法制备WCu假合金过程中高温润湿性及熔渗机理尚不清楚的问题，通过试验方法表征动态润湿角并结合高温润湿动力学计算，研究添加不同物性特征合金元素对Cu/W间高温润湿性的影响规律，建立改善Cu/W间高温润湿性合金元素的选用原则。通过实验研究、有限体积法模拟以及渗流动力学和界面层扩散动力学计算相结合的方法，达到揭示高温润湿性对熔渗制备WCu假合金渗流行为影响机制的目的，并构建高温润湿性、渗流行为和致密度之间的关联。研究结果可以对高性能WCu假合金材料的成分设计及制备工艺提供理论指导，对丰富和发展高温润湿理论和渗流机制具有重要的理论和实践意义。

WCu假合金广泛用于高压传输线路中，在提高熔渗制备WCu假合金使用性能的过程中存在高温润湿现象及Cu液在W骨架中渗流行为的演变。本项目针对熔渗法制备WCu假合金过程中高温润湿性及熔渗机理尚不清楚的问题，通过试验方法表征动态润湿角并结合高温润湿动力学计算，研究了添加不同物性特征合金元素对Cu/W间高温润湿性的影响规律，建立了改善Cu/W间高温润湿性合金元素的选用原则。通过实验研究、有限体积法模拟以及渗流动力学和界面层扩散动力学计算相结合的方法，达到了揭示高温润湿性对熔渗制备WCu假合金渗流行为影响机制的目的，并构建高温润湿性、渗流行为和致密度之间的关联。研究结果可以对高性能WCu假合金材料的成分设计及制备工艺提供理论指导，对丰富和发展高温润湿理论和渗流机制具有重要的理论和实践意义。