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在聚变反应堆之中第一壁材料具有非常重要的职责,钨是最有前景的第一壁材料,但是钨基材料的本征脆性极大地限制了其在高温热冲击条件下的应用。本课题主要对放电等离子体烧结的钨基复合材料进行了研究,具体为采用钨层片增韧相对钨基体进行强韧化研究。研究发现轧制钨片在烧结的过程中并不会阻碍钨基体的致密化进程并提高钨材料的强度,在层片复合中当轧制钨片与钨粉比例达到1:1时具有最高的强度。
Among the fusion reactors, the first wall material plays a very important role. Tungsten is the most promising first wall material, but the intrinsic brittleness of tungsten-based materials greatly limits its application under high temperature thermal shock conditions. The subject of the main research of the discharge plasma sintering of tungsten-based composite materials, specifically the use of tungsten layer toughening relative to the tungsten matrix toughening research. The results show that during the sintering process, the tungsten strip does not hinder the densification of the tungsten matrix and increase the strength of the tungsten matrix. When the ratio of tungsten plate to tungsten powder is 1: 1, the highest strength.