中国高温用钨铜复合材料的研究现状

Current Research Status of W-Cu Composites for High Temperature in China

摘要:

综述了中国高温用钨铜复合材料在制备技术、高温强度、抗烧蚀性、抗热震性、尺寸稳定性等方面的研究现状。目前，中国高温用钨铜复合材料主要采用烧结．熔渗法进行制备，从材料的性能研究来看，钨铜复合材料的高温强度主要取决于钨骨架的强度；铜含量高，渗铜均匀的材料，抗热震性相对较好；断裂韧性可以作为表征材料抗热震性能的指标之一；通过调整制备工艺参数，能有效的控制部件由于高温下2次烧结所产生的尺寸变化；对于材料合金化的研究表明，合金化一方面降低了材料的密度，另一方面还明显的提高了材料的高温强度等性能。

关键词:高温钨铜复合材料 研究现状

Abstract:

The current research status of tungsten-copper composites used at high temperature in China had been expounded, which involves the fabricating technique, high temperature strength, burning erosive resistance, thermo-shock resistance and dimensional stability, etc. The properties of material have been developing as the sintering-melting method had been used. The high temperature strength was objected to the strength of tungsten skeleton. The thermo-shock resistance was subjected to the Cu-content and its well-distributed in material after melting-penetrating. And through the technologys improving, the burning erosive resistance and dimensional stability in the course of sintering had well been developed.

Key words:W-Cu composite,high-temperature,research status