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本文在纵向磁场型电极结构下,对混粉烧结、热等静压致密化工艺制取的CuCr,CuCrFe真空断路器触头材料进行了深入研究。研究了CuCr,CuCrFe触头材料的组织结构、力学物理性能、电器性能及其相互间的关系;研究了Fe的添加量(0～12％)对Cu、Cr比为1:1(重量比)的触头材料组织结构、力学物理性能,电器性能的影响规律,阐明了产生影响的机理。 研究结果表明,混粉烧结、热等静压致密化工艺制取的CuCr、CuCrFe触头材料具有优越的综合性能,完全适应真空断路器高电压、大容量、小型化的需要;Fe的加入,改善了工艺性能、细化了组织、强化了材料,在不降低其它性能的前提下,显著地提高了耐压水平,降低截流值;CuCrFe触头材料更适应于高电压、大容量、小型化、低截流的需要。
In this paper, the contact materials of CuCr and CuCrFe vacuum circuit breakers prepared by the process of powder agglomeration sintering and hot isostatic pressing were studied deeply in the longitudinal magnetic field electrode. The microstructure, mechanical and physical properties and electrical properties of CuCr and CuCrFe contact materials were studied. The effects of Fe addition (0 ~ 12%), Cu / Cr ratio 1: 1 (weight ratio) The contact material structure, mechanical and physical properties, electrical properties of the law of influence, to clarify the impact of the mechanism. The results show that CuCr and CuCrFe contact materials prepared by the process of powder agglomeration sintering and hot isostatic pressing densification have the excellent comprehensive performance and fully meet the needs of high voltage, large capacity and miniaturization of vacuum circuit breakers. The addition of Fe, Improve the process performance, refine the organization, strengthen the material, significantly improve the withstand voltage level and reduce the cut-off value under the premise of not reducing other properties; CuCrFe contact material is more suitable for high voltage, large capacity, miniaturization The need for low cutoff.