CAJ | 학술논문

为研究Cr含量对CuCr触头材料组织和性能的影响,采用真空熔铸法制备三种(CuCr25、CuCr30、CuCr40)不同Cr含量的触头材料,并对这3种材料的显微组织、物理性能及电流开断性能进行对比研究.结果表明:随着Cr含量的增加,CuCr材料微观组织的致密度提高,Cr颗粒得到细化,但是Cu基体中固溶的Cr含量增加；材料的电导率和密度均降低,硬度增加,抗拉强度呈线性增加；CuCr25和CuCr30的电流开断能力相当,CuCr40较低.
위연구Cr함량대CuCr촉두재료조직화성능적영향,채용진공용주법제비삼충(CuCr25、CuCr30、CuCr40)불동Cr함량적촉두재료,병대저3충재료적현미조직、물이성능급전류개단성능진행대비연구.결과표명:수착Cr함량적증가,CuCr재료미관조직적치밀도제고,Cr과립득도세화,단시Cu기체중고용적Cr함량증가；재료적전도솔화밀도균강저,경도증가,항랍강도정선성증가；CuCr25화CuCr30적전류개단능력상당,CuCr40교저.
In order to study effect of Cr content on microstructure and properties of CuCr contact material,three different Cr content contact materials,named CuCr25,CuCr30 and CuCr40,were manufactured by vacuum casting process.The microstructure,physical properties and breaking current properties were studied.The results show that both the consistency of the microstructure and the tensile strength increase,while the Cr particle size,the electrical conductivity and the density all decrease with increasing Cr content.The interrupting property of CuCr25 and CuCr30 is almost the same,whereas that of CuCr40 is the worst.