(中南工业大学粉末冶金研究所，长沙410083)
摘 要: 采用粉末冶金工艺研制成Ag-CuO(10)触头材料。结果表明：产品密度达9.62~9.7 g/cm3，硬度HB750~860，电阻率2. 25- 2. 39μΩ·cm，抗弯强度370~420M Pa； 200万次机械寿命和7周期交变湿热试验均能满足电力机车的使用要求。此外，在低压电器CZ5接触器上可代替Ag-CdO(15)触头。
关键字: 粉末冶金 银-氧化铜触头 性能
CONTACT MATERIAL
（Powder Metallurgy Research Institute,
Central South University of Technology,Changsha 410083）
Abstract:The contact material of Ag-CuO prepared by P/M was investigated. The results showed that its density is 9.62~9.7 g/cm3, hardness HB 750~860 MPa, electric resistivity 2.25~2.39μΩ·cm, TRS 370~420 MPa; and it can sustain 2 000 000 times of machine life-span tests and 7 cycles of thermohygrometric exchange tests, verifying that it meets the electric locomotive s demands; besides, Ag-CuO10may be used instead of AgCdO15contact on the contactor of low pressure electrical equipment.
Key words: powder metallurgy Ag-CuO contact property
