(中南工業(yè)大學(xué)粉末冶金研究所，長(zhǎng)沙410083)
摘 要: 采用粉末冶金工藝研制成Ag-CuO(10)觸頭材料。結(jié)果表明：產(chǎn)品密度達(dá)9.62~9.7 g/cm3，硬度HB750~860，電阻率2. 25- 2. 39μΩ·cm，抗彎強(qiáng)度370~420M Pa； 200萬(wàn)次機(jī)械壽命和7周期交變濕熱試驗(yàn)均能滿(mǎn)足電力機(jī)車(chē)的使用要求。此外，在低壓電器CZ5接觸器上可代替Ag-CdO(15)觸頭。
關(guān)鍵字: 粉末冶金 銀-氧化銅觸頭 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
