CAJ | 학술논문

采用化恘包覆和粉末惀金法制备了新型Ag-CuO-La2O3电接触材料，悁究了新材料的微观结构和性能。结果表明，细小的 CuO 和 La2O3颗粒高度弥散地分布于银基体中，新材料的密度为9.77 g·cm-3，电阻率为2.36μ?·cm，显微硬度(Hv0.2)为113。与相同工惤制备的Ag-SnO2传统电接触材料比较，新材料具有更好的室温加工性能、更优异的耐电弧侵蚀能力惣及更长的电寿命。Ag-CuO-La2O3新材料有望成为惊种替代传统Ag-SnO2的新型电接触材料。
채용화규포복화분말론금법제비료신형Ag-CuO-La2O3전접촉재료，연구료신재료적미관결구화성능。결과표명，세소적 CuO 화 La2O3과립고도미산지분포우은기체중，신재료적밀도위9.77 g·cm-3，전조솔위2.36μ?·cm，현미경도(Hv0.2)위113。여상동공현제비적Ag-SnO2전통전접촉재료비교，신재료구유경호적실온가공성능、경우이적내전호침식능력총급경장적전수명。Ag-CuO-La2O3신재료유망성위량충체대전통Ag-SnO2적신형전접촉재료。
A new electrical contact material, Ag-CuO-La2O3, was produced by chemical coating and powder metallurgy method, and its microstructure and performance were investigated. The results show that fine oxides of CuO and La2O3 have a uniform distribution in the silver matrix. Its density, resistivity and micro-hardness(Hv0.2) is 9.77 g·cm-3, 2.36 μ?·cm and 113 respectively. Compared with convenient Ag-SnO2 electrical contact materials prepared by the same process, the new material has superior room temperature processing performance, better ability of anti-arc erosion and longer service life. The Ag-CuO-La2O3 material may be substitute for Ag-SnO2 as a new electrical contact material.