| abstract |
The invention provides a weakly electric rare earth modified silver-copper-oxide electrical contact material and a preparation method thereof. The method combines solid solution strengthening and dispersion strengthening technology, first smelting and atomizing to obtain AgCu rare earth-Me powder, and then oxidizing Obtain silver oxide copper oxide powder, and then reduce it with hydrogen to obtain silver copper oxide powder, then shape, sinter and extrude to obtain silver copper oxide electrical contact material formed in situ by oxide, and finally obtain good wear resistance , Good resistance to arc erosion, good resistance to welding silver copper oxide electrical contact materials. The oxide disperse part of the microstructure of the material prepared by the invention and the rare earth modification enhance the joint action, the material has good breaking ability, stable contact resistance, can improve the quality stability of weak electric appliances or electronic products, and prolong their service life. |