| three kinds of Ag/SnO2(10) with different average particle size of SnO2 were prepared by powder metallurgy method including mechanical powder mixing, cold isostatic pressing, sintering, hot extrusion, rolling, drawing ,intermediate heat treatment, etc. The effects of particle size of SnO2 on microstructure, density, mechanical properties and electrical properties of Ag/SnO2(10) were studied . The results show that the finer powder of SnO2 having higher surface activity, the easier agglomeration. The brittle phase of SnO2 was broken in processing. The density, tensile strength, hardness and resistivity of Ag/SnO2 (10) increased gradually with the size of SnO2 decreases. |
