| 摘要 |
<p>A sliding contact material comprising Ag-Ni based alloy having Ni metal particles dispersed for use in a sliding part for practicing electrical make and break by mechanical sliding operations, characterized in that it is prepared by admixing 0.7 to 3.0 wt.% of a Ni powder, 0.01 to 0.50 wt.% in terms of metal of a Li2CO3 powder and the balanced amount of a Ag powder, followed by agitating, to form a homogeneously dispersed admixture, and subjecting the admixture to a forming treatment and a sintering treatment. The sliding contact material has an alloy composition having no hazardous materials such as Cd, is excellent particularly in contact resistance characteristics, exhibits good electrical functions, is free from the change with the elapse of time, and further has an abrasion resistance being practically similar or superior to those of conventional sliding contact materials. The sliding contact material, which has excellent durability, can be used in a commutator of a DC compact motor in order to prolong the useful life of the motor.</p> |
