| 摘要 |
PURPOSE:To evenly cover the powder particles with the noble metals formed through cementation reaction adding the solution containing noble metals to the mixture comprising adding the powder of metals (alloys) less noble than noble metals to sintering powder. CONSTITUTION:Powder of metals or alloys such as of copper, tin, etc. being less noble than noble metals to metal sulfide powder, carbon powder, active carbon powder, metal carbide powder and metal oxide powder. The solution containing noble metals such as aqueous silver nitrate solution or the like is added to this mixture under stirring to cover the powder particles with the noble metals formed through cementation. This process yields the powder evenyl plated with noble metals such as silver. Pressure molding this powder followed by sintering enables the sintered body having the mesh form silver layer of a uniform width having no discontinuity to be obtained. |
