highly crystalline silver powder and a method of manufacturing the same

摘要

fine , and good dispersion , particle size ( ) was relatively wide distribution is not too sharp , the highly crystalline silver powder crystallite is greater , and an object thereof is to provide a method of manufacturing the same . In order to achieve this object , silver nitrate , a dispersing agent and a first aqueous solution containing nitric acid , the production method of the highly crystalline silver powder comprising a step of mixing a second aqueous solution containing ascorbic acid . The dispersant is preferably a polyvinylpyrrolidone or gelatin . The highly crystalline silver powder produced by the above method . The crystallite diameter of more than 300, the mean particle diameter D ₅₀ is 0.5 ~ 10 , the heat shrinkage rate in the longitudinal direction at 700 within 3% of the highly crystalline silver powder . The silver powder is , D ₉₀ / D ₁₀ is preferably a 2.1 ~ 5.0.