【摘要】 本文采用颗粒化学镀的方法制备Ｎｉ／ＰＴＣ陶瓷复合材料，获得了两相分布均匀的复合粉料，确定了最佳的施镀工艺条件，提出在弱还原气氛中一次烧结，制备低室温电阻率且具有ＰＴＣ效应的复合材料的新方法。更多还原

【Abstract】 In order to obtain uniformly distributed composite powder, Ni/PTC ceramic composite was prepared by a new electroless plating method. The influence of the chemical composition, the pH value and temperature in the plating bath on the reaction speed had been investigated and the optimum technological parameter was determined. A new manufacturing method in weaker reduction atmosphere and by one step sintering was put forward and by which the Ni/PTC ceramic coposites with low resistivity at room temperature and with PTC effect were prepared.更多还原