【摘要】 通过对Fe-Ti-C三元粉末混合物压坯的加压成形过程的研究,分析了影响粉末压坯电导性的因素。实验表明:压坯的电阻率与其孔隙率呈近似的线性关系变化,且随孔隙率的增大而增加。当压坯经1250℃烧结后,其电导性的变化和体积的变化符合Kirkendall效应。更多还原

【Abstract】 The factors that affect the conductibility of green compact were analyzed. In order to study the effects of composition on conductibility, the compacts with 0%Ti, 20%Ti, 32%Ti, 44%Ti, 56%Ti were made up. The blocks were vacuum-sintered at 1 250 ℃ for studying the difference of conductibility of compacts after sintering. The result shows that the conductibility of green compact goes down with the increase of compact porosity and Ti content. At mean time, the change of compact in conductibility and sizes after sintering at 1 250 ℃ could be explained by Kirkendall effect. 更多还原