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本文初步探讨了液相压制的规律和致密化机理。对实验数据进行回归分析表明,液相密度增量△D(=y),粉末比表面S及液相含量G(G/S=x)之间存在如下指数函数关系: y=ae~(b x) 产生液相密度增量的机理,除了液相的润滑作用、固相在液相中的溶解析出外,由镀铜铁粉和不镀铜铁粉的液相压制对比实验表明,扩散蠕变及液相对固相颗粒表面的活化作用,对液相密度增量有重要影响。
In this paper, the rules and densification mechanism of liquid-phase pressing are discussed preliminarily. The regression analysis of the experimental data shows that the exponential relationship between the liquid density increment ΔD (= y), the powder surface S and the liquid content G (G / S = x) is as follows: y = ae ~ ) Liquid phase density increase mechanism, in addition to the liquid lubrication, the solid phase dissolved in the liquid phase precipitation, the copper-coated iron powder and copper-free iron powder liquid phase comparison experiments show that diffusion creep And the activation of the liquid phase on the surface of the solid particles have an important influence on the increase of liquid density.