【摘要】 研究了W-Ni-Fe高比重合金烧结时的致密化,实验证明W-Ni-Fe合金烧结时的致密化过程具有液相烧结的特征,符合Kjngery提出的方程。目前生产的W-Ni-Fe合金中粘结相常采用Nj:Fe=7:3或Ni:Fe=1:1。针对这两种成分的合金我们研究了不同温度下的收缩率、密度变化与时间的关系,并讨论了其致密化机理。更多还原

【Abstract】 This paper describes the investigation on the densification of W-Ni-Fe high-specific-weight alloys during the sintering, which the experiments have proven to be characterized by the liquid phase sintering and to conform with kingery equation. ★The two nickel-iron ratios (Ni:Fe=7:3, Ni:Fe=1:1) are usually adopted for the bonding phase of W-Ni-Fe alloys. The shrinkage at different temperatures, relationship of density variation with time, and the densification mechanism of the alloys with the two above-mentioned Ni-Fe ratios are investigated and discussed.更多还原