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一、引言 烧结是粉末冶金的关键工序,是粉末冶金工艺的主要组成部份。粉末成形所得的坯料,在低于粉末金属熔点温度下进行加热,使粉末颗粒之间产生原子扩散,固熔,化合和熔接,致使坯料产生收缩并强化的过程,称之为烧结。所谓真空垂熔烧结,是真空电阻烧结的一种烧结方法。真空烧结坯料的性能,通常比在保护气氛下烧结的要高。坯料通过烧结变成了
First, the introduction Sintering is the key process of powder metallurgy, powder metallurgy process is the main component. The billet obtained by powder forming is heated at a temperature lower than the melting point of the powder metal to cause atom diffusion, solid melt, compounding and welding between the powder particles, resulting in shrinkage and strengthening of the billet, which is called sintering. The so-called vacuum vertical sintering, vacuum sintering is a sintered sintering method. Vacuum sintering billet performance, usually higher than the protective atmosphere sintering. The billet becomes by sintering