【作者】 赵海燕； 姚中； 虞维扬； 黄剑；

【Author】 ZHAO Hai-yan;YAO Zhong;YU Wei-yang;HUANG Jian Shanghai Iron and Steel Research Institute,shanghai, 200940, China

【机构】 上海钢铁研究所；

【摘要】 本文采用粉末冶金预合金法直接研制FeSiAl材料和FeSiAl 磁头芯片。一般认为采用高Si、Al预合金烧结FeSiAl 合金是典型的液相烧结过程,其致密化主要发生在初级阶段。作者采用电子探针以及透射电镜等方法研究不同烧结温度下的组织变化,发现FeSiAl 烧结致密化过程是非常复杂的,并不如文献所说,高Si、Al 预合金的烧结体中液相对粒子旋转滑动重排起着主导作用,而是在1230～1250℃之间发生烧结体尺寸突变过程的。更多还原

【Abstract】 In this paper, FeSiAl material and FeSiAl magnetic head cores are produced according the prealloyingmethod on the base of powder metallurgy. In general, the sintering process of FeSiAl alloy with high Si and Al contentis the typical liquid phase sintering. The densification process mostly is the primary stage of the liquid phase sintering.The structure changes are studied by EPM and TEM in the different temperature. The densification process of sinteringFeSiAl alloy is very complex. It is not same as the viewpoint of some literature which the liquid phase take leadingeffect in the rotation, slide and rearranging of particle. We think that the dimensions of sintering body rapidly changesbetween 1230℃ and 1250℃.更多还原