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通过铁合金无压浸渗含镍氧化铝陶瓷的方法,制备了陶瓷/铁合金复合材料.其工艺过程是:将镍粉与陶瓷粉混合球磨后,压制成具有网络结构的陶瓷体,经烧结成瓷后,铁合金无压浸渗,浸渗温度1600℃,保温4h.研究结果表明,含镍陶瓷与铁合金在界面处形成锯齿状的机械啮合,两相之间无过渡层以及微裂纹存在;铁合金中的Fe、Cr元素呈梯度分布在陶瓷基体的金属相中,说明铁合金浸渗到陶瓷基体,浸渗深度可达400μm.最后,利用液态金属的扩散原理分析了浸渗过程.

参考文献

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