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一、前言对铸渗表面复合材料而言,无疑液态金属在粒子间的运动能力决定着复合层的厚度,对复合层的质量产生直接影响。渗流物理的试验表明,渗流量(J)与压力梯度间的定量关系,即J=k((?)p/(?)x),对解决一系列工程问题有积极作用。对于金属液在粒子间的渗透,不仅是一传质,伴随强烈的热交换过程,而且粒子在热作用下可能分解。利用这些复杂的物理化学现象可获得优质的表面复合层和铸件。本工作试图
I. Introduction For the infiltration of surface composites, there is no doubt that the movement of liquid metal between particles determines the thickness of the composite layer, which has a direct impact on the quality of the composite layer. The experimental results of seepage physics show that the quantitative relationship between seepage volume (J) and pressure gradient, ie, J = k ((?) P / (?) X), has a positive effect on solving a series of engineering problems. The penetration of liquid metal between particles is not only a mass transfer, accompanied by a strong heat exchange process, but also the particles may decompose under the action of heat. The use of these complex physical and chemical phenomena to obtain high-quality surface layers and castings. This work tries