On the infiltration of metal matrix composites
On the infiltration of metal matrix composites
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DOI：
10.1007/bf02668570
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发表时间：
1987-06
期刊：
影响因子：
--
通讯作者：
A. Mortensen;J. Cornie
中科院分区：
文献类型：
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作者：
A. Mortensen;J. Cornie
其中OrLA是液体金属/气氛界面能，气氛是在渗透之前存在于纤维周围的任何气体或液体; K是该界面处的曲率，并且0是接触角。一般情况下，K是未知的，并假设有关的几何分布的增强：纤维被假定为躺在一个正方形网格，一个六边形网格等，然后K计算为曲率在最靠近收缩之间的纤维，在假定的几何纤维分布。虽然这种方法是严格正确的，但它存在几个缺点：1。对于Eq. [1]为了正确起见，术语O 'LACOS 0必须等于O' FA-O 'LF，即纤维/大气界面能和纤维/液态金属界面能之差。如果存在完全润湿，则0为零，并且不遵守该关系，因为此时trLA小于~ rFA-CrLF，因此”cos 0”必须大于1。(The完全不润湿的情况下，即CrLA<（0 ′ FL-CrFA），没有实际意义。第八章）
P= O'LAK COS 0[1] where OrLA is the liquid metal/atmosphere interfacial energy, the atmosphere being any gas or liquid present around the fibers prior to infiltration; K is the curvature at that interface, and 0 is the contact angle. In general, K is unknown, and assumptions are made regarding the geometrical distribution of the reinforcement: fibers are assumed to lie on a square grid, a hexagonal grid, etc. K is then calculated as the curvature at the narrowest constriction between the fibers, in the assumed geometrical fiber distribution. Although this approach is rigorously correct, it presents several drawbacks:1. For Eq.[1] to be correct, the term O'LA COS 0 must be equal to O'FA--O'LF, the difference between the fiber/atmosphere and fiber/liquid metal interfacial energies. If there is perfect wetting, 0 is zero and this relationship is not obeyed since trLA is then less than~ rFA--CrLF, and hence" cos 0" must be greater than one.(The case of perfect non-wetting, ie, CrLA<(O'FL--CrFA), is of no practical importance. 8)