For a high-chromium steel as substrate

WC particles as enhanced particles

joined by steel powder and high-carbon chrome iron powder separately to adjust the composition of Perform layers

using the way of the V-EPC infiltration

which are used to make WC-particle reinforced steel-based metal matrix composites and to research what effect the presetting components on the interface of the composite material. The results show that: the alloy powder particle size of the perform layer will have an impact on the WC particles and matrix interface. The steel powder of 400 meshes ability of molten is better than the high-carbon chrome iron powder of 160

2

00 meshes’

so it’s advantaged for forming matrix interface. Layer of perform steel alloy powder for steel powder

between the composite layer and the matrix was no obvious transition

have micro-cracks; for the high carbon chrome iron powder

composite layer and the substrate transition between the gentle

no micro-cracks and holes.