Previous studies have indicated that by coating steel in multiple layers with a cemented carbide alloy powder using the spark plasma sintering process, the thermal stress between steel and cemented carbide is eased and a composite material without cracking and peeling can be produced.
As an evaluation of the above material's wear resistance, a Blast Erosion Test as well as a High Pressure Water Erosion Wear Resistance Test were carried out. For the Blast Erosion Test, which is a good test of water of wear resistance relative to the hardness of the material, the composite material with residual stress and fine grain size, was shown to have excellent wear resistance. However, in the High Pressure Water Erosion Test, owing to the occurrence of cracks, this same material of low elasticity did not show superiority to any other materials.