Influence of magnetic-abrasive treatment on wear resistance of WC-Co hard alloy plates with diffusion coating based on TiC

摘要

The mechanism and level of the effect of magnetic-abrasive treatment (MAT) on the wear resistance of WC-8 Co hard alloy inserts have been studied. MAT was carried out on hard alloy inserts before and after coating deposition. The results of local X-ray and electron microscopic analyses have been discussed. It has been established that TiC coating deposited by CVD after MAT contains iron. The transition (coating-matrix) layer is narrower as compared with the literature data and contains more iron than the coating and matrix. The mechanism of the effect of MAT on the wear resistance of inserts with the diffusion coatings is proposed. The results upon the effect of MAT of insert coatings on their wear resistance are discussed as well. The highest level of strengthening has been achieved by treatment using the following scheme: magnetic abrasive treatment + chemical vapor deposition + magnetic abrasive treatment (MAT+CDV+MAT).