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The carburized graded cemented carbide with the addition of some(Ti,Ta) C was analyzed in detail.The micro-structure and element distribution were measured by using optical microscopy and X-ray photoelectron spectrometry along the gradient direction.The experimental results showed that a large amount of solid solution phases were formed and distributed like clusters in the surface layer of cemented carbide.The cobalt migration was not very notable and the Co-rich layer was close to the surface of cemented carbide.
The carburized graded cemented carbide with the addition of some (Ti, Ta) C was analyzed in detail. The micro-structure and element distribution were measured by using optical microscopy and X-ray photoelectron spectrometry along the gradient direction. The experimental results showed that a large amount of solid solution phases were formed and distributed like clusters in the surface layer of cemented carbide. The cobalt migration was not very not able and the Co-rich layer was close to the surface of cemented carbide.