Morphology of powders of tungsten carbide used in wear-resistant coatings and deposition on the PDC drill bits

13th International Conference on Films and Coatings

Zakharova, E.S.^1 ; Markova, I.Yu.^1 ; Maslov, A.L.^1 ; Polushin, N.I.^1 ; Laptev, A.I.^1

National University of Science and Technology MISiS, Moscow, Russia^1

关键词: A-particles;    Carbide particles;    Metal matrices;    Protective layers;    Wear resistance coatings;    Wear resistant;    Wear-resistant coating;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/857/1/012058/pdf
DOI  :  10.1088/1742-6596/857/1/012058

来源: IOP

【 摘 要 】

Modern drill bits have high abrasive wear in the area of contact with the rock and removed sludge. Currently, these bits have a protective layer on the bit body, which consists of a metal matrix with inclusions of carbide particles. The research matrix of this coating and the wear-resistant particles is a prerequisite in the design and production of drill bits. In this work, complex investigation was made for various carbide powders of the grades Relit (tungsten carbide produced by Ltd "ROSNAMIS") which are used as wear-resistant particles in the coating of the drill bit body. The morphology and phase composition of the chosen powders as well as the influence of a particle shape on prospects of their application in wear-resistance coating presented in this work.