Experimental Investigation on Dewaxed Tungsten Carbide-Based Self-lubricant Cutting Tool Material
In this paper, an attempt has been made to characterize the dewaxed tungsten carbide-based self-lubricant cutting tool material. In the course of characterization, crystalline size, particle size and morphological analysis were carried out using X-ray diffraction (XRD), transmission electron microscope (TEM) and scanning electron microscope (SEM), respectively. The XRD result confirms that the intensity of the diffraction peaks broadened for 40 h of milling as compared to raw powder sample. The result reveals the fracture resistance of beyond 40-h-milled particles increased, as strong cohesion between small particles occurs. The SEM analysis reveals the homogenously rounded grains of tungsten Carbide-Cobalt-5 wt% Calcium Fluoride system with 4 wt% stearic acid after 40 h of milling. The TEM analysis showed the homogeneous distribution of tungsten carbide particles in the considered milled samples in 40 h with the minimum possibility of agglomeration as compared to 100-h-milled powders.
KeywordsTungsten carbide Ball milling Dewaxing TEM and SEM
Authors wish to thank Aerospace Manufacturing and Value Engineering Panel of ARDB, India (DARO/08/1103/M/I), for funding this project. Authors also wish to thank his supervisor Prof. Dr. S. Senthilvelan and Professor Dr. PS. Robi, IIT Guwahati, and Centre for Instrument Facility, IIT Guwahati, for their kind assistance.
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