Improving the tribological performance of WC-Co hard metal surfaces by Laser Surface TexturingTuesday (27.09.2016) 15:30 - 15:45 Part of:
Cemented tungsten carbide (WC-Co) hard metals are forefront materials, which are wear-resistant, refractory materials made up of small carbide particles embedded in metallic binder. WC-Co hardmetal is not only widely used in industry as cutting tool materials but also used as precision parts used in the medical, electronic, aerospace and automobile industries. Surface modification is a frontier research which is beneficial to improve the tribological performances of the contact surfaces. Laser Surface Texturing (LST) is an effective and precise method to modify WC-Co hard metal surfaces at the micron-scale. In this work, the Direct Laser Interference Patterning Technique (DLIP) is used to produce periodic surface patterns with well-defined dimensions on the WC-Co hardmetal surfaces. The frictional properties of as-produced line-like patterns are tested using a commercial ball on disk tribometer. The production of the line-like patterns is described, and the results of their frictional tests are presented within this paper.