Estudo da viabilidade do ensaio pino sobre disco para a avaliação do desgaste da liga amorfa Vitreloy 105

Abstract

The main goal of the present work is to verify the viability of utilizing the pin-on-disk test as means to evaluate the wear resistance of an amorphous alloy denominated Vitreloy 105 (Zr65,7Cu15,6Ni11,7Al3,7Ti3,3), in accordance with the ASTM G99 – Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus. For the execution of the wear test, some adaptations were made to a tribometer designed for the use of spheres instead of pins. Six pairs of samples were used, being both the pins and disks made of Vitreloy 105. The evaluation of the test took place by calculating the wear rates and the surface analysis of the worn regions with a chromatic aberration microscope, obtaining the images of the resulting surface morphology. The results obtained for the wear rates and the surface images analysis were close to those found by other authors, testifying the viability of the use of equipment for future testing.