ALUMINA/GRAPHENE COMPOSITE IN FRICTION AND WEAR TESTS - PART II

The presented work is a continuation of tribological research on alumina/graphene composites. In our previous publication the results of wear tests on the above mentioned composite at room temperature, but also at temperatures of 150, 300 and 500 degrees C were presented. The studies showed that this composite is promising in relation to pure alumina at ambient temperature and 150 degrees C. In order to determine more precisely the temperatures at which the tested material can work, abrasion tests were carried out at two additional temperatures, 80 and 200 degrees C, and the results are presented in the following paper. Noticeable plastic deformation and wear greater than at room temperature was detected already at 80 degrees C but it was still significantly lower than at 150 degrees C when the composite wore significantly less than pure alumina. The test carried out in 200 degrees C gave results similar to those for 300 degrees C, which indicates significant degradation of the material at this temperature.