화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.88, No.11, 3270-3274, 2005
Tribophysical properties of polycrystalline bulk Ti3AlC2
A nearly pure, dense, polycrystalline bulk Ti3AlC2 sample was prepared by reactively hot pressing the element titanium, aluminum, and graphite powders. The tribophysical properties were investigated by sliding a Ti3AlC2 block dryly against a low-carbon steel disk. It was found that the friction coefficient is as low as similar to 0.1, and the wear rate of Ti3AlC2 is only similar to 2.5 x 10(-6) mm(3)/N(.)m for the highest sliding speed of 60 m/s and the largest normal pressure of 0.8 MPa. These unusual properties are attributable to the presence of a compact self-generating film, which covers uniformly over the friction surface of Ti3AlC2 with a thickness of similar to 0.5 mu m.