Wear resistance of Zr-based bulk metallic glass applied in bearing rollers

Bearing rollers, 7.5 mm in diameter and 7.5 mm in length, were prepared from Zr41Ti14Cu12.5Ni10Be22.5 bulk metallic glass (BMG). The working life of the bearing rollers was evaluated through a real rotation test with a large-load and at a high-speed, and compared with that of commercial GCr15 steel rollers. The results show that the bearing rollers of Zr-based bulk metallic glass have a better wear resistance than the commercial GCr15 ones. And the wear behaviors are different for these two kinds of bearing rollers.