Mechanical Property of Dissimilar Material Nanocomposites Prepared by Ion Beam Assisted Sputtering Process(Physics, Processes, Instruments & Measurements)

概要

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To study the property tailoring effect of dissimilar material composites, Ti-B-N films were synthesized by an ion beam assisted sputtering system. Structural analysis and mechanical property evaluation were carried out to check whether or not the presence of h-BN in TiB_2-based material is capable of producing better anti-wear performance. The Ti-B-N films were found to have a structure which comprised nanosized TiB_2 and TiN crystallites and a thin layer matrix of hexagonal boron nitride. Compared with pure TiB_2, improved tribological properties were observed for the Ti-B-N films. Bombarding energy and substrate temperature were found to have great influence on the film properties. When the bombarding energy was around 150eV and the growth temperature was about 100℃, the wear rate of Ti-B-N film was about two orders lower than that of pure TiB_2 film. Also, films synthesized under this condition displayed higher load-bearing capacity and smaller friction coefficient.
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