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Active and durable catalysts for hydrogen evolution reaction (HER) are of great significance for developing renewable hydrogen energy. Herein, crystalline/amorphous‐Ru/VOx (c/a‐Ru/VOx) heterogeneous catalysts are conceived, in which the amorphous VOx exposes more active sites and enhances charge transport compared with the counterpart with a crystal phase structure, strengthening the electronic interaction...
In order to reduce the failure of advanced metal evaporated (AME) tape, novel perfluoropolyether (PFPE) lubricants, Z-TETRAOL and A20H, were deposited on an unlubricated AME tape. The degradation mechanisms of the PFPE lubricants applied on AME tape were studied using a mass spectrometer in high vacuum. The durability of various lubricants was compared using pin-on-disk experiments in high vacuum...
Tribological properties of perfluoropolyether (PFPE) lubricants with different end groups, applied on Si(100) substrate, are investigated. The PFPE lubricant with two hydroxyl groups at each end of the molecular chain (Z-TETRAOL) and another lubricant with a hydroxyl group at one end and a cyclotriphosphazene group at the other end, respectively (A20H) (used by itself and mixed with Z-DOL) are studied...
In this work, the interfacial friction is investigated during a material removal test. Based on specially programmed experiments conducted on 6061 Al at 24 different conditions, it was found that the friction coefficient significantly varies in different temperature ranges. Using optical and transition electron microscopy, these variations were found to be dependent on phase changes within the workpiece...
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