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S. P. Lau - One of the best experts on this subject based on the ideXlab platform.

  • Low stress thick diamond-like carbon Films prepared by filtered arc deposition for tribological applications
    Surface and Coatings Technology, 2002
    Co-Authors: D. Sheeja, Beng Kang Tay, L. G. Yu, S. P. Lau
    Abstract:

    Low stress diamond-like carbon Film, 3.1 μm thick, has been deposited using the filtered cathodic vacuum arc (FCVA) technique in conjunction with substrate pulse biasing. This single Layer Film has been analysed for its intrinsic stress, microstructure, tribological behaviour and morphology. The tribological characterisation of the Film reveals that it exhibits low coefficient of friction and wear rate of approximately 0.084 and 6.7x10-8 mm3/N-m, respectively, against sapphire. This investigation suggests that the Film prepared by the above method is a suitable candidate for the fabrication of micro-electro-mechanical devices such as micro motors and actuators, where friction and wear are of major concern. © 2002 Elsevier Science B.V. All rights reserved.

Lin X Chen - One of the best experts on this subject based on the ideXlab platform.

Martin Sarret - One of the best experts on this subject based on the ideXlab platform.

  • Nature of the passive Film formed at a zinc anode in zinc-nickel containing solutions
    Journal of Electroanalytical Chemistry, 1998
    Co-Authors: A.b Velichenko, Martin Sarret
    Abstract:

    The main aim of this study was to obtain information about the nature of the passive Film formed on the zinc anode surface in Ni-containing solutions by chronopotentiometry, SEM, X-ray microanalysis, XPS and SIMS. It was shown that, with an external anodic current, passive Film formation was a result of space-sharing anodic and cathodic reactions due to local Ni or Zn-Ni alloy electrodeposition. As a result, a Film of two Layers was formed on the Zn anode: Zn substrate|2NixZn (x > 1) + Zn(OH)2|NiZn + Zn(OH)2. At the rest potential a one-Layer Film was formed consisting of Zn substrate|2Ni2Zn + Zn(OH)2. © 1998 Elsevier Science S.A. All rights reserved.

Hajime Kiyono - One of the best experts on this subject based on the ideXlab platform.

  • Preparation and wear resistance of TiBC, TiBN, SiNx single Layer Film and TiBC-SiNx and TiBN-SiNx double Layer Film by thermal plasma CVD
    Journal of The Japan Society of Powder and Powder Metallurgy, 2007
    Co-Authors: Yusuke Fuji, Shiro Shimada, Hajime Kiyono
    Abstract:

    Monolithic (TiBC, TiBN, SiNx) and double Layered Films (TiBC-SiNx, TiBN-SiNx) were deposited on Si wafers or WC-Co substrates at about 800°C from a hexamethyldisiloxane, titanium tetra-ethoxide or tri-ethoxy borate solution and their mixed solution by thermal plasma chemical vapor deposition. The Films were characterized by thin Film X-raydiffractmetry (XRD), X-ray photoelectron spectroscopy, scanning electron microscopy, EDS analysis and the cutting tests. XRD indicated that TiBC and TiBN phases were crystalline, but SiNx was amorphous. Thickness of under-Layered TiBC or TiBN and over-Layered SiNx in the double Layered Films was 0.5 and 2-4μm, respectively. The cutting tests for the double Layered Film deposited on WC-Co showed that the double Layered TiBC-SiNx and TiBN-SiNx Films possessed the good wear resistance comparable to or higher than the commercial TiN Film deposited on WC-Co prepared by thermal CVD, in terms of crater and flank wear resistances.

Tsuchida Kazuhiro - One of the best experts on this subject based on the ideXlab platform.

  • metal surface treatment agent surface treated steel material surface treatment method therefor painted steel material and production method therefor
    2013
    Co-Authors: Tsuchida Kazuhiro
    Abstract:

    PROBLEM TO BE SOLVED: To provide a chromate-free metal-surface treatment agent which is most suitable for metal, particularly for a metal-coated steel material, does not contain chromium, and can impart excellent workability, adhesiveness and corrosion resistance to the metal when having been used as pretreatment for the coating of paint or the like; a surface-treated steel material which has been surface-treated with the treatment agent and surface treatment method therefor; and a painted steel material having an upper Layer Film thereon and a production method therefor. SOLUTION: The metal-surface treatment agent has a silane coupling agent containing a coordinating functional group as an indispensable component, and is formed by dissolving the silane coupling agent in water and/or an organic solvent. COPYRIGHT: (C)2010,JPO&INPIT