Počet záznamů: 1  

Effect of phosphating time on protection properties of hurealite coating: Differences between ground and shot peened HSLA steel surface

  1. 1.
    0508085 - ÚFM 2020 RIV CH eng J - Článek v odborném periodiku
    Hadzima, B. - Pastorek, F. - Borko, K. - Fintová, Stanislava - Kajánek, D. - Bagherifard, S. - Gholami-Kermanshahi, G. - Trško, L. - Pastorková, J. - Brezina, J.
    Effect of phosphating time on protection properties of hurealite coating: Differences between ground and shot peened HSLA steel surface.
    Surface and Coatings Technology. Roč. 375, OCT (2019), s. 608-620. ISSN 0257-8972
    Grant CEP: GA MŠMT(CZ) EF16_013/0001823
    Institucionální podpora: RVO:68081723
    Klíčová slova: surface treatment * phosphating * HSLA steel * electrochemical impedance spectroscopy * shot peening
    Obor OECD: Coating and films
    Impakt faktor: 3.784, rok: 2019
    Způsob publikování: Omezený přístup
    https://www.sciencedirect.com/science/article/pii/S0257897219307960

    Shot peening is a standard surface treatment primarily used for enhancement of fatigue properties of metallic
    materials. However, its influence on surface properties is so radical, that subsequent techniques of surface
    treatment used on the shot peened surface need to be reconsidered in order to minimize the possible negative
    side effects of shot peening. In this case, the differences between hurealite formation on the ground and shot
    peened surfaces of modern high strength low alloy (HSLA) steel were evaluated by morphological and electrochemical
    corrosion observations and measurements. The surface morphologies of the formed coatings were
    observed by the scanning electron microscopy (SEM) and analysed by energy-dispersive X-ray analysis (EDX).
    The corrosion resistance of the HSLA steel with hurealite coating was evaluated using electrochemical impedance
    spectroscopy (EIS) by the analysis of Nyquist plots obtained in 0.1M NaCl solution after various
    phosphating times on both types of pre-treated surfaces (ground and shot peened). The results showed that used
    technique of shot peening negatively influenced the phosphating process by prolonging the phosphating process
    in order to reach the coating with maximal protection properties in tested medium. Moreover, shot peened
    surface caused significantly enlarged size of the hurealite crystals and greater thickness of the coating compared
    to the surface pre-treated by grinding on the tested HSLA steel at the expense of a lower compactness and
    corrosion protection.

    Trvalý link: http://hdl.handle.net/11104/0299691

     
     
Počet záznamů: 1  

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