METHOD FOR PRODUCING A TITANIUM NITRIDE COATING ON THE SURFACE OF A TITANIUM OR TITANIUM ALLOY SUBSTRATE

    公开(公告)号:US20240044035A1

    公开(公告)日:2024-02-08

    申请号:US18258341

    申请日:2021-12-16

    Applicant: Brembo S.p.A.

    CPC classification number: C25D11/26 C25D11/024

    Abstract: A method for producing a titanium nitride coating on the surface of a titanium or titanium alloy substrate may include: a) immersing the titanium or titanium alloy substrate as an electrode in a non-aqueous electrolyte comprising an ionic liquid having nitrogen ions in the presence of a counter electrode; and b) activating an electrochemical process of nitriding the substrate by applying an electric potential between the electrode, and the counter electrode, to generate an anodic electric current to decompose the nitrogen ions by releasing the nitrogen contained therein. The liberated nitrogen penetrates the titanium or titanium alloy substrate until it leads to the conversion to titanium nitride of a surface layer of the substrate, thereby generating a nitrided diffusion surface layer that forms a nitrided surface coating. The electric potential and/or the anodic electric current are modulated in time according to the desired thickness for the nitrided surface coating.

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