Chromizing over cathodic arc coating

    公开(公告)号:US10364490B2

    公开(公告)日:2019-07-30

    申请号:US15103761

    申请日:2014-11-19

    摘要: The present invention provides a Cr-rich cathodic arc coating, an article in turbine blade coated with the chromizing over cathodic arc coating, and a method to produce the coating thereof. The Cr-rich cathodic arc coating in the present invention comprises a cathodic arc coating and a diffusion coating deposited atop the cathodic arc coating to enforce hot corrosion resistance. The hardware coated with the chromizing over cathodic arc coating in the present invention is reinforced with superior-hot corrosion resistance. The present invention further provides a novel method for producing the chromizing over cathodic arc coating by re-sequencing coating deposition order. The method in the present invention is efficient and cost-reducing by eliminating some operations, e.g., DHT and peening, between the cathodic arc coating and the diffusion coating. The hot corrosion resistance in the present invention results from the high Cr content in the surface of the coating.

    Chromization of steels by gas process
    5.
    发明授权
    Chromization of steels by gas process 失效
    通过气体处理对钢进行铬化

    公开(公告)号:US4357182A

    公开(公告)日:1982-11-02

    申请号:US258822

    申请日:1981-04-29

    申请人: Robert Leveque

    发明人: Robert Leveque

    CPC分类号: C23C12/00

    摘要: A process for the chromization by gas of steels containing more than 0.2% of carbon, consisting of three successive treatments, the chromization treatment proper employing a cement having a ferrochrome base containing between 1% and 3% of carbon, and preferably 2%. The process is particularly useful in the chromization of structural and tool steels.

    摘要翻译: 含有大于0.2%碳的钢的气体的铬化方法,由三个连续的处理组成,铬化处理适用于具有含1%至3%碳的铬铁矿的水泥,优选2%。 该方法在结构和工具钢的铬化中特别有用。