Method of passivating a gas vessel or component of a gas transfer system using a silicon overlay coating

  • US 6,511,760 B1
  • Filed: 02/26/1999
  • Issued: 01/28/2003
  • Est. Priority Date: 02/27/1998
  • Status: Expired due to Term
First Claim
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1. A method of passivating the interior surface of a gas storage vessel to protect the surface against corrosion, comprising the steps of:

  • a) dehydrating the interior surface of the vessel;

    b) evacuating the interior of the vessel;

    c) introducing a silicon hydride gas into the vessel;

    d) heating and pressurizing the silicon hydride gas in the vessel;

    e) depositing a layer of silicon on the interior surface of the vessel;

    f) controlling the duration of the silicon depositing step to prevent the formation of silicon dust in the vessel;

    g) purging the vessel with an inert gas to remove the silicon hydride gas;

    h) cycling the vessel through steps b-g until the entire interior surface of the vessel is covered with a layer of silicon;

    i) evacuating the vessel; and

    , j) cooling the vessel to room temperature.

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