Patent ID: 6511760
Filing Date: 2003-01-28
Classification: C23C,F17C,Y10T

Abstract:
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.