Method for surface treatment of metal enclosure
AssigneeHon Hai Precision Ind. Co., Ltd.
InventorWen-Shan Chien
Life of this patent
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Abstract
A method for treating a metal enclosure to prevent the enclosure from being contaminated, comprises the steps of: (a) sand-blasting the enclosure; (b) preheating the enclosure to a predetermined temperature, and putting the enclosure into the space in a vacuum chamber between two electrodes; (c) introducing reactive gases into the vacuum chamber, the reactive gases including 1,1,3,3-tetramethyldisiloxane and oxygen; (d) applying high electrical power to the electrodes to cause the reactive gases to become an ionized plasma, the plasma reacting with a surface of the enclosure to form a layer of silicon oxide thereon. The layer of silicon oxide resists formation of a fingerprint when it is touched by a user.
Claims11
A method for treating a metal enclosure to prevent the enclosure from being contaminated, the method comprising the steps of:
- (a) sand-blasting the enclosure;
- (b) preheating the enclosure to a predetermined temperature, and putting the enclosure into a space in a vacuum chamber between two electrodes;
- (c) introducing reactive gases into the vacuum chamber, said reactive gases comprising 1,1,3,3-tetramethyldisiloxane and oxygen;
- (d) applying high electrical power to the electrodes to cause the reactive gases to become an ionized plasma, said plasma reacting with a surface of the enclosure to form a layer of silicon oxide thereon;
- whereby the layer of silicon oxide resists formation of a fingerprint when it is touched by a user.
Dependencies are inferred from the claim text.