Method of making oxide film by anodizing magnesium material
First Claim
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1. A method of making an oxide film, the method comprising:
- immersing an object into an electrolyte, the object being made of magnesium or a magnesium alloy; and
forming an oxide film on the object in the electrolyte by anodizing;
wherein the electrolyte comprises insoluble particles and alkali metal hydroxide, the oxide film taking in the insoluble particles as growing on the object.
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Abstract
An oxide film is formed on an object made of a magnesium material. For the film formation, the object is immersed into an electrolyte that contains insoluble particles and alkali metal hydroxide. In the electrolyte, the object is anodized to be coated with an oxide film. In the presence of the insoluble particles dispersed in the electrolyte, the oxide film takes in nearby particles as it is growing on the object during the anodizing process.
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13 Claims
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1. A method of making an oxide film, the method comprising:
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immersing an object into an electrolyte, the object being made of magnesium or a magnesium alloy; and
forming an oxide film on the object in the electrolyte by anodizing;
wherein the electrolyte comprises insoluble particles and alkali metal hydroxide, the oxide film taking in the insoluble particles as growing on the object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A housing comprising:
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a housing body made of a magnesium material; and
an oxide film formed on the body;
wherein the oxide film contains particles made of at least one of alumina, aluminum hydroxide, silica, titanium oxide, and ceramic oxide, the particles being taken into the oxide film when the film is caused to grow on the body by anodizing.
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Specification