Magnesium-lithium alloy member, manufacturing method thereof, optical apparatus, imaging apparatus, electronic apparatus and mobile object
AssigneeCanon Kabushiki Kaisha
InventorJun-ichi Sakamoto
Life of this patent
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Abstract
Provided is an alloy member including a substrate made of magnesium-lithium alloy with a sum of content of magnesium and content of lithium of 90 mass % or more and a coating film disposed on the substrate. The coating film contains fluorine and oxygen, with a fluorine content of more than 50 atom % and an oxygen content of less than 5 atom %.
Claims12
An alloy member comprising:
- a substrate containing Mg and Li;
- and
- a coating film disposed on the substrate,
- wherein the coating film contains magnesium, lithium, and fluorine, and
- wherein when a fluorine content is represented by M1 atom % and a sum of contents of magnesium and lithium is represented by M2 atom %, a region where M1 is two times or more M2 is formed up to a location 10 μm deep from a surface of the coating film facing away from the substrate in a thickness direction of the coating film.
An alloy member comprising:
- a substrate containing Mg and Li;
- and
- a coating film disposed on the substrate,
- wherein the coating film contains magnesium, lithium, and fluorine, and wherein when a fluorine content is represented by M1 atom % and a sum of contents of magnesium and lithium is represented by M2 atom %, a region where M1 is two times or more M2 is continuously formed up to 20 μm from a surface of the coating film facing away from the substrate in a thickness direction of the coating film.
An optical apparatus comprising a casing and an optical system including a plurality of lenses in the casing, wherein the casing has an alloy member comprising:
- a substrate containing Mg and Li,, and
- a coating film disposed on the substrate,
- wherein the coating film contains magnesium, lithium, and fluorine, and
- wherein when a fluorine content is represented by M1 atom % and a sum of contents of magnesium and lithium is represented by M2 atom %, a region where M1 is two times or more M2 is formed up to a location 10 μm deep from a surface of the coating film facing away from the substrate in a thickness direction of the coating film.
An electronic apparatus comprising a casing and an electronic component in the casing,
- wherein the casing has an alloy member comprising:
- a substrate containing Mg and Li;
- and
- a coating film disposed on the substrate,
- wherein the coating film contains magnesium, lithium, and fluorine, and
- wherein when a fluorine content in is represented by M1 atom % and a sum of contents of magnesium and lithium is represented by M2 atom %, a region where M1 is two times or more M2 is formed up to a location 10 m deep from a surface of the coating film facing away from the substrate in a thickness direction of the coating film.
Dependencies are inferred from the claim text.