Back to results
US 11,180,832 B2Granted
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
Estimating the term…
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 %.
Claims13
An alloy member comprising:
- 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, wherein the coating film contains fluorine and oxygen, with a fluorine content of at least 64 atom %, and an oxygen content of less than 5 atom %.
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 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, wherein the coating film contains fluorine and oxygen, with a fluorine content of at least 64 atom %, and an oxygen content of less than 5 atom %.
A method for manufacturing an alloy member, comprising:
- providing a substrate made of magnesium-lithium alloy with a sum of content of magnesium and content of lithium of 90 mass % or more;
- disposing a cathode substrate and the substrate made of magnesium-lithium alloy as an anode in an aqueous solution of neutral ammonium fluoride;
- and
- applying a voltage between the anode and the cathode to dispose a coating film on the substrates;
- wherein the coating film contains fluorine and oxygen, with a fluorine content of at least 64 atom % and an oxygen content of less than 5 atom %.
2 more elements
Dependencies are inferred from the claim text.