Magnesium-lithium-based alloy
A magnesium-lithium-based alloy contains Mg, Li, and Al, and a sum of a content of the Mg and a content of the Li is 90% by mass or more. The magnesium-lithium-based alloy contains Ge.
1. A magnesium-lithium-based alloy comprising Mg, Li, Al, and Ni, a content of the Ni being more than 0% by mass and less than 0.1% by mass,
wherein a sum of a content of the Mg and a content of the Li is 90% by mass or more,
wherein the alloy further comprises:
a) Ge, or
b) Be, or
c) Ge and Be,
wherein in the case of a) where the alloy comprises the Ge, a content of the Ge is 0.1% by mass or more and less than 1.0% by mass,
wherein in the case of b) where the alloy comprises the Be, a content of the Be is 0.04% by mass or more and less than 3% by mass, and
wherein in the case of c) where the alloy comprises the Ge and the Be, a sum of a content of the Al and a content of the Ge and the Be is 3% by mass or more and 7% by mass or less.
2. The magnesium-lithium-based alloy according to claim 1 , wherein the content of the Li relative to the sum of the content of the Mg and the content of the Li is 0.5% by mass or more and 15% by mass or less.
3. The magnesium-lithium-based alloy according to claim 2 , wherein the content of the Li relative to the sum of the content of the Mg and the content of the Li is 0.5% by mass or more and 11.6% by mass or less.
4. The magnesium-lithium-based alloy according to claim 1 , further comprising Ca, wherein a content of the Ca is 0.1% by mass or more and 2% by mass or less.
5. The magnesium-lithium-based alloy according to claim 1 , wherein a sum of a content of the Ge and Be, a content of the Al, and a content of the Si, P, Zn, and As is 3% by mass or more and 10% by mass or less.
6. The magnesium-lithium-based alloy according to claim 5 , wherein a sum of contents of the Ge, Be, Si, P, Zn, and As is smaller than a content of the Al.
7. The magnesium-lithium-based alloy according to claim 1 , wherein a sum of a content of the Al and a content of the Ge and Be is 3% by mass or more and 7% by mass or less.
8. An optical apparatus comprising a housing and an optical system including a plurality of lenses disposed in the housing,
wherein the housing includes the magnesium-lithium-based alloy according to claim 1 .
9. An imaging apparatus comprising a housing and an imaging device disposed in the housing,
wherein the housing includes the magnesium-lithium-based alloy according to claim 1 .
10. The imaging apparatus according to claim 9 , wherein the imaging apparatus is a camera.
11. An electronic apparatus comprising a housing and an electronic component disposed in the housing,
wherein the housing includes the magnesium-lithium-based alloy according to claim 1 .
12. A moving object comprising a main body and a driving unit,
wherein a housing of the main body includes the magnesium-lithium- based alloy according to claim 1 .
13. The magnesium-lithium-based alloy according to claim 1 , wherein a sum of contents of the Si, P, Zn, and As is smaller than a content of the Al.