Platinum-based material thin wire and method for manufacturing the same
AssigneeTanaka Kikinzoku Kogyo K.K.
InventorsYuki Horinouchi, Mitsuo Takada
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Abstract
A platinum-based material element wire is coated with gold or gold alloy, and drawing-processed with a carbon-containing die. The thin wire manufactured in this manner is covered with gold or gold alloy, and the coverage of gold or gold alloy is 40% or more on an area basis. The thin wire formed of a platinum-based material is manufactured in a state of suppressing breakage in a drawing processing step, and has favorable performance in electric properties and the like. In addition, this manufacturing process is capable of efficiently manufacturing a platinum-based material thin wire while suppressing breakage when the thin wire is manufactured by drawing processing.
Claims20
A platinum-based material thin wire having a wire diameter of 10 μm or more and 100 μm or less and formed of platinum or platinum alloy,
- wherein the thin wire is covered with gold or gold alloy,
- a coverage of the gold or gold alloy is 40% or more on an area basis, and
- a degree of circularity on a radial cross-section in an arbitrary longitudinal position is 0.90 or more.
Dependencies are inferred from the claim text.