Contact material
AssigneeKabushiki Kaisha Toshiba
InventorsTsutomu Okutomi, Atsushi Yamamoto, Iwao Ohshima, Tsuneyo Seki, Mitsutaka Homma, Takashi Kusano
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Abstract
The contact material of the present invention comprises: an anti-arcing constituent consisting of at least one TiC, V and VC of which the content is 30˜70 volume % and whose mean particle (grain) size is 0.1˜9 μm; C whose content is 0.005˜0.5 weight % with respect to the anti-arcing constituent, whose diameter is 0.01˜5 μm when its shape is calculated as spherical, and which is in non-solid solution condition or condition in which it does not form a chemical compound; and a conductive constituent consisting of Cu and constituting the balance.
Claims8
A contact material, comprising:
- an anti-arcing constituent consisting of at least one of TiC, V and VC whose mean particle (grain) size is 0.1˜9 μm and of which the content is 30˜70 volume %;
- C(carbon), in a content of 0.005˜0.5 weight % with respect to said anti-arcing constituent, its diameter being 0.01˜5 μm when its shape is calculated as spherical and being in a non-solid solution condition or condition in which does not form a chemical compound;
- and
- a conductive constituent constituting the balance and consisting of Cu.
Dependencies are inferred from the claim text.