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US 11,965,228 B2Granted
Resistive material, resistor, and manufacturing method of resistive material
AssigneeKoa Corporation
InventorsShuhei Matsubara, Keishi Nakamura
Life of this patent
Estimating the term…
Abstract
The resistive material for sensing current contains: metal particles selected from a group consisting of nichrome, copper-manganese, and copper-nickel; insulating particles selected from a group consisting of alumina, aluminum nitride, silicon nitride, and zirconia; and titanium oxide.
Claims9
A resistive material comprising:
- metal particles selected from a group consisting of nichrome, copper-manganese, and copper-nickel;
- insulating particles selected from a group consisting of alumina, aluminum nitride, silicon nitride, and zirconia;
- and titanium oxide, wherein the insulating particles are surrounded by a metal body, the metal body being formed by the metal particles brought into contact with each other, and the titanium oxide is at least dispersed in the metal body.
A manufacturing method of a resistive material comprising:
- a step of mixing an insulating powder having an insulating property, a metal powder having an electrically conductive property, and titanium oxide powder;
- and
- a step of sintering a mixed powder obtained by the mixing step at a predetermined temperature under pressure, the predetermined temperature being lower than melting point of the metal powder, wherein the metal powder includes metal particles and the insulating powder includes insulating particles, and the metal particles are sintered around the insulating particles to form a three-dimensional network enclosing the insulating powder.
Dependencies are inferred from the claim text.