Heater and glow-plug provided therewith
AssigneeKYOCERA Corporation
InventorAkio Kobayashi
Life of this patent
Estimating the term…
Abstract
A heater of the disclosure includes: a rod-like ceramic body; a heat-generating resistor including an embedded portion embedded in the ceramic body and an exposed portion drawn out to an outer periphery face of the ceramic body; a metallic member electrically connected to the heat-generating resistor; and a conductive joining member including titanium, the conductive joining member being configured to join the exposed portion and the metallic member together. The conductive joining member includes a first portion in layer form, in which titanium exists in segregation condition, located along an interface with the exposed portion; and at least one second portion in granular form, in which titanium exists in segregation condition, located away from the first portion.
Claims6
A heater comprising:
- a ceramic body having a rod-like shape;
- a heat-generating resistor comprising an embedded portion embedded in the ceramic body and an exposed portion drawn out to an outer periphery face of the ceramic body;
- a metallic member electrically connected to the heat-generating resistor;
- and
- a conductive joining member that joins the exposed portion and the metallic member together, wherein the conductive joining member comprises:
- a first portion in layer form, in which titanium exists in segregation, located along an interface with the exposed portion;
- and
- at least one second portion that comprises a Cu—Ti—O compound in which copper and titanium exist in segregation, wherein the at least one second portion is located away from the first portion and is in a granular form that is different than the layer form.
Dependencies are inferred from the claim text.