Corrosion resistance structure of ceramic heater and gas...

Details Corrosion resistance structure of ceramic heater and gas... Corrosion resistance structure of ceramic heater and gas...

2006-07-18

2006-07-18

Fuqua, Shawntina (Department: 3742)

Electric heating

Heating devices

With heating unit structure

C219S209000, C219S270000, C219S469000, C219S523000, C219S541000, C219S553000, C219S535000, C204S424000, C204S426000, C204S428000

Reexamination Certificate

active

07078659

ABSTRACT:
A ceramic heater is provided which may be employed in a gas sensor. The ceramic heater includes a heating element disposed inside a ceramic body, a connector assembly, and a cover coating. The connector assembly consists of an external terminal, a connector terminal, and a metallic joint layer. The external terminal is affixed to an outer surface of the ceramic body in electrical connection with the heating element. The joint layer is formed on the external terminal to establish an electrical joint between the external terminal and the connector terminal. The cover coating is wrapped over a surface of the connector assembly and made of a metallic material containing a main component of one of Au, Pt, and Cr, thereby ensuring a corrosion resistance of the connector assembly.

REFERENCES:
patent: 4512871 (1985-04-01), Kato et al.
patent: 6118110 (2000-09-01), Kobayashi et al.
patent: 6121590 (2000-09-01), Kobayashi et al.
patent: 11-292649 (1999-10-01), None

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