Ceramic-metal composite bodies
AssigneeNGK Insulators, Ltd.
InventorsIsao Oda, Takao Soma
Life of this patent
Estimating the term…
Abstract
Ceramic-metal composite bodies are disclosed, which are each formed by joining a projection on a ceramic member to a recess or a through hole formed in a metallic member together. A groove portion is provided substantially all around the outer periphery of the metallic member such that a fitting end of the metallic member is located in a position corresponding to the groove portion. A difference between a diameter of a bottom of the groove portion and an outer diameter of the projection of the ceramic member is 0.05 to 0.8 times as large as a difference between an outer diameter of the metallic member and the outer diameter of the projection of the ceramic member.
Claims10
A ceramic-metal composite body comprising:
- a ceramic member including a ceramic projection formed thereon;
- a metallic member including a recess or through hole formed in one end thereof, said ceramic member and said metallic member being joined together only at a single, continuous contact surface between said members, said ceramic protrusion being fitted into said metallic recess or through hole, said contact surface having a fitting end defined by the beginning of said contact surface proximate said one end of said metallic member;
- and
- a circumferential groove in the outer periphery of said metallic member located substantially in a plane normal to the axis of said metallic member, and extending substantially completely around said metallic member, a center line of said groove and said fitting end being located substantially an equal distance from said one end of said metallic member.
A ceramic-metal composite body comprising:
- a ceramic member including a ceramic projection formed thereon;
- a metallic member including a recess or through hole formed in one end thereof, said ceramic member and said metallic member being joined together only at a single, continuous contact surface between said members, said ceramic protrusion being fitted into said metallic recess or through hole, said contact surface having a fitting end defined by the beginning of said contact surface proximate said one end of said metallic member;
- and
- a circumferential groove in the outer periphery of said metallic member located substantially in a plane normal to the axis of said metallic member, and extending substantially completely around said metallic member, a center line of said groove and said fitting end being located substantially an equal distance from said one end of said metallic member;
- wherein a difference between a diameter of a bottom of said groove and an outer diameter of said projection is 0.05 to 0.8 times as larger as a difference between an outer diameter of said metallic member and said outer diameter of said projection.
Dependencies are inferred from the claim text.