Ceramic joint body, method for manufacturing ceramic joint body, stator for flow channel switching valve, and flow channel switching valve
AssigneeKYOCERA Corporation
InventorShoichi Ota
Life of this patent
Estimating the term…
Abstract
The ceramic joint body according to the present disclosure includes: a first member made of ceramic and including a first flow channel configured to feed fluid; and a second member made of ceramic and including a second flow channel connected to the first flow channel to feed the fluid. The ceramic includes zirconium oxide and aluminum oxide, and at least one of the zirconium oxide and the aluminum oxide is a primary constituent, and a first opposing surface of the first member, which faces the second member, and a second opposing surface of the second member, which faces the first member, are connected by diffusion bonding.
Claims13
A ceramic joint body, comprising:
- a first member made of ceramic and comprising a first flow channel configured to feed fluid;
- and
- a second member made of ceramic and comprising a second flow channel connected to the first flow channel to feed the fluid;
- wherein the first member has a cross section that widens toward the second member,
- wherein the ceramic comprises zirconium oxide and aluminum oxide and at least one of the zirconium oxide and the aluminum oxide is a primary constituent, and
- a first opposing surface of the first member and a second opposing surface of the second member are directly connected by diffusion bonding, the first opposing surface facing the second member, the second opposing surface facing the first member.
A method for manufacturing a ceramic joint body that comprises a first member made of ceramic having a first flow channel configured to feed fluid, and a second member made of ceramic having a second flow channel connected to the first flow channel to feed the fluid, the first member having a cross section that widens toward the second member, the method comprising:
- forming a plurality of pin insertion holes that each extend through a first compact and a second compact as precursors of the first member and the second member before burning;
- burning the first member and the second member;
- bonding a first opposing surface of the first member directly to a second opposing surface of the second member, the first opposing surface facing the second member, the second opposing surface facing the first member;
- inserting pins for positioning into the plurality of pin insertion holes;
- and
- pressing the first member and the second member in a thickness direction after the bonding, and applying thermal treatment to the first member and the second member.
Dependencies are inferred from the claim text.