US 5,209,525 A · Bonded ceramic structure

Abstract

A bonded ceramic structure is fabricated by inserting a plurality of ceramic tubular members respectively in holes formed in a perforated ceramic plate member and bonding the same to the perforated ceramic plate. A clearance is formed between the outer circumference of the tubular member or that of a ceramic sleeve fitted on the tubular member, and the surface of the hole, and the clearance is filled up with a bonding material forming a bonding layer to join the tubular members to the plate by a high strength at a high positional accuracy. A method of fabricating such a bonded ceramic structure spreads a fusible bonding material on at least one major surface of the plate member, inserts the tubular members in the holes of the plate member, and fuses the bonding material so that the fused bonding material flows into the clearance between the surface of each hole and the tubular member to form a bonding layer continuously extending over the surface of the plate and in the clearances.

Claims18

Dependent claims

A bonded ceramic structure having a high positional accuracy and a high bonding strength comprising:

a perforated ceramic plate member having a plurality of holes;
ceramic tubular members each having at least one end inserted in said holes each with a predetermined clearance between an outer circumference thereof and a surface of the corresponding hole, wherein each of the clearances is filled with an inorganic bonding material forming an inorganic bonding layer so that the ceramic tubular members are fixedly bonded to the plate member;
and
a second inorganic bonding layer consisting essentially of said inorganic bonding material provided on the surface of the side of said perforated ceramic plate member facing said ceramic tubular members, said second inorganic bonding layer being continuously connected to said inorganic bonding layer, and said second inorganic bonding layer having a thickness of 0.2-2.5 mm.

1 more element

A bonded ceramic structure having a high positional accuracy and a high bonding strength comprising:

a perforated ceramic plate member having a plurality of through holes;
ceramic tubular members arranged transversely in one side of said perforated ceramic plate member, one end of each ceramic tubular member being inserted into said through holes with predetermined clearances between an outer circumference thereof and a surface of said through holes;
an inorganic bonding material in said predetermined clearances fixedly bonding said ceramic tubular members to said perforated ceramic plate member;
and
an inorganic bonding layer consisting of said inorganic bonding material provided on the surface of said side of said perforated ceramic plate member, wherein said inorganic bonding material in said clearances is continuously connected to said inorganic bonding layer and said inorganic bonding layer has a thickness of 0.2-2.5 mm.

2 more elements

A bonded ceramic structure having a high positional accuracy and a high bonding strength comprising:

a perforated ceramic plate member having a plurality of through holes;
ceramic sleeve members fitted into said through holes with predetermined clearances between an outer circumference thereof and a surface of said holes;
ceramic tubular members arranged transversely in one side of said perforated ceramic plate member, one end of each ceramic tubular member being inserted into said ceramic sleeve members;
an inorganic bonding material in said predetermined clearances fixedly bonding said ceramic tubular members to said perforated ceramic plate member;
and
an inorganic bonding layer consisting essentially of said inorganic bonding material provided on the surface of said side of said perforated ceramic plate member, wherein said inorganic bonding material in said clearances is continuously connected to said inorganic bonding layer and said inorganic bonding layer has a thickness of 0.2-2.5 mm.

3 more elements

Dependencies are inferred from the claim text.

Bonded ceramic structure

Life of this patent

Bonded ceramic structure

Life of this patent

Abstract

Claims18