Title: Method of forming a ceramic to ceramic joint

Abstract

A method of joining at least two sintered bodies to form a composite structure, includes: providing a joint material between joining surfaces of first and second sintered bodies; applying pressure from 1 kP to less than 5 MPa to provide an assembly; heating the assembly to a conforming temperature sufficient to allow the joint material to conform to the joining surfaces; and further heating the assembly to a joining temperature below a minimum sintering temperature of the first and second sintered bodies. The joint material includes organic component(s) and ceramic particles. The ceramic particles constitute 40-75 vol. % of the joint material, and include at least one element of the first and/or second sintered bodies. Composite structures produced by the method are also disclosed.

Inventors:

Cutler, Raymond Ashton; Hutchings, Kent Neal; Kleinlein, Brian Paul; Carolan, Michael Francis

Issue Date:

Tue Apr 13 00:00:00 EDT 2010

Research Org.:

Air Products and Chemicals, Inc., Allentown, PA (United States); Ceramatec, Inc., West Valley City, UT (United States

Sponsoring Org.:

USDOE

OSTI Identifier:

1176228

Patent Number(s):

7695580

Application Number:

11/332,995

Assignee:

Air Products and Chemicals, Inc. (Allentown, PA); Ceramatec, Inc. (Salt Lake City, UT)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

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B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

B32B2315/02 - Ceramics

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B2235/3208 - Calcium oxide or oxide-forming salts thereof, e.g. lime
C04B2235/3227 - Lanthanum oxide or oxide-forming salts thereof
C04B2235/3275 - Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
C04B2235/5409 - expressed by specific surface values
C04B2235/6025 - Tape casting, e.g. with a doctor blade
C04B2235/6562 - Heating rate
C04B2235/6565 - Cooling rate
C04B2235/79 - Non-stoichiometric products, e.g. perovskites
C04B2235/94 - Products characterised by their shape
C04B2237/04 - Ceramic interlayers
C04B2237/06 - Oxidic interlayers
C04B2237/064 - based on alumina or aluminates
C04B2237/068 - based on refractory oxides, e.g. zirconia
C04B2237/34 - Oxidic
C04B2237/343 - Alumina or aluminates
C04B2237/348 - Zirconia, hafnia, zirconates or hafnates
C04B35/01 - based on oxide ceramics
C04B35/2641 - {Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead}
C04B35/6261 - {Milling}
C04B35/6264 - {Mixing media, e.g. organic solvents}
C04B35/6342 - {Polyvinylacetals, e.g. polyvinylbutyral [PVB]}
C04B37/005 - {consisting of glass or ceramic material}
C04B37/008 - {by means of an interlayer consisting of an organic adhesive, e.g. phenol resin or pitch}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/50 - Fuel cells

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DOE Contract Number:  

FC26-98FT40343

Resource Type:

Patent

Resource Relation:

Patent File Date: 2006 Jan 17

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE