Browse Prior Art Database

Oxidation resistant filler metals for direct brazing of structural ceramics (USH0000301)

IP.com Disclosure Number: IPCOM000000300D
Original Publication Date: 1987-Jul-07
Included in the Prior Art Database: 2008-Mar-31
Document File: 4 page(s) / 571K

Publishing Venue

US Statutory Invention Registration (SIRs)

Related People

The United States of America as represented by the Department of Energy: OWNER [+4]

Related Documents

USH000301: PATENT [+6]

Abstract

A method of joining ceramics and metals to themselves and to one another is escribed using essentially pure trinickel aluminide and trinickel aluminide containing small amounts of carbon. This method produces strong joints that can withstand high service temperatures and oxidizing environments.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 21% of the total text.

United States Patent

USH0000301

Moorhead

July 7, 1987


Oxidation resistant filler metals for direct brazing of structural ceramics

Abstract

A method of joining ceramics and metals to themselves and to one another is escribed using essentially pure trinickel aluminide and trinickel aluminide containing small amounts of carbon. This method produces strong joints that can withstand high service temperatures and oxidizing environments.


Inventors:

Moorhead; Arthur J. (Knoxville, TN)

Assignee:

The United States of America as represented by the Department of Energy (Washington, DC)

Appl. No.:

06/838,489

Filed:

March 11, 1986


Related U.S. Patent Documents


 

 

 

 

 

 

 

Application Number

Filing Date

Patent Number

Issue Date

 

 

751414

Jul., 1985

4596354

 

 

 

 

 

 

 

 


Current U.S. Class:

428/627 ; 228/121; 428/469; 428/472.2; 428/632; 428/680

Current International Class:

B23K 35/30 (20060101); C04B 37/00 (20060101); C04B 37/02 (20060101); B32B 015/04 (); B22F 003/26 (); C03C 027/02 ()

Field of Search:

228/121,122,263.11,263.12,263.13,263.19,263.21 428/680,678,469,446,702


References Cited


U.S. Patent Documents

 

 

 

2515184

January 1941

Bieber et al.

2910356

October 1959

Grala et al.

3620718

November 1971

Freche et al.

4046560

September 1977

Freche et al.

4553472

November 1985

Munro et al.

 

 

 

Primary Examiner: Kyle; Deborah L.
Assistant Examiner: Carone; Michael
Attorney, Agent or Firm:

Lovingood; Katherine Hamel; Stephen D. Hightower; Judson R.


Parent Case Text



This is a division of application Ser. No. 751,414 filed July 3, 1985, now U.S. Pat. No. 4,596,354.


Claims



I claim:
1. A composite body comprising at least two structural components of ceramics and metals joined to themselves or to one another with a trinickel aluminide brazing filler metal disposed thereinbetween consisting essentially of 23 to 25 atomic percent aluminum and the balance nickel.
2. The composite body of claim 1 wherein said brazing filler metal consists essentially of 23 to 25 atomic percent aluminum, 0.05 to 0.20 atomic percent carbon and the balance nickel.


Description



BACKGROUND OF THE INVENTION
This invention relates to the development of oxidation resistant brazing filler metals for direct brazing of ceramics to ceramics or ceramics to metals to form strong joints that can withstand high service temperatures. It was developed under a contract with the United States Department of Energy.
A key technology that will enhance or restrict the use of ceramic materials in high performance applications, such as advanced heat engines or heat exchangers, is the ability to reliably join simple-shape ceramic components to form complex assemblies or to join unit lengths of ceramic material to form large ceramic systems. Although ceramic joining technology has been highly developed over the past fifty years, very little has been done to develop brazing filler metals for joining ceramics for use at elevated temperatures, at high stress levels and in dirty environments.
Brazing of c...