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Title: Diffusion barriers in modified air brazes

Abstract

A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.

Inventors:
 [1];  [1];  [1];  [1]
  1. Richland, WA
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
985336
Patent Number(s):
7691488
Application Number:
11/811,633
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Weil, Kenneth Scott, Hardy, John S, Kim, Jin Yong, and Choi, Jung-Pyung. Diffusion barriers in modified air brazes. United States: N. p., 2010. Web.
Weil, Kenneth Scott, Hardy, John S, Kim, Jin Yong, & Choi, Jung-Pyung. Diffusion barriers in modified air brazes. United States.
Weil, Kenneth Scott, Hardy, John S, Kim, Jin Yong, and Choi, Jung-Pyung. Tue . "Diffusion barriers in modified air brazes". United States. https://www.osti.gov/servlets/purl/985336.
@article{osti_985336,
title = {Diffusion barriers in modified air brazes},
author = {Weil, Kenneth Scott and Hardy, John S and Kim, Jin Yong and Choi, Jung-Pyung},
abstractNote = {A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {4}
}

Works referenced in this record:

Effects of atmospheres on bonding characteristics of silver and alumina
journal, July 2008


The effect of TiO2 on the wetting behavior of silver–copper oxide braze filler metals
journal, March 2006


Ag–Al based air braze for high temperature electrochemical devices
journal, November 2007


Dual-atmosphere tolerance of Ag–CuO-based air braze
journal, November 2007