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Title: Low temperature joining of ceramic composites

Abstract

A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.

Inventors:
 [1];  [1];  [1];  [1];  [1]
  1. Ames, IA
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
OSTI Identifier:
872385
Patent Number(s):
US 5922628
Application Number:
09/028591
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
temperature; joining; ceramic; composites; method; similar; dissimilar; composite; materials; sic; continuous; fiber; relatively; temperatures; solventless; component; bonding; agent; effective; promote; mechanical; bond; toughness; elevated; strength; operating; approximately; 1200; degrees; comprises; preceramic; precursor; aluminum; bearing; powder; alloy; mixtures; metal; powders; boron; selected; proportions; disposed; interlayer; joined; heated; ambient; air; inert; atmosphere; exceeding; form; strong; tough; joint; produced; characterized; microstructure; soft; compliant; particulate; regions; dispersed; matrix; aluminum bearing; alloy powders; agent effective; dissimilar ceramic; temperature strength; bonding agent; ceramic matrix; alloy powder; composite materials; ceramic composites; ambient air; ceramic composite; elevated temperature; composite material; operating temperature; inert atmosphere; aluminum alloy; operating temperatures; ceramic precursor; agent comprises; bond joint; boron powder; aluminum metal; promote mechanical; relatively soft; regions dispersed; sic continuous; tough bond; bond toughness; bearing powder; bearing particulate; preceramic precursor; particulate regions; composite joint; component bonding; compliant aluminum; selected proportions; mechanical bond; temperature joining; continuous fiber; composite mat; fiber ceramic; joint produced; joint microstructure; joining temperatures; joining similar; omposite materials; /501/156/528/

Citation Formats

Barton, Thomas J, Anderson, Iver E, Ijadi-Maghsoodi, Sina, Nosrati, Mohammad, and Unal, Ozer. Low temperature joining of ceramic composites. United States: N. p., 1999. Web.
Barton, Thomas J, Anderson, Iver E, Ijadi-Maghsoodi, Sina, Nosrati, Mohammad, & Unal, Ozer. Low temperature joining of ceramic composites. United States.
Barton, Thomas J, Anderson, Iver E, Ijadi-Maghsoodi, Sina, Nosrati, Mohammad, and Unal, Ozer. 1999. "Low temperature joining of ceramic composites". United States. https://www.osti.gov/servlets/purl/872385.
@article{osti_872385,
title = {Low temperature joining of ceramic composites},
author = {Barton, Thomas J and Anderson, Iver E and Ijadi-Maghsoodi, Sina and Nosrati, Mohammad and Unal, Ozer},
abstractNote = {A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.},
doi = {},
url = {https://www.osti.gov/biblio/872385}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {7}
}