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Title: Task 6.3 -- Engineering performance of advanced structural materials. Semi-annual report, January 1--June 30, 1995

Abstract

SiC sublimes without melting at temperatures over 2,000 C. This makes SiC difficult to use in the fabrication of large structures, because pieces made from SiC cannot be joined together in the same way that metals can be welded. Therefore, the size of the monolithic ceramic structures that can be manufactured are limited by the size of the sintering furnaces (approximately 10 feet for sintered alpha silicon carbide). In order to make larger objects such as heat exchangers, many small ceramic pieces must be fused or joined. In addition, repair of the objects will require the use of field joining techniques. At present, no joining techniques for high-temperature structural ceramics are routinely available. The objective of this work at the Energy and Environmental Research Center (EERC) is to develop a patentable technique for joining large silicon based advanced ceramics in the field. The key to developing a successful technique will be the use of reactive joining compounds to lower the joining temperature but without leaving continuous channels of unreacted compounds that can weaken the joint or be conduits for corrosion at temperatures over 1,400 C. Special efforts will be made in this project to transfer the developed technologies to themore » materials industry via licensing agreements through the EERC Foundation.« less

Authors:
; ; ;
Publication Date:
Research Org.:
North Dakota Univ., Energy and Environmental Research Center, Grand Forks, ND (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
OSTI Identifier:
634161
Report Number(s):
DOE/MC/30097-5608
ON: DE97002255; TRN: AHC2DT01%%172
DOE Contract Number:  
FC21-93MC30097
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Aug 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PROGRESS REPORT; SILICON CARBIDES; MECHANICAL STRUCTURES; SIZE; JOINING; SILICON NITRIDES; ADHESIVES; MATERIALS TESTING

Citation Formats

Hurley, J P, Kay, J, Nowok, J W, and Schuster, M. Task 6.3 -- Engineering performance of advanced structural materials. Semi-annual report, January 1--June 30, 1995. United States: N. p., 1997. Web. doi:10.2172/634161.
Hurley, J P, Kay, J, Nowok, J W, & Schuster, M. Task 6.3 -- Engineering performance of advanced structural materials. Semi-annual report, January 1--June 30, 1995. United States. https://doi.org/10.2172/634161
Hurley, J P, Kay, J, Nowok, J W, and Schuster, M. 1997. "Task 6.3 -- Engineering performance of advanced structural materials. Semi-annual report, January 1--June 30, 1995". United States. https://doi.org/10.2172/634161. https://www.osti.gov/servlets/purl/634161.
@article{osti_634161,
title = {Task 6.3 -- Engineering performance of advanced structural materials. Semi-annual report, January 1--June 30, 1995},
author = {Hurley, J P and Kay, J and Nowok, J W and Schuster, M},
abstractNote = {SiC sublimes without melting at temperatures over 2,000 C. This makes SiC difficult to use in the fabrication of large structures, because pieces made from SiC cannot be joined together in the same way that metals can be welded. Therefore, the size of the monolithic ceramic structures that can be manufactured are limited by the size of the sintering furnaces (approximately 10 feet for sintered alpha silicon carbide). In order to make larger objects such as heat exchangers, many small ceramic pieces must be fused or joined. In addition, repair of the objects will require the use of field joining techniques. At present, no joining techniques for high-temperature structural ceramics are routinely available. The objective of this work at the Energy and Environmental Research Center (EERC) is to develop a patentable technique for joining large silicon based advanced ceramics in the field. The key to developing a successful technique will be the use of reactive joining compounds to lower the joining temperature but without leaving continuous channels of unreacted compounds that can weaken the joint or be conduits for corrosion at temperatures over 1,400 C. Special efforts will be made in this project to transfer the developed technologies to the materials industry via licensing agreements through the EERC Foundation.},
doi = {10.2172/634161},
url = {https://www.osti.gov/biblio/634161}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 1997},
month = {Fri Aug 01 00:00:00 EDT 1997}
}