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Title: Low-Activation Joining of SiC/SiC Composites for Fusion Applications

Abstract

Abstract Research at PNNL has been directed at high-strength, low-activation joints using solid-state displacement reactions. This paper reports on further development and optimization of displacement reaction joints for the TITAN collaboration. The results reveal that fully dense and high-quality joints between SiC-composite bars are fabricated at 1623K to 1723K using 30 MPa pressure in purified argon atmospheres. Scanning electron micrographs reveal typical interpenetrating phase microstructures in the joints, which are about 10 µm thick. Blocky SiC particles are observed to nucleate preferentially at the SiC-joint interface but are more plate-like within the joint. X-ray spectroscopy reveals a uniform distribution of constituent elements consistent with the interpenetrating phases.

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1178526
Report Number(s):
PNNL-SA-85135
AT2030110
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Nuclear Materials, 51(1-3):375-378
Additional Journal Information:
Journal Name: Journal of Nuclear Materials, 51(1-3):375-378
Country of Publication:
United States
Language:
English

Citation Formats

Henager, Charles H., and Kurtz, Richard J. Low-Activation Joining of SiC/SiC Composites for Fusion Applications. United States: N. p., 2011. Web. doi:10.1016/j.jnucmat.2010.12.084.
Henager, Charles H., & Kurtz, Richard J. Low-Activation Joining of SiC/SiC Composites for Fusion Applications. United States. doi:10.1016/j.jnucmat.2010.12.084.
Henager, Charles H., and Kurtz, Richard J. Sat . "Low-Activation Joining of SiC/SiC Composites for Fusion Applications". United States. doi:10.1016/j.jnucmat.2010.12.084.
@article{osti_1178526,
title = {Low-Activation Joining of SiC/SiC Composites for Fusion Applications},
author = {Henager, Charles H. and Kurtz, Richard J.},
abstractNote = {Abstract Research at PNNL has been directed at high-strength, low-activation joints using solid-state displacement reactions. This paper reports on further development and optimization of displacement reaction joints for the TITAN collaboration. The results reveal that fully dense and high-quality joints between SiC-composite bars are fabricated at 1623K to 1723K using 30 MPa pressure in purified argon atmospheres. Scanning electron micrographs reveal typical interpenetrating phase microstructures in the joints, which are about 10 µm thick. Blocky SiC particles are observed to nucleate preferentially at the SiC-joint interface but are more plate-like within the joint. X-ray spectroscopy reveals a uniform distribution of constituent elements consistent with the interpenetrating phases.},
doi = {10.1016/j.jnucmat.2010.12.084},
journal = {Journal of Nuclear Materials, 51(1-3):375-378},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {10}
}