Corrosion characteristics of silicon carbide fiber-reinforced composites in beryllium-bearing molten fluoride salt

被引：0
|
作者：
Lamm, Benjamin W. [1 ]
Koyanagi, Takaaki [1 ]
Lee, Jo Jo [1 ]
Keiser, James R. [1 ]
Gietl, Hanns [1 ]
Katoh, Yutai [1 ]
机构：
[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN USA
来源：
CORROSION SCIENCE | 2025年 / 244卷
关键词：
SiC/SiC; CMC; Corrosion; Molten Salt; MECHANICAL-PROPERTIES; SICF/SIC COMPOSITES; RAMAN-SPECTROSCOPY; TEMPERATURE; MICROSTRUCTURE; COMPATIBILITY; SCATTERING; STRENGTH; ORDER;
D O I：
10.1016/j.corsci.2024.112635
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Corrosion of SiC-fiber reinforced SiC matrix composites in 2LiF-BeF2 molten salt was examined following static molten salt exposure for 1000 h at 650 and 750 degrees C. Composites were fabricated with either Tyranno SA3 or HiNicalon type-S fibers and a chemical vapor infiltration SiC matrix. Both composites showed minimal weight loss after salt exposure and maintained shape. Corrosion was characterized by comprehensive electron microscopy and Raman spectroscopy. Based on the results of experimental and thermodynamic analysis, a corrosion mechanism for SiC/SiC is proposed where both the salt and SiC materials play a key role in the phase stability of the composite.
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页数：15
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