SiC_f/SiC 복합체의 특성에 미치는 열간가압소결 조건의 영향

Title
SiC_f/SiC 복합체의 특성에 미치는 열간가압소결 조건의 영향
Other Titles
Effects of Hot Pressing Condition on the Properties of SiC_f/SiC Composites
Author(s)
노비얀토 알피안[노비얀토 알피안]윤당혁
Keywords
SiC_f/SiC composite; Electrophoretic deposition; Hot press; Zeta potential; Mechanical properties
Issue Date
201109
Publisher
한국세라믹학회
Citation
한국세라믹학회지, v.48, no.5, pp.335 - 341
Abstract
Continuous SiC fiber-reinforced SiC-matrix composites (SiC_f/SiC) had been fabricated by electrophoretic infiltration combined with ultrasonication. Nano-sized β-SiC added with 12 wt% of Al_2O_3-Y_2O_3 additive and Tyranno^(TM)-SA3 fabric were used as a matrix phase and fiber reinforcement, respectively. After hot pressing at 5 different conditions, the density, microstructure and mechanical properties of SiC_f/SiC were characterized. Hot pressing at relatively severe conditions, such as 1750℃ for 1 and 2 h, resulted in a brittle fracture behavior due to the strong fiber-matrix interface in spite of their high flexural strength. On the other hand, toughened SiC_f/SiC composite could be achieved by hot pressing at milder condition because of the formation of weak interface in spite of the decreased flexural strength. These results proposed the importance of weak fiber-matrix interface in the fabrication of ductile SiC_f/SiC composite.
URI
http://hdl.handle.net/YU.REPOSITORY/24487
ISSN
1229-7801
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공과대학 > 신소재공학부 > Articles
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