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http://dx.doi.org/10.4191/kcers.2018.55.4.11

Mechanical Properties of Cf/SiC Composite Using a Combined Process of Chemical Vapor Infiltration and Precursor Infiltration Pyrolysis  

Kim, Kyung-Mi (Icheon Branch, Korea Institute of Ceramic Engineering and Technology)
Hahn, Yoonsoo (Icheon Branch, Korea Institute of Ceramic Engineering and Technology)
Lee, Sung-Min (Icheon Branch, Korea Institute of Ceramic Engineering and Technology)
Choi, Kyoon (Icheon Branch, Korea Institute of Ceramic Engineering and Technology)
Lee, Jong-Heun (Department of Materials Science and Engineering, Korea University)
Publication Information
Journal of the Korean Ceramic Society / v.55, no.4, 2018 , pp. 392-399 More about this Journal
Abstract
$C_f/SiC$ composites were prepared via a process combining chemical vapor infiltration (CVI) and precursor infiltration pyrolysis (PIP), wherein silicon carbide matrices were infiltrated into 2.5D carbon preforms. The obtained composites exhibited porosities of 20 vol % and achieved strengths of 244 MPa in air at room temperature and 423 MPa at $1300^{\circ}C$ under an Ar atmosphere. Carbon fiber pull-out was rarely observed in the fractured surfaces, although intermediate layers of pyrolytic carbon of 150 nm thickness were deposited between the fiber and matrix. Fatigue fracture was observed after 1380 cycles under 45 MPa stress at $1000^{\circ}C$. The fractured samples were analyzed by transmission electron microscopy to observe the distributed phases.
Keywords
Ceramic Matrix Composite (CMC); Chemical Vapor Infiltration (CVI); Precursor Infiltration Pyrolysis (PIP); Fatigue; Transmission Electron Microscopy (TEM);
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Times Cited By KSCI : 3  (Citation Analysis)
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