โ Scribed by Katsuki Kusakabe; Bong-Kuk Sea; Jun-Ichiro Hayashi; Hideaki Maeda; Shigeharu Morooka
No coin nor oath required. For personal study only.
Carbon fibers 6.5 pm in diameter were coated with amorphous Sic films by chemical vapor deposition at temperatures as low as 80&9Oo"C, using triisopropylsilane in hydrogen. The morphology of the films was strongly affected by the reaction conditions. The tensile strength of the coated fibers was decreased by the coating, but was little affected by the coating method if smooth and tight films were formed. SIC films formed under optimized conditions effectively protected the fibers from oxidation.
When the fibers were enclosed with aluminum at lOoo"C, SIC films effectively retarded the diffusion of aluminum.
๐ SIMILAR VOLUMES
A mathematical model is presented for the description of the chemical vapor deposition of Sic on continuous fibers bundles consisting of several hundreds or even several thousands of individual filaments. Based on chemical engineering kinetics, the model predicts the mean layer thickness and the lay