Online-Joining of C/SiC-C/SiC via Precursor Infiltration and Pyrolysis Process

Abstract:

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A novel, online-joining of C/SiC-C/SiC method, precursor infiltration and pyrolysis, was used to obtain high temperature stable joining SiC composition, while joining process was highly consistent with C/SiC preparation process. The compositions of joining ingredients and process parameters were investigated to determine the maximum joining strength of C/SiC-C/SiC at room and high temperatures. The optimum weight ratio of (polycarbosilane/divinyl benzene)/SiC powder is 3/1, and ramping rate of pyrolysis is 2°C/min, and cycles of infiltration and pyrolysis is 6. The flexural strengths of joining components remained stable up to 1200°C (50.8MPa), but decreased to 30.5MPa at 1500°C, while the tensile strengths remained rather stable (20.5MPa) up to 1500°C, and decreased to 8.4MPa at 1800°C.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1044-1046

DOI:

10.4028/www.scientific.net/KEM.368-372.1044

Citation:

Y. W. Lu et al., "Online-Joining of C/SiC-C/SiC via Precursor Infiltration and Pyrolysis Process", Key Engineering Materials, Vols. 368-372, pp. 1044-1046, 2008

Online since:

February 2008

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Price:

$35.00

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