MANUFACTURING OF CERAMIC COMPO- SITES REINFORCED WITH LAYERED WOVEN FABRICS BY CVI OF SiC FROM DI- CHLORODIMETHYLSILANE

Cho MS; Kim JW; Chung GY

Korean Journal of Chemical Engineering, Vol.13, No.5, 515-521, September, 1996

Manufacturing of ceramic/ceramic composites by chemical vapor infiltration of SiC from di- chlorodimethylsilane (DDS) in 2- and 4-ply woven carbon fabrics has been studied. Dense deposition was obtained at a low reaction pressure such as 10 torr, as expected. However, little deposition was occurred at low DDS concentration such as 4%. Spaces between plies were left void with little deposition. The amount of deposition was proportional to the pressure and the DDS concentration. From the experimental data of the amount of deposition, the first order deposition rate constant of 40 cm/min was estimated. This value was bigger than our previous value. The tendencies for 4-ply sample were similar to those of 2-ply sample. Scanning electron microphotographs and pore size distribution analysis showed the same results.

Keywords:Layered Woven Fabrics;Chemical Vapor Infiltration;Deposition Rate;Dichlorodimethylsilane;SiC

[References]

Besmann TM, Sheldon BW, Lowden RA, Stinton DP, Science, 253, 1104 (1991)
Bickerdike RJ, Brown ARG, Hughes G, Ranson H, Proceedings of the Fifth Conference on Carbon, Pergamon, New York, Vol. 1 (1962)
Chung GY, McCoy BJ, Smith JM, Chem. Eng. Sci., 46(3), 723 (1991)
Chung GY, McCoy BJ, Smith JM, Cagliostro DE, J. Am. Ceram. Soc., 74(12), 4473 (1991)
Chung GY, McCoy BJ, Smith JM, Cagliostro DE, Chem. Eng. Sci., 47(2), 311 (1992)
Chung GY, McCoy BJ, Smith JM, Cagliostro DE, AIChE J., 39(11), 1834 (1993)
Lee G, Mccoy BJ, Smith JM, Cagliostro DE, AIChE J., 41(4), 1037 (1995)
Gupte SM, Tsamopoulos JA, J. Electrochem. Soc., 136(2), 555 (1989)
Jensen KF, Melkote RR, "Chemical Vapor Infiltration of Short Fiber Preforms," Extended Abstracted AIChE Annual Meeting, San Francisco, p. 54 (1989)
Jenkin WC, U.S. Patent, 3,160,517 (8 December) (1964)
Kim JW, Yoo JH, Cho MS, Ju JB, Chung GY, HWAHAK KONGHAK, 34(4), 443 (1996)
Rossignol JY, Langlais F, Naslain R, Proc. Electrochem. Soc., 84(6), 596 (1984)
Starr T, Ceram. Eng. Soc. Proc., 8(7), 951 (1987)
Tai NH, Chou TW, J. Am. Ceram. Soc., 72(3), 414 (1989)

[Referenced By]

[1] Besmann TM, Sheldon BW, Lowden RA, Stinton DP, Science, 253, 1104 (1991)

[2] Bickerdike RJ, Brown ARG, Hughes G, Ranson H, Proceedings of the Fifth Conference on Carbon, Pergamon, New York, Vol. 1 (1962)

[3] Chung GY, McCoy BJ, Smith JM, Chem. Eng. Sci., 46(3), 723 (1991)

[4] Chung GY, McCoy BJ, Smith JM, Cagliostro DE, J. Am. Ceram. Soc., 74(12), 4473 (1991)

[5] Chung GY, McCoy BJ, Smith JM, Cagliostro DE, Chem. Eng. Sci., 47(2), 311 (1992)

[6] Chung GY, McCoy BJ, Smith JM, Cagliostro DE, AIChE J., 39(11), 1834 (1993)

[7] Lee G, Mccoy BJ, Smith JM, Cagliostro DE, AIChE J., 41(4), 1037 (1995)

[8] Gupte SM, Tsamopoulos JA, J. Electrochem. Soc., 136(2), 555 (1989)

[9] Jensen KF, Melkote RR, "Chemical Vapor Infiltration of Short Fiber Preforms," Extended Abstracted AIChE Annual Meeting, San Francisco, p. 54 (1989)

[10] Jenkin WC, U.S. Patent, 3,160,517 (8 December) (1964)

[11] Kim JW, Yoo JH, Cho MS, Ju JB, Chung GY, HWAHAK KONGHAK, 34(4), 443 (1996)

[12] Rossignol JY, Langlais F, Naslain R, Proc. Electrochem. Soc., 84(6), 596 (1984)

[13] Starr T, Ceram. Eng. Soc. Proc., 8(7), 951 (1987)

[14] Tai NH, Chou TW, J. Am. Ceram. Soc., 72(3), 414 (1989)