Mathematical modeling for the preparation of C/SiC composites from methyl-trichlorosilane in a F-CVI(Forced-chemical vapor infiltration)reactor was studied. Changes of pressure, concentration and porosity with time were predicted by the modeling. Pressure in the preform decreased sharply along the direction of gas flow. Pore entrances were plugged at 130min reaction time in the conditions of thes research. As pore entrances became plugged, the pressure at the pore entrance increased rapidly the time when the preform should be overturned in the middle of deposition process for a uniform deposition could be decided by observing the radius of pore entrance. At the gas outlet of the preform, MTS was depleted completely and the fraction of HCI, i.e., the undesirable byproduct, became 0.42.
Chung GY, Cagliostro DE, McCoy BJ, Smith JM, NASA T.M., 10397, 1992
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
Delhaes P, Carbon, 40(5), 641, 2002
Jenkin WC, U.S. Patent, 3,160,517, 1964
Jensen KF, Melkote RR, "Chemical Vapor Infiltration of Short Fiber Preforms," Extended Abstract presented at the 1989 AIChE Meeting, San Francisco, 54(1989), 1989
Jiang K, Li H, Wang M, Mater. Lett., 54, 419, 2002
Jin S, Wang X, Starr TL, J. Mater. Res., 14, 3829, 1999
Jin S, Wang X, Starr TL, Chen X, J. Computational Physics, 162(2), 467, 2000
Gupte SM, Tsamopoulos JA, J. Electrochem. Soc., 136, 555, 1989
Li HJ, Jiang KY, Li KZ, Mater. Lett., 57, 2366, 2003
Luo R, Carbon, 40(11), 1957, 2002
Nannetti CA, Riccardi B, Ortona A, La Barbera A, Scafe E, Vekinis G, Nuclear Materials, 307, 1196, 2002
Park JY, Kim WJ, Hwang HS, "Studies on the densification of Cf/SiC composites using MTS," The 1st year Technical Report, The Korea Nuclear Research Center, 2001