L. Cheng et al./ Materials Science and Engineering 4300(2001)219-225 u-9a 三xem Ie-xe一 ± 心5=eU59=88 -=9D ex导 xel 6。g 品5三826日=5 lexe-1的L . Cheng et al . / Materials Science and Engineering A300 (2001) 219 –225 221 Table 1 Constants in a model relation of weight change with temperature for oxidation of the coated C/C, AP-CVI C/SiC (U-C/SiC) and LP-CVI C/SiC (L-C/SiC) F CS S% C/C U-C/ SiC L-C/ SiC C/C U-C/ SiC L-C/ SiC C/C U-C/ SiC L-C/ SiC C/C U-C/ SiC L-C/ SiC 8.8 A −10.3 110.6 1.4 −4.7 4.4 3.2 −30.2 −9.8 −10.3 26.2 −2.0×10−9 −1.7×10−17 −4.0×10−14 −1.0×10−25 −3.0×10−23 −2.0×10−10 −6.0×10−28 −1.0×10−9 B −1.0×10−10 −3.0×10−10 −1.0×10−10 n 10.8 11.8 13.0 14.2 20.5 21.3 23.2 14.4 12.8 9.9 10.4