J. P. Viricelle et al/ Composites Science and Technology 61(2001)607-614 (900-1200C). Water vapour plays n important role Filipuzzi L, Camus G, Naslain R. Oxidation mechanisms and because of the formation of volatile species with boron kinetics of 1D-SiC/C/SiC composite materials: I. an experimenta oxide which modify the properties of the oxide scale. Ir approach. J Am Ceram Soc 1994: 77(2): 459-66 dry atmosphere, the phenomena are quantitatively 5 Filipuzzi L, Naslain R. Oxidation mechanisms and kinetics of minimised but are close to the ones observed in wet D-Sic/C/SiC composite materials: Il. modeling. J Am Ceram Soc1994;77(2):467-80 atmosphere, except at 900 C where a good protection of [6] Huger M. Fargeot D, Gault C. Ultrasonic characterization of the interphase occurs as at 800C oxidation mechanisms in Nicalon/C/SiC composi This study shows that this new 2.5D multilayered Ceram Soc1994;77(10:255460 CMC, (SiC)/C/(SiBC)m, exhibits a better oxidation [7 Kleykamp H, Schauer V, Skokan A Oxidation behaviour of Sic fibre reinforced SiC. J Nuc Mater 1995: 227: 130-7 resistance compared to the previous generation of [8B. Dambrine, G. Gauthier, Role de oxydation sur le comporte- (SiC)e/C/(SiC)m composites. In particular, the self-heal ment en fatigue d'un composite SiC/SiC. In: Chermant JL, Fan ing behaviour observed at low temperatures in the range Zzi G, editors. Revue des Composites et Materiaux Avances, 650-10000C is due to the presence of boron compounds vol 3. Hermes. 1993. However, 600C remains a critical temperature in the [9 Naslain R, Dugne O, Guette A. Boron nitride interphase in conditions of the present study as the oxidation of (10) Prouhet S, Camus G, Labrugere C, Guette A. Mechanical char. boron carbide in negligible at this temperature acterization of Si-C(O)fiber/SiC(CVI) matrix composites with a BN-interphase. J Am Ceram Soc 1994: 77(3): 649-56 [1] Sheldon Bw, Sun Y. Oxidation of BN-coated SiC fibers in [12 Kobayashi K, Mac The authors wish knowledge the Et omposed of B4C-SiC powders Carbon 1995:33(43: 397-403 formed during the Brite-Euram project BE-5462 and the [3] Riu DH, Choi r Kim HE Kang ES Oxidation behaviour and SEP society for the supplying of the material. We also wish to thank the other partners (CEIT, LGAI [14 Carrere, P. PhD thesis. University of Bordeaux, 1996 ONERA. ROLLS-ROYCE, SNECMA)for valuable 5] Viricelle, JP, Goursat, P, Bahloul-Hourlier, D. Oxidation beha- discussions ur of a boron carbide based material in dry and wet atmo- phere. J of Chem Soc Farad Trans(submitted) [16 Shaffer PT. Solubility of boron in alpha silicon carbide. Mater Res bull i9705(7):51921 References [17 Tajima Y, Kingery WD Solid solubility of aluminium and boron in silicon carbide. Am Ceram Soc Com 1982: 65(2): C27-29 [1 Naslain R. Ceramic matrix composites. Phil Trans R Soc Londa [18Viricelle JP, Bahloul-Hourlier D, Goursat P. Oxidation beha- 5:351:485-96 based fiber. In: Fuentes M, et al., editors. Key [2 Frety N, Boussuge M. Relationship between high-temperature Engineering Materials, Ceramic and Metal Matrix Composites development of fibre-matrix interfaces and the mechanical beha- voL. 127-131. Trans. Tech. Publications, 1997. p. 203-10 our of SiC-SiC composites. Comp Sci Tech 1990: 37: 77-89. [19 Viricelle JP, Goursat P, Bahloul-Hourlier D. Brite-Euram 3 Keraus RJ. Hay rs, Pagano NJ, Parthasarathy TA. The role of BE-_462, University of Limoges, annual progress report, Is the fiber-matrix interface in ceramic composites. Am Ceram Soc [20] Viricelle JP, Goursat P, Bahloul-Hourlier D. Brite-Euram BE-5462, University of Limoges, final report, 1997.),,4(',,
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