caa a22 4500 463225422 CHVBK 20180405153225.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10853-006-0688-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0688-1 Carbon fiber/ceramic matrix composites: processing, oxidation and mechanical properties [Elektronische Daten] [Samanta de Omena Pina, Luiz Pardini, Inez Yoshida] Ceramic matrix composites (CMC) have been considered in the last two decades to be alternative materials for highly demanding thermo-structural applications. Pre-ceramic polymers offer significant advantages for manufacturing these composites by the polymer impregnation method. In the present work, carbon fiber/silicon oxycarbide (C/SiC x O y ) composites were obtained by controlled pyrolysis of carbon fiber/bridge polysilsesquioxane composites (COMPOSITE 1) followed by infiltration/pyrolysis cycles with a polycyclic silicone network. The polysilsesquioxane showed high wettability and adhesion on the carbon fiber surface. An improvement of the thermo-oxidation resistance and a reduction of the porosity as a function of the number of polycyclic silicone infiltration cycles were observed. An extra improvement in the thermo-oxidation protection was found when the C/SiC x O y composite was coated with a poly(phenylsilsesquioxane) layer (COMPOSITE 2). Shear properties for the composites showed a dependence on the nature of the matrix. The average in-plane shear strength and the shear modulus were 44.2±1.9MPa and 2.2±0.5GPa for the polymeric matrix composite (COMPOSITE 1), respectively. For the ceramic matrix composite (COMPOSITE 2) the values were 14.2±4.1MPa and 15.0±2.0GPa, respectively. The properties of the latter composite were also governed by the microstructure of the ceramic matrix. Springer Science+Business Media, LLC, 2007 de Omena Pina Samanta Instituto de Química, Universidade Estadual de Campinas - UNICAMP, CP 6154, 13084-971, Campinas, SP, Brazil aut Pardini Luiz Centro Técnico Aeroespacial, Instituto de Aeronáutica e Espaço, AMR, 12228-904, São José dos Campos, SP, Brazil aut Yoshida Inez Instituto de Química, Universidade Estadual de Campinas - UNICAMP, CP 6154, 13084-971, Campinas, SP, Brazil aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/12(2007-06-01), 4245-4253 0022-2461 42:12<4245 2007 42 10853 https://doi.org/10.1007/s10853-006-0688-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0688-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- de Omena Pina Samanta Instituto de Química, Universidade Estadual de Campinas - UNICAMP, CP 6154, 13084-971, Campinas, SP, Brazil aut NATIONALLICENCE 700 1- Pardini Luiz Centro Técnico Aeroespacial, Instituto de Aeronáutica e Espaço, AMR, 12228-904, São José dos Campos, SP, Brazil aut NATIONALLICENCE 700 1- Yoshida Inez Instituto de Química, Universidade Estadual de Campinas - UNICAMP, CP 6154, 13084-971, Campinas, SP, Brazil aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/12(2007-06-01), 4245-4253 0022-2461 42:12<4245 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer