Paper derived biomorphic porous titanium carbide and titanium oxide ceramics produced by chemical vapor infiltration and reaction (CVI-R)

Nadja Popovska, Daniela Almeida Streitwieser, Chen Xu, Helmut Gerhard

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

48 Citas (Scopus)

Resumen

Chemical vapor infiltration (CVI) is used for producing biomorphic porous TiC ceramics derived from paper. The paper samples are first carbonized in inert atmosphere to yield biocarbon template structures (Cb-template). Subsequently, three routes for converting the Cb-templates into TiC ceramics are studied. The first route includes CVI with TiCl4-H2. The effect of methane as additional carbon source is investigated on the second route (TiCl4-H2-CH4). Finally, a two step CVI process (Route 3), first TiCl4-H2 and subsequent TiCl4-H2-CH4, is performed in order to improve both the grade of conversion of the Cb-template into TiC and the mechanical properties of the resulting porous TiC ceramics. Furthermore, porous TiO2 ceramics are produced by high temperature oxidation of the TiC ceramics in air flow.

Idioma originalInglés
Páginas (desde-hasta)829-836
Número de páginas8
PublicaciónJournal of the European Ceramic Society
Volumen25
N.º6
DOI
EstadoPublicada - mar. 2005
Publicado de forma externa

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