Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CERAMIC MATRIX COMPOSITES HAVING MONOMODAL PORE SIZE DISTRIBUTION AND LOW FIBER VOLUME FRACTION
Ceramic matrix composite articles (10) include, for example, a plurality of unidirectional arrays of fiber tows (20) in a matrix having a monomodal pore size distribution, and a fiber volume fraction between 15 percent and 35 percent. The articles may be formed by a method (100), for example, by providing (110) a shaped preform comprising a prepreg tape layup of unidirectional arrays of fiber tows (20), a matrix precursor, and a pore former, curing (120) the shaped preform to pyrolyze the matrix precursor and burnout the pore former so that the shaped preform comprises the unidirectional arrays of fiber tows (20) and a porous matrix having a monomodal pore size distribution, and subjecting (130) the cured shaped preform to chemical vapor infiltration to densify the porous matrix so that the ceramic matrix composite article (10) has a fiber volume fraction between 15 percent and 35 percent.
CERAMIC MATRIX COMPOSITES HAVING MONOMODAL PORE SIZE DISTRIBUTION AND LOW FIBER VOLUME FRACTION
Ceramic matrix composite articles (10) include, for example, a plurality of unidirectional arrays of fiber tows (20) in a matrix having a monomodal pore size distribution, and a fiber volume fraction between 15 percent and 35 percent. The articles may be formed by a method (100), for example, by providing (110) a shaped preform comprising a prepreg tape layup of unidirectional arrays of fiber tows (20), a matrix precursor, and a pore former, curing (120) the shaped preform to pyrolyze the matrix precursor and burnout the pore former so that the shaped preform comprises the unidirectional arrays of fiber tows (20) and a porous matrix having a monomodal pore size distribution, and subjecting (130) the cured shaped preform to chemical vapor infiltration to densify the porous matrix so that the ceramic matrix composite article (10) has a fiber volume fraction between 15 percent and 35 percent.
CERAMIC MATRIX COMPOSITES HAVING MONOMODAL PORE SIZE DISTRIBUTION AND LOW FIBER VOLUME FRACTION
KERAMIKMATRIXVERBUNDSTOFFE MIT MONOMODALER PORENGRÖSSENVERTEILUNG UND GERINGER FASERVOLUMENFRAKTION
COMPOSITES À MATRICE CÉRAMIQUE AYANT UNE DISTRIBUTION DE TAILLE DE PORES MONOMODALE ET UNE FAIBLE FRACTION DE VOLUME DE FIBRES
CORMAN GREGORY SCOT (Autor:in) / WEAVER JARED HOGG (Autor:in) / LUTHRA KRISHAN LAL (Autor:in)
27.09.2017
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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