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Ceramic matrix composite
About: Ceramic matrix composite is a research topic. Over the lifetime, 7807 publications have been published within this topic receiving 117020 citations.
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TL;DR: SiC ceramic matrix composites reinforced by three-dimensional braided carbon fibers were prepared via polycarbosilane infiltration pyrolysis (PIP) and the ablation behavior of the composites was characterized by an oxyacetylene torch under different environments as mentioned in this paper.
36 citations
Patent•
13 Nov 1991TL;DR: In this article, a fiber-reinforced ceramic matrix composite article is made with improved physical integrity and control over fiber alignment by a process wherein prepreg comprising fibers and powdered matrix is treated to shorten the average length of the fibers, then configured without binder removal into a preform of selected shape and fiber orientation, and finally consolidated with heat and pressure into a dense ceramic matrix composites article.
Abstract: Fiber-reinforced ceramic matrix composite articles of complex shape are made with improved physical integrity and control over fiber alignment by a process wherein prepreg comprising fibers and powdered matrix is treated to shorten the average length of the fibers, then configured without binder removal into a preform of selected shape and fiber orientation, and finally consolidated with heat and pressure into a dense ceramic matrix composite article. Fiber breakage during the consolidation process is thereby avoided.
36 citations
Patent•
16 Aug 1995TL;DR: In this paper, an exhaust manifold for an engine made of all fiber reinforced ceramic matrix composite material is presented, consisting of a liner of a cast monolithic ceramic material containing pores, filling the pores with a pre-ceramic polymer resin, coating reinforcing fibers with an interface material, forming a mixture of a preceramic polymeric polymer resin and reinforcing fibers coated with the interface material and firing the exhaust component shaped structure at a temperature and a time sufficient to convert the polymeric resin to a ceramic thereby forming a reinforced ceramic composite.
Abstract: This invention discloses an exhaust manifold for an engine made of all fiber reinforced ceramic matrix composite material so as to be light weight and high temperature resistant. A method of making the exhaust manifold comprises the steps of forming a liner of a cast monolithic ceramic material containing pores, filling the pores of the cast monolithic ceramic material with a pre-ceramic polymer resin, coating reinforcing fibers with an interface material to prevent a pre-ceramic polymer resin from adhering strongly to the reinforcing fibers, forming a mixture of a pre-ceramic polymer resin and reinforcing fibers coated with the interface material, forming an exhaust manifold shaped structure from the mixture of the pre-ceramic polymer resin and the reinforcing fibers coated with the interface material by placing the mixture on at least a portion of the cast monolithic ceramic material, and firing the exhaust component shaped structure at a temperature and a time sufficient to convert the pre-ceramic polymer resin to a ceramic thereby forming a reinforced ceramic composite.
35 citations
TL;DR: In this paper, the potential merits and uncertainties associated with multilayered oxide interphase approach were discussed in the context of designing environmentally durable interfaces for ceramic-matrix composites.
Abstract: Hi-Nicalon/SiC minicomposite specimens containing three oxide interphase layers (amorphous SiO2, monoclinic ZrO2, and amorphous SiO2) were prepared by chemical vapor deposition. The minicomposites exhibited graceful composite failure behavior with reasonable load-carrying capability in room-temperature tensile tests. Much of the composite behavior and load-carrying capability was retained even after matrix precracking and subsequent oxidation in air at 960°C for 10 h. In both the as-prepared and oxidized specimens, crack deflection and fiber pull-out occurred preferentially within the multilayered interphase region. The potential merits and uncertainties associated with this multilayered oxide interphase approach were discussed in the context of designing environmentally durable interfaces for ceramic-matrix composites.
35 citations
Patent•
Avco1
TL;DR: In this paper, the authors present an example of a spray-coating competition with an additonal phase in a CERAMIC MATRIX MATERIAL.
Abstract: THE INVENTION RELATES TO A SPRAY COATING COMPOSITION. THE COMPOSITION INCLUDES A CERAMIC MATRIX MATERIAL WHICH HAS BEEN REACTED WITH ADDITIVES TO FORM AN ADDITIONAL PHASE WITHIN THE MATRIX; THE COMBINATION OF MATRIX MATERIAL AND ADDITIONAL PHASE MATERIAL IMPROVING COATABILITY AND COATING PROPERTIES. A PREFERRED EXAMPLE OF SUCH A COMPOSITION IS AN ALUMINA (AL2O3), ZIRCONIA (ZR2) AND CHROMIA (CR2O3) MATRIX WITH AN ADDITONAL PHASE FORMED FROM ALUMINA, ZIRCONIA OR CHROMIA WITH IRON OXIDE (FE2O3) AND TITANIUM DIOXIDE (TIO2). SILICON DIOXIDE (SIO2) IS ALSO A CANDIDATE ADDITIVE FOR FORMING A GLASSY PHASE OR MULLITE WHEN REACTED WITH THE ALUMINA.
35 citations