ceramic-matrix composite material

Also known as: CMC material

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June 24, 2026

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Ceramic-matrix composites (CMCs) are advanced materials designed for demanding environments where polymers or metals would degrade. They consist of ceramic materials, such as alumina or silicon carbide, embedded within a ceramic matrix.1

CMCs offer superior heat resistance and low abrasive and corrosive properties. However, their primary drawback is brittleness, which can be mitigated by reinforcing them with fibers or whiskers. Unlike metals and polymers, ceramics cannot be melted and are typically produced through sintering.1

A key benefit of CMCs in applications like aircraft engines is their ability to withstand higher operating temperatures, leading to improved combustion efficiency and reduced fuel consumption. Their low density also contributes to significant weight savings. While CMCs are less tough than metals, they represent a substantial improvement over conventional ceramics.12

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materials science
Metal-matrix and ceramic-matrix composites
For the latter applications, ceramic-matrix composites (CMCs) are seeing increasing use, although the technology for CMCs is less mature than that for PMCs. Ceramics consist of alumina, silica, zirconia, and other elements refined from fine earth and sand or of synthetic materials, such as silicon nitride or silicon carbide.…
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For the latter applications, ceramic-matrix composites (CMCs) are seeing increasing use, although the technology for CMCs is less mature than that for PMCs. Ceramics consist of alumina, silica, zirconia, and other elements refined from fine earth and sand or of synthetic materials, such as silicon nitride or silicon carbide.…
Read More

tribological ceramics
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Ceramic-matrix composites represent an improvement over alumina in that large primary grains (e.g., silicon carbide [SiC]), which are not easily loosened, are combined with a more compliant matrix (e.g., silica [Si], silicon nitride [Si₃N₄], or glass), which resists microcracking. Ceramics toughened with whiskers, fibres, or…
Read More
Ceramic-matrix composites represent an improvement over alumina in that large primary grains (e.g., silicon carbide [SiC]), which are not easily loosened, are combined with a more compliant matrix (e.g., silica [Si], silicon nitride [Si₃N₄], or glass), which resists microcracking. Ceramics toughened with whiskers, fibres, or…
Read More