Ceramic Matrix Composites
(CMCs)
Aeronautic, military and industrial applications require advanced materials that
can survive extreme environments. Recently, ceramics have attracted
enormous attention due to their superior properties, such as high-temperature
stability, oxidation and corrosion resistance, as well as enhanced thermo-
mechanical properties compared to that of metals and polymers. Monolitic
ceramics (SiC, B4C, Si3N4, SiB4), ceramic coatings like thermal barrier
coatings (TBC), environmental barrier coatings (EBC) and ceramic matrix
composites (CMCs) are some of the examples for high temperature ceramic
materials that can be classified as advanced materials. Although monolithic
ceramics possess desirable properties such as low density, high strength, high
temperature resistance, chemical inertness, wear and erosion resistance, they
exhibit extremely brittle behavior under thermal and mechanical loading
conditions. In order to overcome this drawback, fiber-reinforcemented
ceramics are used to increase toughness of the ceramic materials and are
termed as CMCs. They received considerable attention for thermo- structural
applications due to their low density, high modulus and good thermal shock
resistance. CMCs represent the latest entry in the field of composites. They are
largely suitable for the high temperature applications such as components in
thrust providing parts of rocket or missile systems and thermal protection
systems of the nose cap in re-entry vehicles.
(CMCs)
Aeronautic, military and industrial applications require advanced materials that
can survive extreme environments. Recently, ceramics have attracted
enormous attention due to their superior properties, such as high-temperature
stability, oxidation and corrosion resistance, as well as enhanced thermo-
mechanical properties compared to that of metals and polymers. Monolitic
ceramics (SiC, B4C, Si3N4, SiB4), ceramic coatings like thermal barrier
coatings (TBC), environmental barrier coatings (EBC) and ceramic matrix
composites (CMCs) are some of the examples for high temperature ceramic
materials that can be classified as advanced materials. Although monolithic
ceramics possess desirable properties such as low density, high strength, high
temperature resistance, chemical inertness, wear and erosion resistance, they
exhibit extremely brittle behavior under thermal and mechanical loading
conditions. In order to overcome this drawback, fiber-reinforcemented
ceramics are used to increase toughness of the ceramic materials and are
termed as CMCs. They received considerable attention for thermo- structural
applications due to their low density, high modulus and good thermal shock
resistance. CMCs represent the latest entry in the field of composites. They are
largely suitable for the high temperature applications such as components in
thrust providing parts of rocket or missile systems and thermal protection
systems of the nose cap in re-entry vehicles.
