Metal matrix composites (MMCs) are advanced materials composed of a metal matrix and one or more reinforcing materials, such as ceramic or metallic particles, fibers, or whiskers. They are used in a variety of applications where high strength, stiffness, and/or resistance to wear and fatigue are required. In aeronautical configurations, MMCs are used to improve the performance and durability of various components, such as engine parts, landing gears, and airframe structures.
Some of the commonly used MMCs in aeronautical configurations are:
a.Aluminum matrix composites (AMCs):
These composites consist of aluminum as the matrix and ceramic particles, fibers, or whiskers as the reinforcement. They offer high strength, stiffness, and wear resistance, and are used in engine components, such as pistons, connecting rods, and cylinder liners.
b.Titanium matrix composites (TMCs):
These composites consist of titanium as the matrix and ceramic or metallic particles, fibers, or whiskers as the reinforcement. They offer high strength, stiffness, and corrosion resistance, and are used in airframe structures and engine components, such as compressor blades and disks.
c.Magnesium matrix composites (MMCs):
These composites consist of magnesium as the matrix and ceramic particles or fibers as the reinforcement. They offer high specific strength and stiffness, and are used in airframe structures and landing gears.
d.Nickel matrix composites (NMCs):
These composites consist of nickel as the matrix and ceramic or metallic particles, fibers, or whiskers as the reinforcement. They offer high strength, stiffness, and temperature resistance, and are used in engine components, such as turbine blades and disks.
e.Copper matrix composites (CMCs):
These composites consist of copper as the matrix and ceramic or metallic particles, fibers, or whiskers as the reinforcement. They offer high thermal conductivity and wear resistance, and are used in heat exchangers and electrical contacts.
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