Particulate composites

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Particulate composites

  1. 1. Particulate Composites And Their Applications(c) Bob Cottis 1995
  2. 2. For more help contact me Muhammad Umair Bukhari Engr.umair.bukhari@gmail.com www.bzuiam.webs.com 03136050151(c) Bob Cottis 1995
  3. 3. Particulate Composites A composite that consists of tiny particles of one material embedded in another material. The particulates can be very small particles (< 0.25 microns), chopped fibers (such as glass), platelets, hollow spheres, or new materials such as bucky balls or carbon nano-tubes.(c) Bob Cottis 1995
  4. 4. Particulate Composites They provide reinforcement to the matrix material thereby strengthening the material. The combination of reinforcement and matrix can provide for very specific material properties.(c) Bob Cottis 1995
  5. 5. Advantages of Particulate composites  Provide reinforcement to the matrix material  Improved material properties  Tailored material properties  Manufacturing flexibility(c) Bob Cottis 1995
  6. 6. Advantages of Particulate composites  High creep resistance  High tensile strength at elevated temperatures  High toughness  High strength to weight ratio (low density high tensile strength)(c) Bob Cottis 1995
  7. 7. In Which Materials Particulate Copmosite can be Used????  Metals (Aluminium alloy )  Polymers(Rubber)  Ceramics (Concrete)(c) Bob Cottis 1995
  8. 8. Applications  Appliances, toys, electrical products, computer housings, cell phone casings, office furniture, helmets, etc. are made from particulate reinforced plastics.  Glass reinforced plastics are used in many automotive applications including body panels, bumpers, dashboards, and intake manifolds.(c) Bob Cottis 1995
  9. 9. Applications  Brakes are made of particulate composite composed of carbon or ceramics particulates.  Cermets contain hard ceramic particles dispersed in a metallic matrix. Eg.: tungsten carbide (WC) or titanium carbide (TiC) embedded cobalt or nickel used to make cutting tools.(c) Bob Cottis 1995
  10. 10. Applications  Widely used for automotive applications including pistons  Concrete is cement strengthened by adding particulates.  Reinforced rubber is obtained by strengthening with 20-50 nm carbon-black particles. Used in auto tires.(c) Bob Cottis 1995

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