Particulate composites
10
(c) Bob Cottis 1995 Particulate Composites And Their Applications
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Transcript of Particulate composites
(c) Bob Cottis 1995
Particulate CompositesAnd
Their Applications
(c) Bob Cottis 1995
For more help contact me
Muhammad Umair Bukhari
www.bzuiam.webs.com
03136050151
(c) Bob Cottis 1995
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
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
Advantages of Particulate composites
Provide reinforcement to the matrix material
Improved material properties
Tailored material properties
Manufacturing flexibility
(c) Bob Cottis 1995
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
In Which Materials Particulate Copmosite can be Used???? Metals(Aluminium alloy ) Polymers(Rubbe
r) Ceramics
(Concrete)
(c) Bob Cottis 1995
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
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
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.
![Composites Part B · microstructure providing higher failure strain [7–9]. Matrix reinforce-ments in particulate form permit lower processing cost, improvement in mechanical properties,](https://static.fdocuments.in/doc/165x107/614ab74612c9616cbc69986f/composites-part-b-microstructure-providing-higher-failure-strain-7a9-matrix.jpg)
