CEN 266 MATERIALS SCIENCE CEN 266 Material Science

MATERIALS SCIENCE OBJECTIVE: To understand the structure-property relation for selecting appropriate materials. To be

MATERIALS SCIENCE • Materials; atoms are combined together in the solid state. • Material

The Traditional Material Science Tedrahedron Nature Materials, 11, 560 -563 Microstructure Properties Make existing

Classification of Materials • Based on the atomic structure: • Metals and Alloys; metallic

Classification of Materials • Metals; strong, ductile, high density, tough, stiff, conductors • Polymers;

Advanced Materials • Semiconductors; Materials which have electrical properties between conductors (metals and metal

References Donald R. Askeland, Pradeep P. Fulay, Wendelin J. Wright, The Science and Engineering

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CEN 266 MATERIALS SCIENCE CEN 266 Material Science Dr. Berna Topuz Ankara University Chemical Engineering Department 1

MATERIALS SCIENCE OBJECTIVE: To understand the structure-property relation for selecting appropriate materials. To be able to combine a basic understanding of the relation between structure of materials over nanometer to millimeter range scale and performance in electrical, optical, thermal and structural applications. 2 CEN 266 Material Science

MATERIALS SCIENCE • Materials; atoms are combined together in the solid state. • Material Science; investigates the relationships between the structure and properties of the materials – Developing new materials of a material to produce desirable properties for specific applications. 3 CEN 266 Material Science • Materials Engineering; designing (engineering) the structure

The Traditional Material Science Tedrahedron Nature Materials, 11, 560 -563 Microstructure Properties Make existing materials better Develop new materials, devices and applications Performance Properties Characterization Processing CEN 266 Material Science Processing Structure 4

Classification of Materials • Based on the atomic structure: • Metals and Alloys; metallic elements (copper, alloy steels, …. ) • Ceramics; between metallic and non-metallic elements (Al 2 O 3, Si. O 2, Mg. O…. . ) • Polymers; contain carbon, hydrogen, and other non-metallic elements (polyethylene, nylon, silicone rubber……) • Composites; are composed of at least two individual materials (fiberglass, graphite-epoxy……. . )

Classification of Materials • Metals; strong, ductile, high density, tough, stiff, conductors • Polymers; weak, ductile, low density, insulators • Ceramics; strong, brittle, low density, insulators • Composites; strong, ductile, low density, conductors, insulators • Selected engineering properties are; electrical/thermal conductivity, stress, strain, strength, ductility, elastic modulus, hardness, toughness

Advanced Materials • Semiconductors; Materials which have electrical properties between conductors (metals and metal alloys) and insulators (ceramics and polymers). • Biomaterials; Natural or synthetic materials that can be used in medical applications to support or replace diseased tissue. • Smart (Responsive) Materials; New and state-of-the-art materials • Nanomaterials; Materials which are characterized by their tiny size measured in nanometers 7

References Donald R. Askeland, Pradeep P. Fulay, Wendelin J. Wright, The Science and Engineering of Materials, Sixth Edition William D. Callister, David G. Rethwisch, Materials Science and Engineering, Eighth Edition, Wiley, 2011. 8