PHYSICAL PROPERTIES OF MATERIALS

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Conductivity Often more convenient to consider a material as conducting electrical current rather than resisting its flow Conductivity of a material is simply the reciprocal of resistivity: Electrical conductivity = 1 r where conductivity has units of (-m) -1 ((-in) -1 ) ©2002 John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e”
Engineering Materials and Electrical Properties •Metals are the best conductors of electricity, because of their metallic bonding •Most ceramics and polymers, whose electrons are tightly bound by covalent and/or ionic bonding, are poor conductors •Many of these materials are used as insulators because they possess high resistivities ©2002 John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e”
Page 1 and 2: PHYSICAL PROPERTIES OF MATERIALS
Page 3 and 4: Physical Properties in Manufacturin
Page 5 and 6: Density Defined Weight per unit vol
Page 7 and 8: Thermal Expansion •Density of a m
Page 9 and 10: Thermal Expansion in Manufacturing
Page 11 and 12: Melting of Metal Alloys •Unlike p
Page 13 and 14: Figure 4.1 - Changes in volume per
Page 15 and 16: Thermal Properties •Thermal expan
Page 17 and 18: Volumetric Specific Heat The quanti
Page 19 and 20: Thermal Diffusivity The ratio of th
Page 21 and 22: Mass Diffusion Movement of atoms or
Page 23 and 24: Mass Diffusion in Manufacturing •
Page 25 and 26: Electrical Properties •Movement o
Page 27: Resistivity Property that defines a
Page 31 and 32: Electrical Properties in Manufactur
Page 33 and 34: Terms in Electrochemical Processes
Page 35 and 36: Figure 4.3 -Example of electrolysis
Page 37 and 38: Chemical Reactions in Decomposition

PHYSICAL PROPERTIES OF MATERIALS

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