Engineering materials and their applications
This edition of the classic text/reference book has been updated and revised to provide balanced coverage of metals, ceramics, polymers and composites. The first five chapters assess the different structures of metals, ceramics and polymers and how stress and temperature affect them. Demonstrates how to optimize a material's structure by using equilibrium data (phase diagrams) and nonequilibrium conditions, especially precipitation hardening. Discusses the structures, characteristics and applications of the important materials in each field. Considers topics common to all materials—corrosion and oxidation, failure analysis, processing of electrical and magnetic materials, materials selection and specification. Contains special chapters on advanced and large volume engineering materials plus abundant examples and problems.
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A typical case is iron oxide crystals in which both Fe2+ and Fe3+ are present.
The normal FeO structures is like that of NaCl, but if we make up the crystal with
some Fe3+ ions present, one Fe2+ is absent to balance two Fe3+ ions (Fig. 7.23)
ANSWER Power = £/ / = ^2 = 6 A fl = 7 = ^ = 18.3 ohms 110 / b 0 l 1 RA R = p-r or
/ = — A p , 18.3 ohms x (0.1 in. x 0.0254 m/in.)2 x (w/4) oc - 1.079 x 10"6 ohm-m
Original *Fe3+ Fe2+ Fe2+ Fe2+ Fe2+ « e (B) Fe2+ Conduction and carriers 588 ...
In Chapter 7, we discussed "~Briefly tKe~concept of an electron hole in the (Fe2+
, Fe3+)O2~ lattice. Associated with each Fe3+ ion there is an electron hole, a
place to which a traveling electron is attracted because the electrical field of O2- ...
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The Problem of Materials Selection and Development
Metallic Structures The Unit Cell
Effects of Stress and Temperature on Simple Metal
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