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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14.1 General It is not generally recognized that the development of materials with
new high levels of magnetic properties is responsible for the growth of many new
devices such as the tape recorder, ferrite magnets in television sets, memory ...
ANSWER 8 = fi0H + n0M, but since n0M is always many times greater than /i0H
for a ferromagnetic material, The magnetic moment of an iron atom is 4 Bohr
magnetons. Let us assume that when B - Bs, all magnetic moments are aligned.
Conversely, in hard magnetic materials the desired structure consists of tiny (300
A) particles, each with only one domain and aligned to provide a strong magnetic
field. In ceramic magnets the inverse spinel structure is used to produce soft ...
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A General View of the Problems
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