0198 plm qc1 rps mp v v p type a class of extrinsic

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Unformatted text preview: k Publishers.) athermal Describing a ph thermally activated. That is, not a function of time, but d martensite transformations i atomic packing factor (AP filled by spherical atoms. atomic scale structure T the size scale of an atom (i. to 10 10 m). austenite The face-center The FCC phase in iron alloy austenite. bainite A two-phase micr ferrite and cementite. Bainit steel is quenched to a tempe region but above the marten band gap The forbidden levels located between the to the bottom of the conductio insulator. basal plane The top or b hexagonal crystals the basal placed on the six corners of c axis. basal slip Deformation th of HCP crystals as a result basis The number of atom position. bipolar junction transistor semiconductor device comp material— either npn or pnp block copolymer A polym mers in which each mer occ molecule. blow molding A process oxide glass or polymer is ex by blowing air from the top body-centered cubic (BCC which atoms are located in plus one in the center of the pg593 [R] G1 7-27060 / IRWIN / Schaffer iq 12.01.98 plm QC1 rps MP v v p-type A class of extrinsic semiconductors containing dopant atoms with fewer than four valence electrons. paramagnetic A class of magnetic materials in Materials which Chapter 14 Composite the internal field is parallel to the external field. These materials can be increased by “reinforcing” the aggregate composite composite’s tensile strengthshow a weak response to external magnetic with steel rods.fields.reinforcing rods are placed in the composites in the locations that These will bear the largest tensile loads. The interfacial strength between the “fibers” and the particulate composites Composite systems in which matrix is increased by having ridges on the steel rods, which form a mechanical bond with the reinforcement phase consists of small particles. the surrounding matrix. The addition of the steel rods transforms the composite from nearly isotropic to highly anisotropic.corrosion surface condition under which passivation A Another type of aggregate composite is a particulate composite. Examples include a material displays aluminum alloy matrix, and rubber its SiC or Al2 O3 particles embedded in an a significant positive shift inparticles in epoxy. In these reductionthe volume fraction of the reinforcing phase is much lower than composites potential. that in cement. Typically, reinforcing-phase volume fractions are about 0.15. Since the A quantum mechanics aspect ratio of Pauli exclusion principle the reinforcing particles is approximately 1, particulate composites are concept stating that no two interacting electrons can have essentially isotropic. The strengthening mechanism in particulatenumbers. is different from that in either the same four quantum composites concrete or fiber-reinforced composites. In particulate composites the particle-matrix pearlite thermal expansion coefficient A two-phase microstructure of alternate metal mismatch results in a high dislocation density in the matrix during cooling from the fabricationlamellae occurring in s...
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This note was uploaded on 02/25/2013 for the course PHYS 2202 taught by Professor Sowell during the Spring '10 term at Georgia Tech.

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