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Hexagonal closest packing system

The three types of unit cells of the cubic system are simple, body-centered, and face-centered. The highest packing efficiency occurs with cubic (face-centered) and hexagonal closest packing. [Pg.384]

One could follow a similar practice and construct a similar hexagonal sandwich with two layers (B, Q of filler, but a cubic cell of higher symmetry can be. constructed the second system is thus characterized as cubic closest packed. The relation between the cubic unit cell (which is identical to the face-centered cubic cell we <... [Pg.72]

Heteropoly anions. 760-764 Hexagonal crystal system, 75. 78 Hexanuclear dusters. 816 VtexgonsA closest packed (hep)... [Pg.535]

Slip occurs along specific crystal planes (slip planes) and in specific directions (slip directions) within a crystal structure. Slip planes are usually the closest-packed planes, and slip directions are the closest-packed directions. Both face-centered-cubic (FCC) and hexagonal-close packed (HCP) structure are close packed structures, and slip always occurs in a close packed direction on a closepacked plane. The body-centered-cubic (BCC) structure is not, however, close packed. In a BCC system, slip may occur on several nearly close packed planes or directions. Slip planes and directions, as well as the number of independent slip systems (the product of the numbers of independent planes and directions), for these three structures are listed in Table 7.2. [Pg.240]

Heteropoly anions, 760-764 Hexagonal crystal system, 75, 78 Hexanuclear clusters, 816 Hexgonal closest packed (hep) system, 120 Hieber, Walter, 643 Highest occupied molecular orbital (HOMO). 351, 428, 721, 722... [Pg.524]

Heterogeneous equilibrium an equilibrium involving reactants and/or products in more than one phase. (6.5) Hex onal closest packed (hep) structure a structure composed of closest packed spheres with an ababab arrangement of layers the unit cell is hexagonal. (16.4) Homogeneous equiUbrium an equilibrium system where all reactants and products are in the same phase. (6.5) Homopolymen a polymer formed from the polymerization of only one type of monomer. (21.5)... [Pg.1105]

See other pages where Hexagonal closest packing system is mentioned: [Pg.89]    [Pg.89]    [Pg.72]    [Pg.44]    [Pg.190]    [Pg.72]    [Pg.72]    [Pg.120]    [Pg.383]    [Pg.74]    [Pg.383]    [Pg.65]    [Pg.337]    [Pg.150]    [Pg.176]    [Pg.82]    [Pg.318]    [Pg.424]    [Pg.95]    [Pg.44]    [Pg.183]    [Pg.120]    [Pg.10]    [Pg.110]    [Pg.520]   
See also in sourсe #XX -- [ Pg.42 ]



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