Concise Dictionary of Materials Science Part 2 pdf
Concise Dictionary of Materials Science Part 2 pdf
... energy of exchange interaction and equal but oppositely directed magnetic © 20 03 by CRC Press LLC B β-Al 2 O 3 Impure alumina whose main impurity is Na 2 O. β eutectoid Ti system Name of a ... forces for growth of variously oriented grains and different mobility of their boundaries (see compromise texture). Grain growth commonly (but not always) results in weakening of...
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Concise Dictionary of Materials Science Part 1 pdf
... sublattices: an FCC sublattice of O 2 ions and a sublattice of Al 3+ ions occupying two thirds of the octahedral sites in the first one. α-Fe Allotropic form of iron having BCC crystal structure ... A α-Al 2 O 3 Pure alumina. Polycrystalline Al 2 O 3 is known as corundum and single crystals as sapphire. Its crystal structure can be described as consisting of two sublatt...
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Concise Dictionary of Materials Science Part 3 ppt
... result of the preferential arrange - ment of precipitates at subboundaries (see heterogeneous nucleation), which inhibits their migration (see particle drag). Because of this, an increase of the ... of the elastic strain energy associated with lattice defects, which might contribute to the for - mation of recrystallization nuclei. Continuous recrystallization is observed in m...
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Concise Dictionary of Materials Science Part 4 potx
... directions 〈110〉. The radius of tetrahedral void equals 0 .22 5R and that of octahedral void is 0.415R, where R is the atomic radius. In a densely packed structure, the atoms of each most densely packed ... the hollows of the lower layer. In the FCC structure, the atom centers of the second layer are arranged in the B hollows of the first layer (see Fig - ure F .2) . The ato...
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Concise Dictionary of Materials Science Part 5 potx
... between the number of components, C, the number of phases, P, and the number of degrees of freedom, F, in some equilibrium thermodynamic system: F = C – P + 2 in the case of varying temperature ... independently. In the case of the arbitrarily chosen temperature, the compositions of the phases are fixed, and in the case of the arbitrarily chosen composition of one of...
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Concise Dictionary of Materials Science Part 6 ppt
... Manifestation of the difference in diffusion rates of the atoms of different components in the case of vacancy mechanism, i.e., in substitutional solid solutions. An annealing of a sample made of two ... the coordinates of the atoms at the origin and inside the unit cell. For instance, the basis for BCC structure is (0 0 0; 1 /2 1 /2 1 /2) and for FCC structure (0 0 0; 1...
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Concise Dictionary of Materials Science Part 9 ppt
... were present in such a particle, the particle’s free energy would be increased. In the particle, the energy of the magnetic poles at its surface is the lowest in the case of the largest pole spacing. ... distribution Histogram displaying the frequency of grains (or particles) of different sizes. The shape of grain size distribution after normal grain © 20 03 by CRC Press LLC...
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Concise Dictionary of Materials Science Part 11 pps
... Avogadro-Konstante Avrami equation Avramische Gleichung axial angle Achsenwinkel axial ratio Achsenverhältnis © 20 03 by CRC Press LLC
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