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Online since: November 2010
Authors: Feodor M. Borodich
Khrushchov and his colleagues at the USSR Academy of Sciences (IMASH was
founded in Moscow in 1938), and by a research group that was called the Physics and Chemistry of
Rubbing Solids, founded by F.P.
Solids Structures Vol. 30 (1993), p. 1513 [54] F.M.
Solids Structures Vol. 35 (1998), p. 1363 [63] B.E.
Mechanics Materials Structures Vol. 4 (2009), p. 523 [90] F.M.
Bulychev: Physics Chemistry Materials Treatment #3 (1978), p. 134 (Russian) [104] B.R.
Solids Structures Vol. 30 (1993), p. 1513 [54] F.M.
Solids Structures Vol. 35 (1998), p. 1363 [63] B.E.
Mechanics Materials Structures Vol. 4 (2009), p. 523 [90] F.M.
Bulychev: Physics Chemistry Materials Treatment #3 (1978), p. 134 (Russian) [104] B.R.
Online since: January 2012
Authors: A.K. Mukhopadhyay
(a)
(b)
Optimization of Alloy Chemistry of Commercial Al Alloys
2xxx Series Al Alloys: Figure 4 shows the Al-Cu-Mg phase diagram showing composition ranges for various 2xxx series alloys [15].
Development of as-cast grain structure in (a) 7449, (b) & (c) 7449 containing Sc.
Optical micrographs showing weld grain structure developed in alloys (b) 7010, (c) 7010+Ag and (d) 7010+Sc.
As explained earlier in this article, such changes in the weld grain structure improved the weldability.
[9] L.F.Mondolfo, Aluminum Alloys: Structure and Properties, Butterworths & Co., London, 1976
Development of as-cast grain structure in (a) 7449, (b) & (c) 7449 containing Sc.
Optical micrographs showing weld grain structure developed in alloys (b) 7010, (c) 7010+Ag and (d) 7010+Sc.
As explained earlier in this article, such changes in the weld grain structure improved the weldability.
[9] L.F.Mondolfo, Aluminum Alloys: Structure and Properties, Butterworths & Co., London, 1976
Online since: August 2004
Authors: Laurent Antoni
The
deposition of such layer on porous electrode structures was possible owing to the emergence of
colloidal fabrication and co-sintering processes.
Perovskite structures, as those based on LaGaO3, were also investigated as new electrolyte materials.
Perovskite structured ceramic has been the most frequently-used material for SOFCs cathode, and in particular the strontium doped lanthanum manganite (LSM).
A range of alternative perovskite-structured ceramic electrodes with complete or partial replacement of Mn at the B site in the perovskite structure by Co and/or Fe have been investigated.
For years, the interconnect development has been primarily focused on the family of complex ceramic oxides with perovskite structure.
Perovskite structures, as those based on LaGaO3, were also investigated as new electrolyte materials.
Perovskite structured ceramic has been the most frequently-used material for SOFCs cathode, and in particular the strontium doped lanthanum manganite (LSM).
A range of alternative perovskite-structured ceramic electrodes with complete or partial replacement of Mn at the B site in the perovskite structure by Co and/or Fe have been investigated.
For years, the interconnect development has been primarily focused on the family of complex ceramic oxides with perovskite structure.
Online since: October 2008
Authors: B. Basu, G.B. Raju
Crystal structure, synthesis,
densification, structure-property relations, applications of TiB2 is discussed in the following
sections.
The B:M ratio affects both the electronic structure and properties.
Fig. 3a shows the typical grain boundary structure of polycrystalline TiB2.
Vol. 11: Structure and Properties of Ceramics.
Georg Will: Journal of Solid State Chemistry, 177 (2004), 628-631. 15.
The B:M ratio affects both the electronic structure and properties.
Fig. 3a shows the typical grain boundary structure of polycrystalline TiB2.
Vol. 11: Structure and Properties of Ceramics.
Georg Will: Journal of Solid State Chemistry, 177 (2004), 628-631. 15.
Online since: March 2012
Authors: Hans Eckhardt Schaefer, Helmut Mehrer, Graeme E. Murch, Irina V. Belova
The crystal structure of MoSi2 is tetragonal of C11b type, space group 14/mmm (see Fig.2).
The structure may also be viewed as atomic square-lattice layers stacked in the tetragonal direction and shifted by (1/2, 1/2, 1/6).
Therefore, it is this range that dominates the lifetime of a structure.
Figure 18 Schematic view of two types of edge dislocations in the basal plane of the molybdenum disilicide structure.
LeClaire, Physical Chemistry -- an Advanced Treatise, Vol.
The structure may also be viewed as atomic square-lattice layers stacked in the tetragonal direction and shifted by (1/2, 1/2, 1/6).
Therefore, it is this range that dominates the lifetime of a structure.
Figure 18 Schematic view of two types of edge dislocations in the basal plane of the molybdenum disilicide structure.
LeClaire, Physical Chemistry -- an Advanced Treatise, Vol.
Online since: April 2014
Authors: Helmut Mehrer
With decreasing temperature the structure of the melt and its specific volume will gradually change.
At high viscosities around 1012 Pas the structure of the supercooled melt begins to deviate from the structure that would be obtained if sufficient time were allowed to reach configurational equilibrium.
The structure will readjust to the pertaining temperature and its volume (enthalpy) will decrease.
This is because atoms can move more easily through the more open structure of the unrelaxed glass than through the denser relaxed structure.
Le Claire, Correlation Effects in Diffusion in Solids, in: Physical Chemistry – an Advanced Treatise, Vol.
At high viscosities around 1012 Pas the structure of the supercooled melt begins to deviate from the structure that would be obtained if sufficient time were allowed to reach configurational equilibrium.
The structure will readjust to the pertaining temperature and its volume (enthalpy) will decrease.
This is because atoms can move more easily through the more open structure of the unrelaxed glass than through the denser relaxed structure.
Le Claire, Correlation Effects in Diffusion in Solids, in: Physical Chemistry – an Advanced Treatise, Vol.
Online since: January 2016
Authors: Milton Sergio Fernandes de Lima
This phenomenon, known as banding, is produced by the alternate growth of two structures [[] M.
Kurz, About the banded structure in rapidly solidified dendritic and eutectic alloys, Acta Metall.
Turnbull, On the relation between crystallization rate and liquid structure, J.
Chemistry 66 (1962) 609-613. ]: (14) Where Rg is the gas constant, V0 is the sound speed in the solid and DSt is the molar entropy of transformation.
These structures are the base of the classification of titanium alloys as alpha, near-alpha, alpha-beta and beta.
Kurz, About the banded structure in rapidly solidified dendritic and eutectic alloys, Acta Metall.
Turnbull, On the relation between crystallization rate and liquid structure, J.
Chemistry 66 (1962) 609-613. ]: (14) Where Rg is the gas constant, V0 is the sound speed in the solid and DSt is the molar entropy of transformation.
These structures are the base of the classification of titanium alloys as alpha, near-alpha, alpha-beta and beta.
Online since: June 2010
Authors: Marcello Cabibbo, Stefano Spigarelli, A. Fabrizi, C. Paternoster, R. Cecchini, P.V. Kiryukhantsev-Korneev, Marie Haidopoulo
At higher magnification (Fig. 1(b)), the Cr-N
crystal structure is visible, showing a very fine structure, with grain sizes ranging 15 to 35 nm.
In [71], TEM inspections of Ti-Cr-B-N films did not show a pronounced columnar structure, while AFM analyses showed a well-developed columnar structure.
Ti-Cr-B-N/Si coating showed a multilayered structure after air annealing.
Ti-Al-Si-B-N/Si showed a similar multilayered structure after air annealing.
Ho: Materials Chemistry and Physics Vol. 59 (1999), p. 154
In [71], TEM inspections of Ti-Cr-B-N films did not show a pronounced columnar structure, while AFM analyses showed a well-developed columnar structure.
Ti-Cr-B-N/Si coating showed a multilayered structure after air annealing.
Ti-Al-Si-B-N/Si showed a similar multilayered structure after air annealing.
Ho: Materials Chemistry and Physics Vol. 59 (1999), p. 154
Online since: April 2014
Authors: Alexey Rodin, Boris Bokstein
However, recently [26] the effect of temperature on GB structure was studied by MD simulations.
The dependence of GBD parameters on GB structure, determined by orientation of GB, is not the goal of this paper.
Such mergers can occur well below the pre-melting temperature range when the GB structures are still relatively ordered.
Perraillon: in “Grain Boundary Structure and Kinetics” Metals Park, OH: Amer.
Chemistry, V.15 (1941) p. 296 [71] I.
The dependence of GBD parameters on GB structure, determined by orientation of GB, is not the goal of this paper.
Such mergers can occur well below the pre-melting temperature range when the GB structures are still relatively ordered.
Perraillon: in “Grain Boundary Structure and Kinetics” Metals Park, OH: Amer.
Chemistry, V.15 (1941) p. 296 [71] I.
Online since: February 2016
Authors: Morgan E. Ware, Oksana Lytvyn, Alexander A. Efremov, Peter M. Lytvyn, Igor V. Prokopenko, Yurii I. Mazur, D. Fologia, Gregory J. Salamo
The advantage of this approach lies mainly in the possibility to form simple three-dimensional structures.
Fabrication of atomic-scale structures on Si (001) surfaces.
Shao, High-Resolution Imaging and Nano-Manipulation of Biological Structures on Surface, Microscopy Research And Technique 74 (2011) 614-626
Will, Linking and manipulation of gold multi-nanoparticle structures using dithiols and scanning force microscopy, J.
Physical Chemistry B 103 (1999) 3647-3650
Fabrication of atomic-scale structures on Si (001) surfaces.
Shao, High-Resolution Imaging and Nano-Manipulation of Biological Structures on Surface, Microscopy Research And Technique 74 (2011) 614-626
Will, Linking and manipulation of gold multi-nanoparticle structures using dithiols and scanning force microscopy, J.
Physical Chemistry B 103 (1999) 3647-3650