Results 251 to 260 of about 4,565,563 (306)
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2016
This chapter gives an overview of existing active phase formation rules for high-entropy alloys (HEAs). A parametric approach using physiochemical parameters including enthalpy of mixing, entropy of mixing, melting points, atomic size difference, and valence electron concentration is used to delineate phase formation rules for HEAs, with a reference to
Yong Zhang +3 more
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This chapter gives an overview of existing active phase formation rules for high-entropy alloys (HEAs). A parametric approach using physiochemical parameters including enthalpy of mixing, entropy of mixing, melting points, atomic size difference, and valence electron concentration is used to delineate phase formation rules for HEAs, with a reference to
Yong Zhang +3 more
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Phase formation during reactive molybdenum-silicide formation
Journal of Materials Research, 1990Silicide formation due to thermal treatment of thin (5–10 nm) molybdenum films on single-crystal, polycrystalline, and hydrogenated amorphous silicon substrates in the temperature range of 100 to 1000 °C was studied, with an emphasis on the initial interactions. The molybdenum deposition, annealing, and characterization using Raman scattering and Auger
C. M. Doland, R. J. Nemanich
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Phase formations in Co–Silicon system
Microelectronic Engineering, 2004Interactions between thin cobalt, 40 nm, and a thick - 250 nm - silicon film were investigated by in situ sheet resistance measurements. Poly and amorphous silicon films, both deposited by CVD, were used. MeV 4He+ Rutherford Backscattering and X-ray diffraction techniques were used to infer the kinds and thicknesses of the compounds formed.
CORNI, Federico +5 more
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Gas-phase mechanism for dioxin formation
Chemosphere, 2003We consider the formation of dioxin in the gas phase through the combination of phenoxy radicals in the context of a recently published scenario regarding the possibility of forming highly chlorinated benzenes in poorly mixed systems. It is demonstrated that the production of free chlorine in fuel lean combustion systems and subsequent mixing and ...
V I, Babushok, W, Tsang
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Phase formation of associating polymers: gelation, phase separation and microphase formation
Advances in Colloid and Interface Science, 1996Abstract Polymers exhibit a variety of condensed phases when some of their segments are capable of forming weak bonds which can be created and destroyed by thermal motion. Transition from one phase to another caused by such ‘ segment association ’ is reversible by the change of the temperature and the concentration, so that it is called ‘ reversible ...
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Non-equilibrium phase formation
Proceedings, annual meeting, Electron Microscopy Society of America, 1990The most important advantage of EM’s is in situ experiments on detailed processes of the same phenomena that occur in bulk materials. In recent years, in situ experiments with HVEM’s, in particular with a 3MV ultra-HVEM , has made it possible to create non-equilibrium phases, which do not exist in nature, or to control and design materials on an atomic
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Adaptive phase formation in martensitic transformation
Physical Review B, 1991It is shown that an appearance of an intermediate martensite phase called adaptive martensite may be expected if the surface energy of a boundary between two orientational variants of the normal martensite phase is very low and the typical lattice-mismatch-related elastic energy is high.
, Khachaturyan +2 more
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2014
In the introduction to the topic of reaction kinetics, two important classes of reactions were identified, homogeneous and heterogeneous reactions. Heterogeneous reactions include reactions that result in solute transfer across stable planar interfaces, solute transfer across unstable nonplanar interfaces and phase formation reactions.
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In the introduction to the topic of reaction kinetics, two important classes of reactions were identified, homogeneous and heterogeneous reactions. Heterogeneous reactions include reactions that result in solute transfer across stable planar interfaces, solute transfer across unstable nonplanar interfaces and phase formation reactions.
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Formation of Tetrahedral Phases
1969The properties of semiconducting compounds are governed primarily by the short-range order, i. e., by the chemical nature of atoms, the geometry of their distribution, and the absolute distances between them. The crystal structure of semiconducting compounds is a very important characteristic of the short-range order and, in the majority of such ...
Lev I. Berger, Vitalii D. Prochukhan
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Formation of interfaces in bicontinuous phases
Physical Review E, 1994With the charge-frustrated model, this paper examines the structure of interfaces in bicontinuous oil-water-surfactant phases. We analyze the nonlinear model by variational perturbation theory with a reference system that explicitly allows for interfaces.
, Deem, , Chandler
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