Strain- and kinetically induced suppression of phase separation in MBE-grown metastable and unstable GaInAsSb quaternary alloys for mid-infrared optoelectronics

2013 ◽  
Vol 31 (3) ◽  
pp. 03C125 ◽  
Author(s):  
Asli Yildirim ◽  
John P. Prineas
Keyword(s):  
Phase Separation ◽  
Quaternary Alloys ◽  
Mid Infrared

Nanoscale Mid-Infrared Imaging of Phase Separation in a Drug–Polymer Blend

2012 ◽  
Vol 101 (6) ◽  
pp. 2066-2073 ◽  
Author(s):  
Bernard Van Eerdenbrugh ◽  
Michael Lo ◽  
Kevin Kjoller ◽  
Curtis Marcott ◽  
Lynne S. Taylor
Keyword(s):  
Phase Separation ◽  
Polymer Blend ◽  
Infrared Imaging ◽  
Mid Infrared

Effect of Mo and Ni on Phase Separation in Fe-Cr=Mo-Ni Quaternary Alloys

2011 ◽  
Vol 409 ◽  
pp. 449-454
Author(s):  
Ling Ling Yang ◽  
Yoshiyuki Saito
Keyword(s):  
Numerical Simulation ◽  
Phase Separation ◽  
Numerical Model ◽  
Accurate Solution ◽  
Ternary Alloys ◽  
Quaternary Alloys ◽  
Hilliard Equation ◽  
Model Based ◽  
Newton Raphson ◽  
Cahn Hilliard Equation

Numerical simulation of phase separation in Fe-Cr-Mo and Fe-Cr-Ni ternary alloys and Fe-Cr-Mo-Ni quaternary alloys were performed with use of the Cahn-Hilliard equation for ternary and quaternary alloys. A new numerical model based on the Gauss-Seidel and Newton Raphson methods was utilized to obtain efficient and accurate solution.

scholarly journals High transparent mid-infrared silicon “window” decorated with amorphous photonic structures fabricated by facile phase separation

2018 ◽  
Vol 26 (14) ◽  
pp. 18734
Author(s):  
Yafeng Zhang ◽  
Xinhua Hu ◽  
Shao-Wei Wang ◽  
Bo Zhang ◽  
Lei Shi ◽  
...  
Keyword(s):  
Phase Separation ◽  
Mid Infrared ◽  
Photonic Structures

Computer Simulation of Spinodal Decomposition in Duplex Stainless Steels

2012 ◽  
Vol 706-709 ◽  
pp. 1509-1514 ◽  
Author(s):  
Yoshiyuki Saito
Keyword(s):  
Phase Separation ◽  
Quaternary Alloy ◽  
Minor Element ◽  
Ternary Alloys ◽  
Quaternary Alloys ◽  
Hilliard Equation ◽  
Chemical Free Energy ◽  
Simulation Results ◽  
Cahn Hilliard Equation ◽  
Theoretical Analyses

Numerical simulations of phase separation in Fe-Cr-Mo―Ni or Fe-Cr-MoーTi quaternary alloys similar to ferrite phases in dplex stainless steeswere performed by the Cahn-Hilliard equation. We obtained that the asymptotic behaviour of minor element Ni, Mo, Ti in an Fe-Cr-X quaternary alloy along a trajectory of a peak top of the major element Cr is classified into three groups according to the sign of the second derivative of the chemical free energy with respect to the compositions of Cr and X(X=Mo, Ni or Ti]. It is also predicted that that small addition of Mo upto 10% accelerates phase separation of Cr. It seems that the optimum value of Mo exists to enhance the phase separation of Cr in Fe-Cr-Mo ternary alloys. Simulation result indicates that the phase separation of Cr is most enhanced with addition of 1% Mo. The above mentioned simulation results given by the numerical simulation by the Cahn-Hilliard equation were in good agreement with those obtained by the Monte Carlo simulation Theoretical analyses were performed in order to discuss the simulation results. On the basis of theb simulation results Optimum materials design of the duplex stainless steel has been established.

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

Phase separation in sol gel-derived ceramic films of silica-zirconia, alumina-zirconia, and titania-zirconia system

1994 ◽  
Vol 52 ◽  
pp. 646-647
Author(s):  
J. Tong ◽  
L. Eyring
Keyword(s):  
Fracture Toughness ◽  
Phase Separation ◽  
Sol Gel ◽  
Great Influence ◽  
High Strength ◽  
Chemical Durability ◽  
Separation Method ◽  
Toughening Mechanism ◽  
Ceramic Films ◽  
Zirconia Toughened Alumina

There is increasing interest in composites containing zirconia because of their high strength, fracture toughness, and its great influence on the chemical durability in glass. For the zirconia-silica system, monolithic glasses, fibers and coatings have been obtained. There is currently a great interest in designing zirconia-toughened alumina including exploration of the processing methods and the toughening mechanism.The possibility of forming nanocrystal composites by a phase separation method has been investigated in three systems: zirconia-alumina, zirconia-silica and zirconia-titania using HREM. The morphological observations initially suggest that the formation of nanocrystal composites by a phase separation method is possible in the zirconia-alumina and zirconia-silica systems, but impossible in the zirconia-titania system. The separation-produced grain size in silica-zirconia system is around 5 nm and is more uniform than that in the alumina-zirconia system in which the sizes of the small polyhedron grains are around 10 nm. In the titania-zirconia system, there is no obvious separation as was observed in die alumina-zirconia and silica-zirconia system.

Phase separation in fluid additive hard sphere mixtures?

1998 ◽  
Vol 95 (2) ◽  
pp. 131-135 ◽  
Author(s):  
DOUGLAS HENDERSON DEZSO BODA KWONG-YU CHAN
Keyword(s):  
Phase Separation ◽  
Hard Sphere

The plant response to heat requires phase separation

Nature ◽  
2020 ◽  
Vol 585 (7824) ◽  
pp. 191-192 ◽  
Author(s):  
Simon Alberti
Keyword(s):  
Phase Separation ◽  
Plant Response

AMICA: the Antarctic Mid-Infrared CAmera for the IRAIT telescope

2005 ◽  
Vol 14 ◽  
pp. 337-342 ◽  
Author(s):  
M. Dolci ◽  
G. Valentini ◽  
O. Straniero ◽  
G. Di Rico ◽  
M. Ragni ◽  
...  
Keyword(s):  
Infrared Camera ◽  
Mid Infrared ◽  
The Antarctic
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