scholarly journals Solubility of Nitrogen in Austenitic Iron under High Pressure of Nitrogen Gas and Thermodynamical Properties of Austenitic Interstitial Solid Solution of the Fe-N System

1970 ◽  
Vol 34 (2) ◽  
pp. 195-201 ◽  
Author(s):  
Tsuyoshi Masumoto ◽  
Masaaki Naka ◽  
Yûnoshin Imai
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Interstitial Solid Solution ◽  
Nitrogen Gas ◽  
Thermodynamical Properties

Solid Solution (AlN) x (SiC)1–x (x ≈ 0.7) by SHS under High Pressure of Nitrogen Gas

2018 ◽  
Vol 27 (1) ◽  
pp. 33-36 ◽  
Author(s):  
I. P. Borovinskaya ◽  
T. G. Akopdzhanyan ◽  
E. A. Chemagina ◽  
N. V. Sachkova
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Nitrogen Gas

scholarly journals The Enrichment of (Cu, Sn) Solid Solution Driven by High-Pressure Torsion

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 766
Author(s):  
Boris Straumal ◽  
Askar Kilmametov ◽  
Anna Korneva ◽  
Pawel Zięba ◽  
Yuri Zavorotnev ◽  
...  
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Theoretical Analysis ◽  
Annealing Temperature ◽  
High Pressure Torsion

Cu–14 wt% Sn alloy was annealed at temperatures of 320 and 500 °C. The concentration of tin cinit in the copper-based matrix increased with annealing temperature. The annealed samples were subjected to high-pressure torsion (HPT) at 6 GPa, 5 turns, 1 rpa. HPT led to the refinement of Cu grains. The shape of the colonies of α + ε phases changed only slightly. The HPT-driven enrichment of the Cu-based solid solution with Sn atoms cHPT–cinit decreased with increasing cinit. The performed theoretical analysis explained this behavior of the HPT-driven enrichment.

The enrichment of solid solution in a two-phase alloy during the high pressure torsion

2021 ◽  
pp. 130386
Author(s):  
Anna Korneva ◽  
Askar Kilmametov ◽  
Yuri Zavorotnev ◽  
Leonid Metlov ◽  
Olga Popova ◽  
...  
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Two Phase

scholarly journals Role of temperature in the numerical analysis of CaO under high pressure

2010 ◽  
Vol 8 (1) ◽  
pp. 126-133 ◽  
Author(s):  
Purvee Bhardwaj ◽  
Sadhna Singh
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Numerical Analysis ◽  
Thermodynamic Properties ◽  
Elastic Constants ◽  
Volume Change ◽  
Thermodynamical Properties ◽  
Phase Transition Pressure ◽  
Different Temperatures

AbstractIn this paper we focus on the elastic and thermodynamic properties of the B1 phase of CaO by using the modified TBP model, including the role of temperature. We have successfully obtained the phase transition pressure and volume change at different temperatures. In addition elastic constants and bulk modulus of B1 phase of CaO at different temperatures are discussed. Our results are comparable with the previous ones at high temperatures and pressures. The thermodynamical properties of the B1 phase of CaO are also predicted.

Picosecond acoustics method for measuring the thermodynamical properties of solids and liquids at high pressure and high temperature

Ultrasonics ◽  
2015 ◽  
Vol 56 ◽  
pp. 129-140 ◽  
Author(s):  
F. Decremps ◽  
M. Gauthier ◽  
S. Ayrinhac ◽  
L. Bove ◽  
L. Belliard ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Thermodynamical Properties

scholarly journals Ge0.57Ti0.43O2: a new high-pressure material with rutile-type crystal structure

2018 ◽  
Vol 74 (7) ◽  
pp. 1010-1012 ◽  
Author(s):  
Emil Stoyanov ◽  
Kurt Leinenweber ◽  
Thomas L. Groy ◽  
Abds-Sami Malik
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
High Pressure ◽  
Single Crystals ◽  
Structure Type ◽  
Site Symmetry ◽  
Rutile Structure ◽  
High Pressure And Temperature ◽  
Atom Position ◽  
Type Crystal

Single crystals of a GeO2–TiO2 solid solution with the corresponding composition Ge0.57Ti0.43O2 (germanium titanium tetraoxide) were obtained by devitrification of germania-titania glass at high pressure and temperature. The new compound crystallizes in the rutile structure type (space group P42/mnm), where Ge and Ti share the same position M (site symmetry m.mm), with occupancy values of 0.57 (3) and 0.43 (3), respectively, and one O-atom position (m.2m). The M site is in a sixfold O-atom coordination and, as in the original TiO2 rutile structure, an elongation of the O—M—O bonds along the c-axis direction of the coordination polyhedron and deviation of the angles from 90° lead to a decrease in the coordination symmetry from octahedral to tetragonal. The Ge and Ti atoms are fully disordered in the structure, which indicates that the rutile structure is surprisingly pliant given the differing sizes of the two cations.

scholarly journals Synthesis of New Mono-Carbonitride(W,Mo)(C,N) Powder by Heating W-Mo Alloy+C Mixed Powder in High-Pressure Nitrogen Gas.

2002 ◽  
Vol 49 (4) ◽  
pp. 270-278
Author(s):  
Nobuaki Asada ◽  
Yoshiharu Yamamoto ◽  
Tadashi Igarashi ◽  
Yoshihiko Doi ◽  
Koji Hayashi
Keyword(s):  
High Pressure ◽  
Nitrogen Gas ◽  
Mixed Powder ◽  
N Powder

Low-Temperature Properties of High-Pressure Quenched f.c.c. Al-Si Solid Solution

1989 ◽  
Vol 8 (2) ◽  
pp. 173-178 ◽  
Author(s):  
J Chevrier ◽  
J. C Lasjaunias ◽  
F Zougmore ◽  
J. J Capponi
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Low Temperature

MICROSTRUCTURE AND MAGNETIC PROPERTIES OF Sm2Fe17NNx−ALLOY- POWDERS AND OF BONDED ANISOTROPIC MAGNETS

1993 ◽  
Vol 07 (01n03) ◽  
pp. 716-720
Author(s):  
B. WALL ◽  
M. KATTER ◽  
W. RODEWALD ◽  
M. VELICESCU
Keyword(s):  
Solid Solution ◽  
Particle Size ◽  
Magnetic Properties ◽  
Average Particle Size ◽  
Average Particle ◽  
Interstitial Solid Solution ◽  
Demagnetization Curve ◽  
Microstructure And Magnetic Properties

In cast Sm2Fe17 ingots minor fractions of SmFe2 and SmFe3 may occur. Nitrogenation of such alloy-powders inidicates that only Sm2Fe17 forms an interstitial solid solution whereas SmFe2 and SmFe3 decompose directly into SmN and α-Fe. From Sm2Fe17Nx alloy powders with an average particle size of about 3 μm anisotropic magnets were prepared by adding 15 wt% Zn-powder. Annealing at 390 ºC results in intrinsic coercivities > 15 kOe promoted by the formation of an unknown binary Fe8Zn92-compound. Whereas annealing at temperatures > 420 ºC leads to the formation of binary Fe3Zn7 and ternary Sm2FeZn2. By the formation of Sm2FeZn2 from Sm2Fe17Nx+Zn some α-Fe occurs inducing a step in the demagnetization curve J(H).

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