Thallium selenide (TlSe) phase diagram, heat of formation, entropy

2005 ◽  
pp. 1-3
Author(s):  
Keyword(s):  
Phase Diagram ◽  
Heat Of Formation ◽  
Thallium Selenide

Thermodynamical Estimations on the Amount of Liquid Phase During Reaction Synthesis of Nickel-Aluminides

1994 ◽  
Vol 364 ◽  
Author(s):  
Seiji Miura ◽  
Yoshinao Mishima
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
Intermetallic Compounds ◽  
Binary Phase Diagram ◽  
Shape Change ◽  
Heat Of Formation ◽  
Nickel Aluminides ◽  
Reaction Synthesis ◽  
Estimation And Control ◽  
And Control

AbstractThe amounts of intermetallic compounds and liquid phase are estimated as a function of temperature during reaction syntheses for Ni–Al binary alloys having arbitrary compositions under adiabatic conditions. It is assumed that the phases that would present during the process are only those appearing in the equilibrium binary phase diagram. Calculations are done by using available data on heat of formation of intermetallic compounds and those on enthalpy of liquid phase. The results obtained arc discussed in view of the estimation and control of the amount of liquid phase, which is significant for the densification and shape change of materials.

Can Amortization Bs Induced by Ion Mixing in Ag-Cu and Ag-Ni Systems?

1985 ◽  
Vol 54 ◽  
Author(s):  
B. X. Liu ◽  
L. J. Huang ◽  
J. Li ◽  
S. Ma
Keyword(s):  
Phase Diagram ◽  
Amorphous Phase ◽  
Equilibrium Phase ◽  
Structural Difference ◽  
Liquid Nitrogen Temperature ◽  
Equilibrium Phase Diagram ◽  
Heat Of Formation ◽  
Phase Region ◽  
Two Phase ◽  
Amorphous Phase Formation

ABSTRACTThe extended Structural Difference Rule for amorphous phase formation states that an amorphous phase can be obtained by ion mixing with an alloy with a composition lying in a two-phase region in the equilibrium phase diagram. This criterion has to respond to the challenge that no amorphous alloy has been formed in some early studied systems exhibiting a two-phase region character, e.g. Ag-Cu(typical eutec-tic),Ag-Ni(almost entirely immiscible),etc‥We performed ion mixing experiments for several systems at liquid nitrogen temperature using Xe ions with low current density. Amorphization was indeed observed in both Ag-Cu and Ag-Ni samples, as two halos were seen by TEM SAD immediately after adequate doses ion mixing. These not only support our two-pnase region rule, but also show the possibility of amorphization in a system(Ag-Ni) that has large positive heat of formation.

Untersuchungen zum quasibinären System Bi2Te3/BiBr3 / Investigations on the Pseudobinary System Bi2Te3/BiBr3

1999 ◽  
Vol 54 (4) ◽  
pp. 487-490 ◽  
Author(s):  
U. Petasch ◽  
H. Oppermann
Keyword(s):  
Phase Diagram ◽  
Total Pressure ◽  
Ternary Phase ◽  
Heat Of Formation ◽  
Standard Entropy ◽  
Pressure Measurements ◽  
Pressure Data ◽  
Pseudobinary System ◽  
Vapor Pressure Data ◽  
X Ray

The phase diagram of the pseudobinary sytem Bi2Te3/BiBr3 was investigated by DTA, total pressure measurements and X-ray phase analysis. Only BiTeBr exists as a ternary phase in this system. The compound melts congruently at 526 °C. The heat of formation and standard entropy were calculated from vapor pressure data:ΔH(BiTeBr, f, 298) = (-30,4 ± 1,4) kcal/mol; S°(BiTeBr, f, 298) = (36,2 ± 2,9) cal/K·mol.

New developments in the ab initio determination of transition metal alloys phase diagram

1993 ◽  
Vol 90 ◽  
pp. 249-254 ◽  
Author(s):  
C Wolverton ◽  
M Asta ◽  
S Ouannasser ◽  
H Dreyssé ◽  
D de Fontaine
Keyword(s):  
Phase Diagram ◽  
Transition Metal ◽  
Ab Initio ◽  
Metal Alloys ◽  
New Developments ◽  
Transition Metal Alloys

Phase diagram calculation of Ti-Zr-X systems

1993 ◽  
Vol 90 ◽  
pp. 175-180 ◽  
Author(s):  
Li Lin ◽  
L Delaey ◽  
P Wollants ◽  
O Van Der Biest
Keyword(s):  
Phase Diagram ◽  
Phase Diagram Calculation
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