Experimental Verification of the Thermodynamics of Critical Aspects of the Carbothermic Reduction of Alumina. Part II: Thermogravimetric Study of the Reaction of Al2O3–C Mixtures and the Al2O3–Al4C3 Phase Diagram

2014 ◽  
Vol 45 (4) ◽  
pp. 1565-1572
Author(s):  
Matthew S. Walker ◽  
Richard J. Fruehan
Keyword(s):  
Phase Diagram ◽  
Experimental Verification ◽  
Carbothermic Reduction ◽  
Thermogravimetric Study ◽  
Critical Aspects

Thermodynamic modeling of binary phase diagram of 2-amino-2-methyl-1, 3-propanediol and TRIS(hydroxymethyl)aminomethane system with experimental verification

Calphad ◽  
2015 ◽  
Vol 50 ◽  
pp. 126-133 ◽  
Author(s):  
Prathyusha Mekala ◽  
Vamsi Kamisetty ◽  
Wen-Ming Chien ◽  
Renhai Shi ◽  
Dhanesh Chandra ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Modeling ◽  
Experimental Verification ◽  
Binary Phase Diagram ◽  
Binary Phase

Thermogravimetric study on carbothermic reduction of chromite ore under non-isothermal conditions

2014 ◽  
Vol 42 (6) ◽  
pp. 409-416 ◽  
Author(s):  
X. Hu ◽  
L. Sundqvist. Ökvist ◽  
Q. Yang ◽  
B. Björkman
Keyword(s):  
Carbothermic Reduction ◽  
Chromite Ore ◽  
Isothermal Conditions ◽  
Thermogravimetric Study

A thermogravimetric study of the phase diagram of strontium cobalt iron oxide, SrCo0.8Fe0.2O3 − δ

1996 ◽  
Vol 31 (1) ◽  
pp. 29-35 ◽  
Author(s):  
L.M. Liu ◽  
T.H. Lee ◽  
L. Qiu ◽  
Y.L. Yang ◽  
A.J. Jacobson
Keyword(s):  
Phase Diagram ◽  
Iron Oxide ◽  
Thermogravimetric Study ◽  
Cobalt Iron Oxide ◽  
Cobalt Iron ◽  
Strontium Cobalt Iron Oxide

Experimental Verification of Phase Diagram Calculations of Zr-Based Alloys after High-Temperature Oxidation

2020 ◽  
Vol 405 ◽  
pp. 351-356
Author(s):  
Petra Gávelová ◽  
Patricie Halodová ◽  
Ondřej Libera ◽  
Iveta Adéla Prokůpková ◽  
Věra Vrtílková ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Temperature ◽  
Oxygen Content ◽  
Experimental Verification ◽  
High Temperature Oxidation ◽  
Fission Products ◽  
Spent Fuel ◽  
Fuel Rods ◽  
Temperature Oxidation ◽  
Cladding Material

Zirconium-based alloys are commonly used as a material for nuclear fuel claddings in the light water reactors. The cladding material must function to fix a huge number of pellets, while conducting heat into the coolant that flows turbulently around the fuel rods. Cladding tubes can contain gaseous fission products that escape the fuel. Thus, by functioning as a sealed unit, it prevents a contamination of the coolant water with high-radioactive fission products. The integrity of claddings is always a critical issue during reactor operation and wet or dry storage and transport of the spent fuel rods. Moreover, the role gains importance at Loss of Coolant Accidents (LOCA). After Fukushima accident, cladding materials are widely studied with the purpose to reduce the high-temperature oxidation rate and enhance accident tolerance. In our contribution, we introduce the studies on Zr-1Nb (E110) cladding tubes after high-temperature steam oxidation at 1350 °C. During the testing of claddings, microscopy analytical methods play an important role in experimental verification of pseudo-binary phase diagram Zr1Nb-O, i. e. particularly in oxygen content determination at phase transitions. Wave Dispersive Spectroscopy (WDS) with complementary nano-indentation method were used to characterize the Zr1Nb microstructure formed after LOCA. It includes the regions from an oxide and oxygen-stabilized α-Zr(O) to the acicular prior β-Zr phase. The decrease of hardness and Young's modulus corresponds with oxygen content measured in line-profiles by WDS. The oxygen level at transition points was partly determined from Fe, Nb β-stabilizers and significant change in mechanical properties in fine-grained prior β-Zr. The slight fluctuation of oxygen values in adjacent grains can be caused by preferential oxidation through the favorably oriented α-Zr(O) grains studied by WDS+EBSD. As well, the non-uniform oxygen-rich α-Zr(O) phase adjacent to the oxide was characterized by EBSD & WDS. Increasing hydrogen content in specimens, 10, 700 and 1000 ppm H, caused increasing solubility of oxygen in prior β-Zr phase upon high-temperature and the cladding material hardening.

scholarly journals Phase diagram of ferroelastic systems in the presence of disorder: Analytical model and experimental verification

2012 ◽  
Vol 86 (18) ◽  
Author(s):  
R. Vasseur ◽  
D. Xue ◽  
Y. Zhou ◽  
W. Ettoumi ◽  
X. Ding ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Analytical Model ◽  
Experimental Verification

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
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