scholarly journals Experimental Investigation of the Phase Relations in the Fe-Zr-Y Ternary System

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 593
Author(s):  
Chenbo Li ◽  
Qian Song ◽  
Xianwen Yang ◽  
Yuduo Wei ◽  
Qi Hu ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Ternary System ◽  
Solid Solubility ◽  
Intermetallic Phases ◽  
Phase Relations ◽  
The Other ◽  
Ternary Compounds ◽  
The Third

The phase relations of the Fe-Zr-Y system at 973 K and 1073 K were experimentally investigated by using the equilibrated alloys. New ternary compounds τ3-Fe3ZrY and τ4-Fe10Zr5Y2 were found in this ternary system. The solubility of Y in Fe2Zr was measured to be 3.5 at.% and the third component can hardly dissolve in the other binary intermetallic phases. Experiments have verified that Fe2.9Zr0.5Y0.5 has a solid solubility ranging from Fe73Zr12Y14 to Fe77Zr9Y13.

Phase equilibria of the Cu–Dy–Ti ternary system at 973 K

2015 ◽  
Vol 30 (3) ◽  
pp. 218-223
Author(s):  
Yanfang Pan ◽  
Hao Liu ◽  
Wenchao Yang ◽  
Bo Zhang ◽  
Hongqun Tang ◽  
...  
Keyword(s):  
Solid State ◽  
Ternary System ◽  
Phase Equilibria ◽  
Homogeneity Range ◽  
Solid Solubility ◽  
Ternary Phase ◽  
Single Phase ◽  
Phase Relations ◽  
The Other ◽  
Binary Compounds

The solid-state phase equilibria of the copper (Cu)–dysprosium (Dy)–titanium (Ti) ternary system at 973 K has been experimentally investigated. The existence of nine binary compounds, Cu4Ti, Cu3Ti2, Cu4Ti3, CuTi, CuTi2, CuTi3, CuDy, Cu2Dy, and Cu5Dy was confirmed. The controversial phase of CuTi3 was found in this work. The temperature range of Cu7Dy was determined to be from 1112 to 1183 K. The phase relations at 973 K are governed by ten ternary phase regions, 21 binary phase regions, and 12 single-phase regions. The solid solubility of Cu in Dy is undetectable. None of the other phase in this system reveals a remarkable homogeneity range at 973 K.

Untersuchungen zum ternären System Bi/Te/O, III. Bestimmung thermodynamischer Daten der ternären Verbindungen/Investigations on the Ternary System Bi/Te/O,III. Determination of Thermodynamic Data of Ternary Compounds

1999 ◽  
Vol 54 (2) ◽  
pp. 252-260 ◽  
Author(s):  
P. Schmidt ◽  
C. Hennig ◽  
H. Oppermann
Keyword(s):  
Solid State ◽  
Ternary System ◽  
Thermodynamic Data ◽  
Phase Relations ◽  
Solid State Reactions ◽  
Enthalpies Of Formation ◽  
Ternary Compounds ◽  
Heats Of Solution

The phase relations in the ternary system Bi/Te/O have been determined in previous studies by solid state reactions. Thermodynamical data have now been obtained for the pertinent equilibria. The heats of solution of Bi2O3, Bi12TeO20, Bi10Te2O19, Bi16Te5O34, Bi2TeO5, Bi2Te2O7, Bi2Te4O11 and TeCl4 were determined in 4N HCl. From these the enthalpies of formation of bismuth tellurites at 298 K have been derived:⊿H°b (Bi12TeO20, f, 298) = -901,6 ± 8 kcal/mol,⊿H°b (Bi10Te2O19, f, 298) = -856,1 ± 9 kcal/mol,⊿H°b (Bi16Te5O34, f, 298) = -1519,5 ± 17 kcal/mol,⊿H°b (Bi2TeO5, f, 298)= -222,8 ± 3 kcal/mol,⊿H°b (Bi2Te2O7, f, 298)= -299,4 ± 4 kcal/mol,⊿H°b (Bi2Te4O11, f, 298)= -448,2 ± 7 kcal/mol.

Experimental investigation of phase relations in Al-Co-Y ternary system

Calphad ◽  
2017 ◽  
Vol 56 ◽  
pp. 1-9 ◽  
Author(s):  
Yurong Jiang ◽  
Xian Li ◽  
Yun Jiang ◽  
Shuaixiong Huang ◽  
Xi Shi ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Ternary System ◽  
Phase Relations

Experimental Investigation of the Effect of Materials and Their Surface Colours on Nocturnal Cooling

2013 ◽  
Author(s):  
Nnamdi V. Ogueke ◽  
Kevin N. Nwaigwe ◽  
Chidiebere Nwaiwu ◽  
Emmanuel E. Anyanwu
Keyword(s):  
Experimental Investigation ◽  
Relative Humidity ◽  
Temperature Difference ◽  
The Other ◽  
Galvanized Steel ◽  
Ambient Temperatures ◽  
Clear Night ◽  
The Third ◽  
Night Sky

The experimental investigation of the effects of materials and their surface colours on nocturnal cooling is presented. Two materials, galvanized steel and aluminium, were considered. Three plates of each material were used. One was painted black, the other white, while the third was left unpainted. Each of the plates (0.5 × 0.5 m) was used to cover a wooden box of dimension 0.5 × 0.5 × 0.24 m, made of 0.02 m thick plywood, thus producing an air tight arrangement. Six of such boxes were formed in all; three from galvanized steel and three from aluminium. Ambient temperatures, temperatures of the air inside the box and on the outside surface of the plates were measured between 19:00 hours and 06:00 hours for 6 months. Also measured was the relative humidity. Results obtained reveal that the plates’ performances greatly depended on how clear the night was. For very clear night, the black painted aluminium gave the best result, maintaining a temperature difference of 3–8°C with the ambient. For a partly overcast night, the best result of 1–5°C difference between the inside air and the ambient was recorded by the unpainted galvanized steel while on heavily overcast night the best performance came from the unpainted aluminium with a temperature difference of 1–4°C. Thus unpainted galvanized steel and aluminium are considered best in region where the night sky is hardly clear.

Experimental investigation of the phase relations in the SiO2-Dy2O3-CaO ternary system

2020 ◽  
Vol 46 (15) ◽  
pp. 23534-23543
Author(s):  
Fei Wang ◽  
Wenke Zhi ◽  
Annelies Malfliet ◽  
Bart Blanpain ◽  
Muxing Guo
Keyword(s):  
Experimental Investigation ◽  
Ternary System ◽  
Phase Relations

Solid State Electrochemical Study of Phase Equilibria and Thermodynamics of the Ternary System Y-Fe-O at Elevated Temperatures

1979 ◽  
Vol 34 (4) ◽  
pp. 430-436 ◽  
Author(s):  
W. Piekarczyk ◽  
W. Weppner ◽  
A. Rabenau
Keyword(s):  
Phase Diagram ◽  
Solid State ◽  
Ternary System ◽  
Phase Equilibria ◽  
Elevated Temperatures ◽  
Free Energies ◽  
Ternary Compounds ◽  
Temperature Range ◽  
The Third ◽  
Galvanic Cell Technique

A solid state galvanic cell technique has been employed to determine the phase diagram of the ternary system Y-Fe-O in the temperature range from 900 to 1250 °C. Only electrical quantities need to be measured and the samples do not have to be quenched. YFeO3 and Y3Fe5O12 exist over the entire temperature range, whereas the third ternary compound YFe2O4-x is only thermodynamically stable above 1010 ± 9 °C. Above 1078 ± 15 °C YFe2O4-x comes into equilibrium with Y2O3.With the same experimental arrangement the standard Gibbs free energies of formation ⊿G f0 of the ternary compounds YFeO3, Y3Fe5O12 and YFe2O4 have been determined to be -1366.0 + 0.2525 X T kJ/mol (1173 ≦ T [K] ≦ 1523), - 4912.2 +0.9990 X T kJ/mol (1173≦T[K] ≦ 1523) and -1615.9 + 0.3068 x T kJ/mol (1283≦T[K] ≦ 1523) as functions of the temperature, respectively

scholarly journals Thermodynamic Modeling of the Al–Co–Pd Ternary System, Aluminum Rich Corner

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1803
Author(s):  
Viera Homolová ◽  
Aleš Kroupa
Keyword(s):  
Complex System ◽  
Ternary System ◽  
Thermodynamic Parameters ◽  
Thermodynamic Modeling ◽  
Intermetallic Phases ◽  
Calphad Method ◽  
Experimental Results ◽  
The Third ◽  
Good Agreement

The aluminum-rich corner of the Al–Co–Pd ternary system was thermodynamically modeled by the CALPHAD method in the present study. The ternary system is a complex system with many ternary phases (W, V, F, U, Y2, C2). All ternary phases, except phase U, were modeled as stoichiometric compounds. The order–disorder model was used to describe the BCC–B2 and BCC-A2 phases. Solubility of the third element in binary intermetallic phases (Al5Co2, Al3Co, Al9Co2, Al13Co4, Al3Pd and Al3Pd2) was modeled. The experimental results collected from the literature were used in the optimization of the thermodynamic parameters. A good agreement between the experimental results and the calculations was achieved.

Efficacy of some insecticide modules against major insect pests and spider population of rice, Oryza sativa L.

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 257-262
Author(s):  
Atanu Seni ◽  
Bhimasen Naik
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Untreated Control ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Gall Midge ◽  
Stem Borer ◽  
The Other ◽  
The Third ◽  
Treated Plot

Experiments were carried out to assess some insecticide modules against major insect pests of rice. Each module consists of a basal application of carbofuran 3G @ 1 kg a.i ha-1 at 20 DAT and Rynaxypyr 20 SC @ 30 g a.i ha-1 at 45 DAT except untreated control. All modules differ with each other only in third treatment which was applied in 65 DAT. The third treatment includes: Imidacloprid 17.8 SL @ 27 g a.i ha-1, Pymetrozine 50 WG @ 150 g a.i ha-1, Triflumezopyrim 106 SC @ 27 g a.i ha-1, Buprofezin 25 SC @ 250 g a.i ha-1; Glamore (Imidacloprid 40+Ethiprole 40% w/w) 80 WG @ 100 g a.i. ha-1, Thiacloprid 24 SC @ 60 g a.i ha-1, Azadirachtin 0.03 EC @ 8 g a.i ha-1, Dinotefuran 20 SG@ 40 g a.i ha-1 and untreated control. All the treated plots recorded significantly lower percent of dead heart, white ear- head caused by stem borer and silver shoot caused by gall midge. Module with Pymetrozine 50 WG @ 150 g a.i ha-1 treated plot recorded significantly higher per cent reduction of plant hoppers (>80% over untreated control) and produced higher grain yield (50.75 qha-1) than the other modules. Among the different treated modules the maximum number of spiders was found in Azadirachtin 0.03 EC @ 8 g a.i ha-1 treated module plot followed by other treatments.

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