Phase evolution in the mechanochemical synthesis of stabilized nanocrystalline (ZrO2)0.97(Y2O3)0.03 solid solution by PAC technique

2013 ◽  
Vol 39 (5) ◽  
pp. 5577-5583 ◽  
Author(s):  
Nicolás M. Rendtorff ◽  
Gustavo Suárez ◽  
Esteban F. Aglietti ◽  
Patricia C. Rivas ◽  
Jorge A. Martinez
Keyword(s):  
Solid Solution ◽  
Mechanochemical Synthesis ◽  
Phase Evolution ◽  
Pac Technique

THERMODYNAMIC ANALYSIS OF PHASE FORMATION IN MECHANICAL ALLOYED Fe3Al POWDER

2011 ◽  
Vol 18 (03n04) ◽  
pp. 115-120
Author(s):  
L. X. PANG ◽  
X. H. HAO ◽  
N. F. HAN ◽  
J. XU ◽  
X. D. TANG ◽  
...  
Keyword(s):  
Solid Solution ◽  
Driving Force ◽  
Lattice Strain ◽  
Driving Forces ◽  
Phase Evolution ◽  
Mechanically Alloyed ◽  
Energy Of Mixing ◽  
Supersaturated Solid Solutions ◽  
Free Energy Of Mixing ◽  
Aluminum Phase

Nanocrystalline supersaturated solid solutions were formed by mechanically alloyed Fe-28Al (in atom percent) from the elemental powder of iron and aluminum. Phase evolution, grain size and lattice strain of these powders were determined and discussed. A thermodynamic model was developed based on semi-experimental theory of Miedema to calculate the chemical driving force for phase evolution. The influence of thermodynamic driving forces, namely the Gibbs free energy of mixing, for the solid solution and the amorphous was discussed and corresponded to the sequence of phase formations during mechanical alloying.

Phase evolution in SrTiO3-PbZrO3 solid solution

2007 ◽  
Vol 101 (8) ◽  
pp. 084117 ◽  
Author(s):  
E. P. Smirnova ◽  
A. V. Sotnikov ◽  
O. E. Kvyatkovskii ◽  
M. Weihnacht ◽  
V. V. Lemanov
Keyword(s):  
Solid Solution ◽  
Phase Evolution

Mechanochemical synthesis and shock wave consolidation of TiN(Al) nanostructure solid solution

2014 ◽  
Vol 145 (3) ◽  
pp. 366-375 ◽  
Author(s):  
H. Amini Mashhadi ◽  
I. Bataev ◽  
B. Mohammad Sadeghi ◽  
K. Hokamoto
Keyword(s):  
Shock Wave ◽  
Solid Solution ◽  
Mechanochemical Synthesis

scholarly journals Microstructural Evolution, Thermodynamics and Kinetics of Mo-Tm2O3 Powder Mixtures during Ball Milling

2016 ◽  
Author(s):  
Yong Luo ◽  
Guang Ran ◽  
Nanjun Chen ◽  
Qiang Shen ◽  
Yaoli Zhang
Keyword(s):  
Solid Solution ◽  
Ball Milling ◽  
Microstructural Evolution ◽  
Driving Force ◽  
Phase Evolution ◽  
Heat Of Mixing ◽  
Powder Mixtures ◽  
Thermodynamics And Kinetics ◽  
Transmission Electron ◽  
Kinetics Of

The microstructural evolution, thermodynamics and kinetics of Mo-21%Tm2O3 (mass fraction, %) powder mixtures during ball milling were investigated using X-ray diffraction and transmission electron microscopy. Ball milling induced Tm2O3 to be decomposed and then dissolved into Mo crystal. The supersaturated nanocrystalline solid solution of Mo (Tm, O) was obtained after 96 h of ball milling. The elements of Mo, Tm and O were distributed uniformly in the ball-milled particles. Based on the semi-experimental theory of Miedema, a thermodynamic model was developed to calculate the driving force of phase evolution. There was no chemical driving force to form a crystal solid solution of Tm atoms in Mo crystal or an amorphous phase because the Gibbs free energy for both processes was higher than zero. For Mo-21%Tm2O3, it was mechanical work, not negative heat of mixing, that provided the driving force to form supersaturated nanocrystalline Mo (Tm, O) solid solution.

scholarly journals Cubic Rocksalt Li2SnS3 and a Solid Solution with Li3NbS4 Prepared by Mechanochemical Synthesis

2017 ◽  
Vol 85 (9) ◽  
pp. 580-584 ◽  
Author(s):  
Atsushi SAKUDA ◽  
Kentaro KURATANI ◽  
Tomonari TAKEUCHI ◽  
Hisao KIUCHI ◽  
Tomoya KAWAGUCHI ◽  
...  
Keyword(s):  
Solid Solution ◽  
Mechanochemical Synthesis

Synthesis of Aluminum Titanate Solid Solution by Solid State Reaction of Fine Commercial Al2O3, TiO2 and MgO Powders

2007 ◽  
Vol 336-338 ◽  
pp. 1327-1330 ◽  
Author(s):  
Gang Xu ◽  
Con Jiang Tu ◽  
Wen Jian Weng ◽  
Pi Yi Du ◽  
Ge Shen ◽  
...  
Keyword(s):  
Solid Solution ◽  
Solid State ◽  
Solid State Reaction ◽  
Raw Materials ◽  
Phase Evolution ◽  
Solid State Reaction Method ◽  
Synthesis Temperature ◽  
Aluminum Titanate ◽  
Reaction Method ◽  
Α Al2o3

The synthesis of aluminum titanate solid solution (Al2(1-x)MgxTi1+xO5, x=0, 0.1, 0.2) powders was realized by solid state reaction method using fine commercial α-Al2O3, TiO2 and MgO powders as raw materials. The effect of the introduced amount of MgO on the phase formation of aluminum titanate solid solution was investigated by XRD following the phase evolution. It was revealed that the introduction of MgO strongly affects the formation of Al2(1-x)MgxTi(1+x)O5 solid solution. The easily formed MgTi2O5 acts as the nucleus prompting the formation and lowering the synthesis temperature. The microstructure and properties of the solid solution ceramics were also studied by SEM and measuring the fracture strength and the thermal expansion coefficient.

Mechanochemical Synthesis of Methylammonium Lead Mixed–Halide Perovskites: Unraveling the Solid-Solution Behavior Using Solid-State NMR

2018 ◽  
Vol 30 (7) ◽  
pp. 2309-2321 ◽  
Author(s):  
Abhoy Karmakar ◽  
Abdelrahman M. Askar ◽  
Guy M. Bernard ◽  
Victor V. Terskikh ◽  
Michelle Ha ◽  
...  
Keyword(s):  
Solid Solution ◽  
Solid State ◽  
Mechanochemical Synthesis ◽  
Solid State Nmr ◽  
Solution Behavior ◽  
Halide Perovskites

scholarly journals Microstructural and Magnetic Behavior of Nanocrystalline Fe-12Ni-16B-2Si Alloy Synthesis and Characterization

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1679
Author(s):  
Kaouther Zaara ◽  
Mohamed Khitouni ◽  
Lluisa Escoda ◽  
Joan Saurina ◽  
Joan-Josep Suñol ◽  
...  
Keyword(s):  
Solid Solution ◽  
Magnetic Properties ◽  
Saturation Magnetization ◽  
Milling Time ◽  
Milled Powder ◽  
Magnetic Behavior ◽  
Phase Evolution ◽  
High Energy ◽  
Refined Microstructure ◽  
Hard Magnetic Properties

The nanocrystalline Fe70Ni12B16Si2 (at.%) alloy was prepared by mechanical alloying (MA) of elemental powders in a high-energy planetary ball mill. Phase evolution, microstructure, thermal behavior and magnetic properties were investigated. It was found that a body-centered cubic structured solid solution started to form after 25 h milling and a faced-centered cubic structure solid solution started to form after 50 h of milling; its amount increased gradually with increasing milling time. The BCC and the FCC phases coexisted after 150 h of milling, with a refined microstructure of 13 nm and a 10 nm crystallite size. The as-milled powder was annealed at 450 °C and 650 °C and then investigated by vibrating sample magnetometry (VSM). It was shown that the semi-hard magnetic properties are affected by the phase transformation on annealing. The saturation magnetization decreases after annealing at 450 °C, whereas annealing at 650 °C improves the magnetic properties of 150 h milled powders through the reduction of coercivity from 109 Oe to 70 Oe and the increase in saturation magnetization.

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