The Crystal-T algorithm: a new approach to calculate the SLE of lipidic mixtures presenting solid solutions

2014 ◽  
Vol 16 (31) ◽  
pp. 16740-16754 ◽  
Author(s):  
Guilherme J. Maximo ◽  
Mariana C. Costa ◽  
Antonio J. A. Meirelles
Keyword(s):  
Phase Diagrams ◽  
Solid Solutions ◽  
Solid Phase ◽  
New Approach

The Crystal-T algorithm accurately depicts the SLE phase diagrams of lipidic mixtures presenting solid solutions, measured in this work, by liquid and solid phase γ models.

Thermodynamic analysis of phase diagrams of binary solid solutions of ascending and minimum types: Na2SO4–Ag2SO4, Ag2SO4–K2SO4, Na2SO4–K2SO4

1989 ◽  
Vol 67 (9) ◽  
pp. 1468-1471
Author(s):  
Patrick C. Dawson ◽  
E. A. Secco ◽  
William M. Oxner
Keyword(s):  
Binary System ◽  
Phase Diagrams ◽  
Thermodynamic Analysis ◽  
Solid Solutions ◽  
Condensed Phase ◽  
Solid Phase ◽  
Ionic Melts

The thermodynamic analysis of the condensed phase diagrams of binary system solid solutions of the ascending type, viz. Na2SO4–Ag2SO4 and of the minimum type, ameltrope, viz. Ag2SO4–K2SO4, Na2SO4–K2SO4 is presented. The analysis identifies the basis for ameltrope behavior and provides for the evaluation of α, the fraction of dissociation, and ΔHDiss, the enthalpy of dissociation, of the dissociating component. Keywords: alkali sulfates solid solutions, thermodynamic analysis ameltropes, molten alkali sulfates dissociation, solid–solid phase diagrams, ionic melts.

Thermodynamical study of (CaGa2S4)x(BaGa2S4)1−x solid solutions

2021 ◽  
pp. 2150469
Author(s):  
T. G. Naghiyev ◽  
R. M. Rzayev
Keyword(s):  
Free Energy ◽  
Solid Solutions ◽  
Calculation Method ◽  
Solid Phase ◽  
Ternary Compounds ◽  
Free Energy Of Formation ◽  
Concentration Dependences ◽  
Solid Phase Reactions ◽  
Two Phases ◽  
Energy Of Formation

The solid solutions of [Formula: see text] were synthesized by solid-phase reactions from powder components of CaS, BaS, and Ga2S3. The temperature-concentration dependences of the Gibbs free energy of formation of [Formula: see text] solid solutions from ternary compounds and phase diagrams of the CaGa2S4–BaGa2S4 were determined by a calculation method. It was revealed that continuous solid solutions are formed in these systems. The spinodal decomposition of [Formula: see text] solid solutions into two phases is predicted at ordinary temperatures.

InGaAsP Solid Solutions: Phase Diagrams, Growth from the Melt on GaAs Substrates, Elastically Strained Epitaxial Layers

2002 ◽  
pp. 67-79
Author(s):  
Yu. B. Bolkhovityanov ◽  
A. S. Yaroshevich ◽  
M. A. Revenko ◽  
E. M. Trukhanov
Keyword(s):  
Phase Diagrams ◽  
Solid Solutions ◽  
Epitaxial Layers ◽  
Gaas Substrates

scholarly journals Solid phase synthesis of calcium stearate on a modified screw equipment

2019 ◽  
Vol 58 (4) ◽  
pp. 127-132
Author(s):  
Alexander A. Momziakov ◽  
◽  
Timur R. Deberdeev ◽  
Rustam Ya. Deberdeev ◽  
Eugeny A. Pecheny ◽  
...  
Keyword(s):  
Solid Phase ◽  
Metal Salt ◽  
Mechanical Energy ◽  
Mechanical Action ◽  
Calcium Stearate ◽  
Chemical Additives ◽  
Metal Carboxylates ◽  
New Approach ◽  
Solution Methods ◽  
Full Factorial

Metal stearates are widely used in various industries: as a thickener, lubricants, auxiliary desiccant, emulsifier for cosmetics, chemical additives to synthetic rubbers and a stabilizing component in polyolefins (PE, PP), ABS plastic, polystyrene, polyamide and polyvinyl chloride ( PVC). The greatest interest in using the metal salt of stearic acid is stabilization of PVC. At present, technologies for the synthesis of divalent metal carboxylates have evolved in three directions: synthesis technology in solution, in the melt and in the solid phase. The latter was the most laborious at the end of the last century due to the lack of equipment that allowed the imposition of mechanical energy on the material in sufficient quantity to initiate chemical transformation. In the literature, experiments are carried out on planetary mills, attritors, rollers and Bridgman anvils. In devices of a similar design, the best conditions for the chemical process between the components of the reaction mixture are created. The chemical reaction proceeds as a result of the creation and subsequent relaxation of the stress field when applying a mechanical action to the reaction mixture. However, they did not give a high selectivity for the target product; therefore, the chemical industry of stabilizing additives focused on solution methods for producing metal carboxylates. The authors of the article have developed a new approach for the synthesis of calcium stearate in the solid phase on a modified screw apparatus. Screw machines, in turn, provide an increase in the number of contacts between reagents and, more significantly, the area of the contact interface. In addition, heat generation due to friction in the contact area can further intensify the process. The influence of the temperature range inside the material cylinder - the reactor, the screw rotation speed on the technical characteristics and the yield of calcium stearate was investigated. Mathematical processing of the results of the full factorial experiment was carried out. A comparison of the adequacy of the obtained linear equation and experimental data is carried out.

scholarly journals Политермический разрез SnAs–P тройной системы Sn–As–P

2019 ◽  
Vol 21 (2) ◽  
pp. 287-295
Author(s):  
Tatiana P. Sushkova ◽  
Aleksandra V. Sheveljuhina ◽  
Galina V. Semenova ◽  
Elena Yu. Proskurina
Keyword(s):  
Phase Diagrams ◽  
Solid Solutions ◽  
Condensed Matter ◽  
High Energy ◽  
Potassium Ion ◽  
Dew Point ◽  
Sodium Ion ◽  
P System ◽  
Sodium Ion Batteries ◽  
Tin Phosphide

Проведено исследование фазовых равновесий в тройной системе Sn–As–P в области высокой концентрации летучих компонентов. Методами рентгенофазового и дифференциального термического анализа изучены сплавы политермического разреза SnAs–P. Показано, что растворимость фосфора в моноарсениде олова в направлении этого разреза менее 0.05 мол.д. фосфора. Построена Т-х диаграмма политермического сечения SnAs–Р. Наличие на Т-х диаграмме горизонтали при температуре 827±2 К соответствует реализации в системе Sn–As–P нонвариантного перитектического равновесия L + (d) ↔ b + g , где (d), b и g – трехкомпонентные твердые растворы на основе As1-xPx, SnAs и SnP3 соответственно     REFERENCES Zhang W., Mao J., Li S., Chen Z., Guo Z. Phosphorus-Based Alloy Materials for Advanced Potassium-Ion Battery Anode // Am. Chem. Soc., 2017, v. 139(9), pp. 3316–3319. https://doi.org/10.1021/jacs.6b12185 Liu S., Zhang H., Xu L., Ma L., Chen X. Solvothermal preparation of tin phosphide as a long-life anode for advanced lithium and sodium ion batteries // of Power Sources, 2016, v. 304, pp. 346–353. https://doi.org/10.1016/j.jpowsour.2015.11.056 Zhang W., Pang W., Sencadas V., Guo Z. Understanding High-Energy-Density Sn4P3 Anodes for Potassium-Ion Batteries // Joule, 2018, v. 2(8), pp. 1534–1547. https://doi.org/10.1016/j.joule.2018.04022 Lan D., Wang W., Shi L., Huang Y., Hu L., Li Q. Phase pure Sn4P3 nanotops by solution-liquid-solid growth for anode application in sodium ion batteries // Mater. Chem. A, 2017, v. 5, pp. 5791–5796. https://doi.org/10.1039/C6TA10685D Mogensen R., Maibach J., Naylor A. J., Younesi R. Capacity fading mechanism of tin phosphide anodes in sodium-ion batteries // Dalton Trans., 2018, v. 47, pp. 10752–10758. https://doi.org/10.1039/c8dt01068d Kamali A. R., Fray D. J. Tin-based materials as advanced anode materials for lithium ion batteries: a review // Adv. Mater. Sci., 2011, v. 27, pp. 14–24. URL: http://194.226.210.10/e-journals/RAMS/no12711/kamali.pdf Kovnir K. A., Kolen’ko Y. V., Baranov A. I., Neira I. S., Sobolev A. V., Yoshimura M., Presniakov I. A., Shevelkov A. V. Sn4As3 revisited: Solvothermal synthesis and crystal and electronic structure // Journal of Solid State Chemistry, 2009, v. 182(5), pp. 630–639. https://doi.org/10.1016/j.jssc.2008.12.007 Semenova G. V., Kononova E. Yu., Sushkova T. P. Polythermal section Sn4P3 – Sn4As3 // Russian J. of Inorganic Chemistry, 2013, v. 58 (9), pp. 1242–1245. https://doi.org/10.7868/S0044457X13090201 Sushkova T. P, Semenova G. V., Naumov A. V., Proskurina E. Yu. Solid solutions in the system Sn-As-P // Bulletin of VSU. Series: Chemistry. Biology. Pharmacy, 2017, v. 3, pp. 30–36. URL: http://www. vestnik.vsu.ru/pdf/chembio/2017/03/2017-03-05.pdf Semenova G. V., Sushkova T. P, Tarasova L. A., Proskurina E. Yu. Phase equilibria in a Sn-As-P system with a tin concentration less than 50 mol. % // Condensed Matter and Interphases, 2017, v. 19(3), pp. 408–416. https://doi.org/10.17308/kcmf.2017.19/218 Semenova G. V., Sushkova T. P., Zinchenko E. N., Yakunin S. V. Solubility of phosphorus in tin monoarsenide // Condensed Matter and Interphases, 2018, v. 20(4), pp. 644-649. https://doi.org/10.17308/kcmf.2018.20/639 Semenova G. V., Goncharov E. G. Solid Solutions Involving Elements of the Fifth Group. – Мoscow, MFTI Publ., 2000, 160 p. (in Russ.) Okamoto H. Phase diagrams for binary alloys, Second Edition. Materials Park, OH.: ASM International, 2010, 810 р. URL: https://www.asminternational. org/...pdf/c36eeb4e-d6ec-4804-b319-e5b0600ea65d Shirotani , Shiba S., Takemura K., Shimomura О., Yagi Т. Pressure-induced phase transitions of phosphorus-arsenic alloys // Physica B: Condensed Matter, 1993, v. 190, pp. 169–176.  https://doi.org/10.1016/0921-4526(93)90462-F Arita M., Kamo K. Measurement of vapor pressure of phosphorus over Sn-P alloys by dew point method // Jpn. Inst. Met., 1985, v. 26(4), pp. 242–250. https://doi.org/10.2320/matertrans1960.26.242 Zavrazhnov A. Yu., Semenova G. V., Proskurina E. Yu., Sushkova T. P. Phase diagram of the Sn–P system // Thermal Analysis and Calorimetry, 2018, v. 134(1), pp. 475–481. https://doi.orgh/10.1007/s10973-018-7123-0 Gokcen N. A. The As-Sn (Arsenic-Tin) system // Bulletin of alloy phase diagrams, 1990, v. 11(3), pp. 271–278. https://doi.org/10.1007/BF03029298

scholarly journals Microstructure features of the BST/(Mg, Ln)-ceramic

2021 ◽  
pp. 2160005
Author(s):  
K. P. Andryushin ◽  
A. V. Nagaenko ◽  
S. V. Khasbulatov ◽  
L. A. Shilkina ◽  
E. V. Glazunova ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Functional Materials ◽  
Ceramic Technology ◽  
Phase Synthesis ◽  
Fine Grained ◽  
Average Grain Size ◽  
Crystallite Sizes ◽  
Fine Grained Structure

Solid solutions of the composition Ba[Formula: see text](Mg, Ln)[Formula: see text]Sr[Formula: see text]TiO3 ([Formula: see text] = 0.01; 0.025; 0.04; [Formula: see text] = 0.20; 0.50; 0.80; Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tu, Yb) were prepared by two-stage solid-phase synthesis followed by sintering using conventional ceramic technology. The influence of rare-earth elements on the microstructure of the prepared ceramic samples was investigated. It was found that regardless of the type of modifiers introduced, the grain landscape of the studied solid solutions with different amounts of SrTiO3 is refined (in the initial system, the average grain size, [Formula: see text], at [Formula: see text] = 0.20 is 6 [Formula: see text]m; at [Formula: see text] = 0.50 is 4 [Formula: see text]m; at [Formula: see text] = 0.80 is 18 [Formula: see text]m) to crystallite sizes not exceeding (2–3) [Formula: see text]m, and compacted. The using of mechanical activation procedures leads to an even greater decrease in the size and an increase in the density of ceramics. The increasing in the concentration of modifiers in each group (within the considered range of dopant variation) against the background of such a fine-grained structure has little effect on the dynamics of changes in [Formula: see text]. It is concluded that it is advisable to use the data obtained in the development of functional materials based on BST/(Mg, Ln) and devices with the participation of these compositions.

New DSPEG Approach to Improvement of SOS Using Low Dose Self-Implantations

1986 ◽  
Vol 74 ◽  
Author(s):  
Eliezer Dovid Richmond ◽  
Alvin R. Knudson ◽  
H. Kawayoshi
Keyword(s):  
Epitaxial Growth ◽  
Low Dose ◽  
Solid Phase ◽  
Silicon Layer ◽  
Amorphous Layer ◽  
New Approach ◽  
Ion Damage ◽  
Defect Elimination

AbstractA new approach is proposed for the material improvement of silicon-on-sapphire (SOS). This approach utilizes the phenomena that the defect elimination throughout the silicon layer depends on both the deep and shallow self-implantations of the double solid phase epitaxial growth (DSPEG) technique for SOS material improvement. The new aspects of this approach are that the deep implantation does not form an amorphous layer, and therefore the ion damage to the substrate is minimized eliminating Al autodoping of the silicon layer.

Supersaturated solid solutions after solid phase epitaxial growth in Bi‐implanted silicon

1980 ◽  
Vol 37 (2) ◽  
pp. 170-172 ◽  
Author(s):  
S. U. Campisano ◽  
E. Rimini ◽  
P. Baeri ◽  
G. Foti
Keyword(s):  
Epitaxial Growth ◽  
Solid Solutions ◽  
Solid Phase ◽  
Supersaturated Solid Solutions

Anomalous Thermal Expansion in Solid-Phase Synthesis of Piezoceramic Material Based on Solid Solutions of Potassium and Sodium Niobates

2018 ◽  
Vol 74 (11-12) ◽  
pp. 440-443
Author(s):  
S. G. Ponomarev ◽  
V. P. Tarasovskii ◽  
V. V. Rybal’chenko ◽  
V. I. Koshkin ◽  
A. A. Vasin ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Solid Solutions ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Phase Synthesis ◽  
Piezoceramic Material ◽  
Anomalous Thermal Expansion
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