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1.
D. M. Babanly I. I. Aliev K. N. Babanly Yu. A. Yusibov 《Russian Journal of Inorganic Chemistry》2011,56(9):1472-1477
Phase equilibria in the Ag2Te-PbTe-Bi2Te3 quasi-ternary system were studied by differential thermal analysis, X-ray powder diffraction, and measurements of microhardness
and emf of concentration circuits with an Ag4RbI5 solid electrolyte. Some polythermal sections and isothermal (600 and 800 K) sections of the phase diagram, and also a projection
of the liquidus surface were constructed. The primary crystallization fields of phases were determined, and the types and
coordinates of invariant and monovariant equilibria were found. The system is characterized by the formation of a wide continuous
band of high-temperature solid solutions (γ phase) with a cubic structure along the PbTe-AgBiTe2 section. With decreasing temperature (T ≤ 715 K), AgBiTe2 and γ solid solutions, close in composition to this compound, experience solid-phase decomposition to form Bi2Te3, ternary tetradymite-like phases of the PbTe-Bi2Te3 boundary system, and the low-temperature phase of Ag2Te. 相似文献
2.
Makoto Ohtsuka Christina Wedel Kimio Itagaki 《Monatshefte für Chemie / Chemical Monthly》2005,16(6):1909-1914
Isothermal sections of the Ni–Mn–Ga ternary phase diagram at 1073 and 1273 K were investigated over a wide range of alloy
compositions. The range of the β-Ni2MnGa phase, its equilibria with the γ-(Mn, Ni), α′-Ni3Ga, and γ-Ni3Ga2 phases, and the liquidus and solidus lines were determined experimentally. The aging effect on the shape memory effect (SME)
of Ni2MnGa sputtered films was also investigated. The two-way SME of the constraint-aged films was confirmed by the temperature
change. 相似文献
3.
F. N. Guseinov M. B. Babanly V. P. Zlomanov Yu. A. Yusibov 《Russian Journal of Inorganic Chemistry》2012,57(10):1387-1392
Phase equilibria in the Tl2Te-PbTe-Bi2Te3 system were studied by differential thermal analysis, X-ray powder diffraction, and microhardness measurements. Some polythermal sections and isothermal (at 600 and 800 K) sections of the phase diagram and a projection of the liquidus surface were constructed. It was shown that the system is characterized by the formation of solid solutions with the Tl5Te3 structure (??) and solid solutions based on PbTe (??1), Tl2Te (??), Bi2Te3 (??), and two TlBiTe2 (??2 and ?á?2) phases. Their homogeneity regions were determined. The liquidus surface consists of the primary crystallization fields of the ??-, ??1-, ?á?2-, and ??-phases and the compounds PbBi2Te4 and PbBi4Te7. The liquidus of the ?? phase is degenerate. The primary crystallization fields of the phases were determined, and the types and coordinates of in- and monovariant equilibria were found. 相似文献
4.
Summary. Isothermal sections of the Ni–Mn–Ga ternary phase diagram at 1073 and 1273 K were investigated over a wide range of alloy
compositions. The range of the β-Ni2MnGa phase, its equilibria with the γ-(Mn, Ni), α′-Ni3Ga, and γ-Ni3Ga2 phases, and the liquidus and solidus lines were determined experimentally. The aging effect on the shape memory effect (SME)
of Ni2MnGa sputtered films was also investigated. The two-way SME of the constraint-aged films was confirmed by the temperature
change. 相似文献
5.
Studies were undertaken of phase transitions of iron oxide obtained from iron oxide-hydroxides of type α-, β-, γ- and δ-FeOOH,
and used as a support of ruthenium catalysts Ru/Fe2O3, employed in the water-gas shift reaction. In asprepared pure supports and ruthenium catalysts the main phase was α-Fe2O3. After use in the water-gas shift reaction, the support showed the presence of different phases of iron oxide. The most active
Ru/Fe2O3 catalysts prepared on the basis of α- and δ-FeOOH, after use in the water-gas shift reaction, revealed the presence of Fe3O4 or a mixture of phases Fe3O4 and γ-Fe2O3. The least active catalysts, prepared on the basis of β- and γ-FeOOH, contained a solid solution of Fe3O4-γ-Fe2O3 with traces of α-Fe2O3. 相似文献
6.
D. M. Babanly S. V. Askerova M. B. Babanly Yu. A. Yusibov 《Russian Journal of Inorganic Chemistry》2011,56(7):1114-1118
Phase equilibria in the Tl5Te3-Tl9BiTe6-Tl5Te2Br system were studied by differential thermal analysis, X-ray powder diffraction, and measurements of microhardness and also
emf relative to a thallium electrode. Polythermal and isothermal sections of the phase diagram at 760 and 800 K, and projections
of the liquidus and solidus surfaces were constructed. The unit cell parameters, microhardness, and emf in the alloys were
described as functions of concentration. The system is characterized by the formation of complete solid solutions with the
Tl5Te3 structure. 相似文献
7.
The Tl-TlBr-Te composition region of the Tl-Te-Br phase diagram has been explored by DTA, X-ray diffraction, microhardness
measurements, and electromotive force (emf) measurements relative to a thallium electrode in concentrations cells. The phase
diagrams along a number of joins, the isothermal section at 400 K of the phase diagram, and a projection of the liquidus surface
have been constructed. Extensive phase-separation areas, including a three-liquid-phase field in the Tl-TlBr-Tl2Te subsystem, have been revealed. The homogeneity ranges and primary crystallization fields of phases have been mapped, and
the coordinates of nonvariant and univariant equilibria in the T-x-y diagram have been determined. The standard thermodynamic functions of formation of the Tl5Te2Br compound and its standard entropy have been derived from emf data. 相似文献
8.
D. M. Babanly S. V. Askerova Z. S. Aliev M. B. Babanly 《Russian Journal of Inorganic Chemistry》2011,56(11):1833-1838
Phase equilibria in the Tl5Te3-Tl9BiTe6-Tl5Te2Cl system were studied by differential thermal analysis (DTA), X-ray powder diffraction, and measurements of microhardness
and also emf of concentration circuits with reference to a thallium electrode. A number of polythermal sections, the isothermal
sections of the phase diagram at 760 and 800 K, and projections of the liquidus and solidus surfaces were constructed. It
was shown that the system is characterized by the formation of unlimited solid solutions with the Tl5Te3 structure. The concentration dependences of the crystal lattice parameters, microhardness, and emf in the solid solutions
were described. 相似文献
9.
The Tl2S-Sb2S3-Bi2S3 quasi-ternary system (system A) was studied using DTA, X- ray powder diffraction, microstructure examination, and microhardness measurements. TlSbS2-Tl4Bi2S5(TlBiS2, Bi2S3), Sb2S3-TlBiS2, Tl3SbS3-TlBiS2(Bi2S3), and [TlSb0.5Bi0.5S2]-Tl2S isopleths; isothermal sections at 500 K; and liquidus surface projection of system A were constructed. Characteristic features of the title system are extensive fields of solid solutions extended along the
TlSbS2-TlBiS2 quasi-binary section and a continuous solubility belt 1–2 mol % wide extended along the Sb2S3-Bi2S3 binary subsystem. Primary separation fields of phases and the types and coordinates of invariant and monovariant equilibria
in system A were determined. 相似文献
10.
N. B. Babanly I. I. Aliev M. B. Babanly 《Russian Journal of Inorganic Chemistry》2009,54(9):1482-1489
The Ag2Se-Tl2Se-Bi2Se3 quasi-ternary system (system A) was studied using DTA, X-ray powder diffraction, microstructure examination, and microhardness measurements. TlBiSe2-AgBiSe2, AgTlSe-AgBiSe2, AgTlSe-Bi2Se3, and Tl2Se-AgBiSe2 polytherms, isothermal sections at 500 and 800 K, and liquidus surface projection of system A were constructed. System A is congruently triangulated into the following subordinate triangles: Tl2Se-AgTlSe-Tl9BiSe6 (I), AgTlSe-Tl9BiSe6-TlBiSe2 (II), Ag2Se-AgTlSe-TlBiSe2 (III), Ag2Se-AgBiSe2-TlBiSe2 (IV), and AgBiSe2-TlBiSe2-Bi2Se3 (V). Subsystems I, III, and V are ternary systems with three-phase eutectic equilibrium; system II has a three-phase eutectic, and system IV is characterized by several invariant and monovariant peritectic and eutectic equilibria. Primary crystallization and homogeneity
fields were outlined, and the types and coordinates of invariant and monovariant equilibria in system A were determined. A characteristic feature of the title system is an extensive field of solid solutions between high-temperature
cubic AgBiSe2 and TlBiSe2 phases; this field lies as a continuous belt along the AgBiSe2-TlBiSe2 quasibinary section and covers about one-fourth of the surface area of the triangular diagram of system A. 相似文献
11.
I. B. Bakhtiyarly D. Sh. Abdinov R. A. Ismaiyilova E. A. Geidarova 《Russian Journal of Inorganic Chemistry》2008,53(4):624-627
Phase equilibria in the Sb2Te3-Gd2Te3-Bi2Te3 ternary system have been studied using differential thermal analysis, namely, X-ray powder diffraction, microstructure examination, thermodynamic analysis, and microhardness and alloy density measurements. Phase diagrams of some polythermal joins and liquidus surface have been constructed. The regions of primary crystallization of phases and the coordinates of all invariant and univariant equilibria in the system under investigation have been established. 相似文献
12.
The inclusion of vanadocene dichloride (VDC) and 1,1′-dimethyl vanadocene dichloride (MeVDC) into cyclodextrines (α-CD, β-CD
and γ-CD) was studied by EPR spectroscopy. It was found that VDC and MeVDC with β-CD and γ-CD form true inclusion compounds,
but with α-CD, VDC and MeVDC gave only fine dispersion mixtures. The inclusion was validated by anisotropic EPR spectra of
solid samples. In addition, the antimicrobial was validated by anisotropic EPR spectra of solid samples. In addition, the
antimicrobial behavior (against E. coli) of each of the complexes was determined. It was established that not only did VDC and MeVDC cause elongation of E. coli, but also the new vanadocene inclusion complexes were effective in this regard. 相似文献
13.
D. M. Babanly Yu. A. Yusibov M. B. Babanly 《Russian Journal of Inorganic Chemistry》2007,52(5):753-760
Phase equilibria in the system Tl-Se-Cl were studied in the region Tl-TlCl-Se by DTA, X-ray powder diffraction, emf measurements
concentration circuits (−) Tl/glycerol + KCl + TlCl/(Tl-Se-Ce) (+), and microhardness measurements. Several vertical sections,
an isothermal section at 400 K, and the liquidus-surface projection were constructed. The primary crystallization regions
and homogeneity regions of phases were determined, including the α phase of variable composition based on Tl5Se2Cl, the only ternary compound of the system. The types and coordinates of invariant and monovariant equilibria on the T-x-y diagram were determined. From the results of emf measurements, the standard thermodynamic functions of formation and the
standard entropy were calculated for the compound Tl5Se2Cl.
Original Russian Text ¢ D.M. Babanly, Yu.A. Yusibov, M.B. Babanly, 2007, published in Zhurnal Neorganicheskoi Khimii, 2007,
Vol. 52, No. 5, pp. 819–826. 相似文献
14.
P. A. Arbukhanova Ya. A. Dibirov N. N. Verdiev A. M. Amadziev 《Russian Journal of Inorganic Chemistry》2009,54(6):980-982
The liquidus surface of the CaF2-CaCl2-CaSO4 system has been investigated by differential thermal analysis. Two invariant equilibria (one eutectic and one peritectic)
are realized in the system. The eutectic and peritectic melt at 597 and 703°C, and the enthalpies of phase transitions are
206 and 378.1 kJ/kg, respectively. Investigation of the ternary system formed by the natural minerals fluorite (CaF2), anhydrite (CaSO4), and calcium chloride (a relatively low-melting inorganic solvent) is undertaken with the goal of developing power-intensive
heat-accumulating phase-transition materials and electrolytes of diversified application.
Original Russian Text ? P.A. Arbukhanova, Ya.A. Dibirov, N.N. Verdiev, A.M. Amadziev, 2009, published in Zhurnal Neorganicheskoi
Khimii, 2009, Vol. 54, No. 6, pp. 1043–1045. 相似文献
15.
La2Mo2O9 (LMO) was synthesized at lower temperature 973 K (LT-phase) by ceramic route. Differential thermal analysis (DTA) scan of
LT-phase of LMO showed α→β transition at 843 K during heating and β→α conversion via a metastable γ-phase during cooling.
This was also confirmed by thermo-dilatometry and impedance spectroscopy. La2Mo1.95V0.05O9-δ (LMVO), La1.96Sr0.04Mo2O9-δ (LSMO) and La1.96Sr0.04Mo1.95V0.05O9-δ (LSMVO) were prepared in a similar way. These compounds exhibited α→β transition on heating with shift in transition temperature,
but the existence of γ-phase during cooling disappeared. Substitution increased the ionic conductivity of α-phase and reduced
that of β-phase. 相似文献
16.
Jouti M. B. Bouroukba M. Balesdent D. Dirand M. 《Journal of Thermal Analysis and Calorimetry》1998,54(3):785-802
The enthalpy variations of pure n-tricosane (n-C23H48), pure n-pentacosane (n-C25H52) and sixteen binary mixtures were determined from 282 to 360 K. The differential enthalpy analyses were carried out on the
pure components on the four terminal solid solutions, denoted βo(C23), β′o(C23), β′o(C25), βo(C25) and on the three intermediate phases, called β″1, β′1, β″2of the binary system (C23:C25) using a calorimeter of the Tian Calvet type. These variations can be represented by an analytical expression, which is derived
from Einstein‘s model. The two Rotator phases β-RI and α-RII were also studied.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
17.
The TlAs2Se4-Tl3As2Se3Te3 system was studied using differential thermal analysis (DTA), powder X-ray diffraction, microstructure observation, and microhardness
and density measurements. A phase diagram of the title system was constructed. This system is a quasi-binary join of the TlSe-As2Se3-As2Te3 quasi-ternary system. All alloys of the system under standard conditions are prepared in the glassy form. The system has
a eutectic, which contains 50 mol % Tl3As2Se3Te3 and melts at 150°C. The TlAs2Se4-base solid solution in the system extends to 12 mol % Tl3As2Se3Te3, and Tl3As2Se3Te3-based solid solution extends to 20 mol % TlAs2Se4. 相似文献
18.
Ozao R. Yoshida H. Ichimura Y. Inada T. Ochiai M. 《Journal of Thermal Analysis and Calorimetry》2001,64(3):915-922
The thermal change of anodic alumina (AA), particularly the exothermic peak followed by the endothermic peak at ca 950°C was
studied in detail by mainly using simultaneous TG-DTA/FTIR. The gradual loss of mass up to ca 910°C is attributed to dehydration.
When heated at a constant rate by using TG-DTA, an exothermic peak with subsequent endothermic peak is observed at ca 950°C,
but the exothermic peak becomes less distinct with decreasing heating rate. It has been found that gaseous SO2 accompanying a small amount of CO2 is mainly discharged at this stage. The reaction in this stage can be considered roughly in two schemes. The first scheme
can be said collectively as crystallization, in which the migration of S or C trapped inside the crystal lattice of the polycrystalline
phase (γ-, δ-, and θ-Al2O3, which presumably accompanies a large amount of amorphous or disordered phase) occurs. In the second scheme, the initial
polycrystalline (+amorphous) phase crystallizes into a quasi-crystallineγ-Al2O3-like metastable phase after amorphization. Conclusively,after the distinct exo- and endothermic reactions, the amorphous
phase crystallizes intoγ-Al2O3, presumably accompanying small amount of δ-Al2O3. It is also found that, when maintained isothermally, the metastable phases undergo transformation into the stable α-Al2O3 at 912°C.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
19.
The formation ofβ-phase Bi2Mo2O9 catalyst from a precursor precipitate has been studied using thein situ combined XRD/QuEXAFS technique and DSC during calcination. Accordingly the precursor was observed to undergo a number of
changes in both the molybdenum (VI) coordination and long-range ordering during this heating. Initially the two other forms
of bismuth molybdate (α-andγ-phases) were observed to form from the poorly crystalline precursor at about 230°C, however, theβ-phase eventually crystallised after prolonged heating at 560°C.
Dedicated to Professor C N R Rao on his 70th birthday 相似文献
20.
T. A. Rodina A. V. Ivanov O. V. Loseva O. A. Bredyuk 《Russian Journal of Inorganic Chemistry》2009,54(12):1964-1968
The Cu2+ sorption properties of the polynuclear thallium(I) N,N-cyclo-hexamethylenedithiocarbamate complex [Tl2{S2CN(CH2)6}2]n (I) are reported. The sorption capacity of the complex is ∼67 mg/g. According to EPR data, freshly precipitated I binds copper from the aqueous phase by chemisorption, which results in the formation of the β-form of the paramagnetic trinuclear
complex [CuTl2{S2CN(CH2)6}4] (containing a small amount of its α-form). Scanning electron microscopic data indicate cardinal reformation of the chemisorbent
particles upon copper(II) sorption, including changes in the particle shape and size. 相似文献