The Experts below are selected from a list of 243 Experts worldwide ranked by ideXlab platform
Stanisław Pikus - One of the best experts on this subject based on the ideXlab platform.
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Methods of investigation transformation kinetics of Yttrium carbonate hydroxide in citric acid solution into Yttrium citrate dihydrate.
MethodsX, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław Pikus, D. Pawlak, Jozef L. Parus, R. MikolajczakAbstract:Abstract A method of synthesis crystalline Yttrium citrate dihydrate was proposed as a result of the transformation of the freshly precipitated basic Yttrium carbonate phase in a citric acid solution. The synthesis time was determined on the basis of composition analysis, structure and thermogravimetric studies of samples taken during the synthesis. The research methods used have shown that in the initial stage of the synthesis, the processes of citric acid sorption on basic Yttrium carbonate and transformation of amorphous Yttrium carbonate hydroxide into crystalline Yttrium hydroxide occurs. It is only after 72 h of synthesis that the crystalline Yttrium citrate dihydrate is formed. • Synthesis crystalline Yttrium citrate dehydrate. • The synthesis time 72 h. • Synthesis components: the freshly precipitated basic Yttrium carbonate phase in a citric acid solution.
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Synthesis and thermogravimetric analysis of monoclinic Yttrium citrate dihydrate
Journal of Thermal Analysis and Calorimetry, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław PikusAbstract:The Yttrium citrate was synthesized using freshly precipitated Yttrium hydroxide and citric acid (or monosodium citrate) in the aqueous environment by the hydrothermal treatment at 80 °C or 100 °C. The properties of the samples were investigated using the CHN, XRD, TGA and static light scattering. Crystalline Yttrium citrate dihydrate is formed by the reaction of citric acid with freshly precipitated Yttrium hydroxide after 14 days of reaction at 80 or 100 °C. The thermogravimetric analysis of the crystalline sample of Yttrium citrate dihydrate, thermal decomposition of the compound in the synthetic air occurs in four stages with the release of mainly water and carbon dioxide. Methane and propyne are formed in smaller amounts.
Shinsuke Yamanaka - One of the best experts on this subject based on the ideXlab platform.
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Thermal properties of Yttrium hydride
Journal of Nuclear Materials, 2005Co-Authors: Masato Ito, Hiroaki Muta, Daigo Setoyama, Junji Matsunaga, Masayoshi Uno, Ken Kurosaki, Shinsuke YamanakaAbstract:Abstract The thermal properties of δ-phase Yttrium hydrides (YH x : x = 1.72–2.00) were studied in the temperature range from 300 to 773 K. The heat capacities of Yttrium hydrides are larger than that of Yttrium metal because of hydrogen optical vibration. The thermal conductivities of the Yttrium hydrides are larger than that of metal and have strong dependence on temperature. They are not markedly influenced by the hydrogen content.
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Mechanical properties of Yttrium hydride
Journal of Alloys and Compounds, 2004Co-Authors: Daigo Setoyama, Hiroaki Muta, Masato Ito, Junji Matsunaga, Masayohi Uno, Shinsuke YamanakaAbstract:The various shapes of flaw-free bulk Yttrium hydrides could be fabricated and various mechanical properties were obtained. The lattice parameter decreased with the hydrogen content. The Yttrium hydride had larger elastic moduli than the metal and the elastic moduli were dependent on the hydrogen content. The microhardness of the hydride was also larger than that of the metal and increased with hydrogen addition. The Debye temperature of the Yttrium hydride estimated from the sound velocities and the lattice parameters was larger than that of pure Yttrium metal. The hardness to Young's modulus ratio for the Yttrium hydride is larger than the ratio for the titanium hydride or zirconium hydride.
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Mechanical properties of Yttrium hydrogen solid solution
Journal of Alloys and Compounds, 2004Co-Authors: Masato Ito, Hiroaki Muta, Daigo Setoyama, Junji Matsunaga, Masayoshi Uno, Shinsuke YamanakaAbstract:Abstract The mechanical properties of Yttrium hydrogen solid solution (0–0.20 H/Y) were studied to reveal the influence of hydrogen on the characteristics of Yttrium. The elastic moduli such as Young's modulus and the shear modulus for Yttrium hydrogen solid solution increased with increasing of hydrogen content. The microhardness for the solid solution was also increased with increasing of hydrogen content. The electronic structure of the Yttrium hydrogen solid solution was evaluated by a first principle molecular orbital calculation. The mechanical properties of Yttrium hydrogen solid solution were discussed in terms of the calculation results.
Władysław Janusz - One of the best experts on this subject based on the ideXlab platform.
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Methods of investigation transformation kinetics of Yttrium carbonate hydroxide in citric acid solution into Yttrium citrate dihydrate.
MethodsX, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław Pikus, D. Pawlak, Jozef L. Parus, R. MikolajczakAbstract:Abstract A method of synthesis crystalline Yttrium citrate dihydrate was proposed as a result of the transformation of the freshly precipitated basic Yttrium carbonate phase in a citric acid solution. The synthesis time was determined on the basis of composition analysis, structure and thermogravimetric studies of samples taken during the synthesis. The research methods used have shown that in the initial stage of the synthesis, the processes of citric acid sorption on basic Yttrium carbonate and transformation of amorphous Yttrium carbonate hydroxide into crystalline Yttrium hydroxide occurs. It is only after 72 h of synthesis that the crystalline Yttrium citrate dihydrate is formed. • Synthesis crystalline Yttrium citrate dehydrate. • The synthesis time 72 h. • Synthesis components: the freshly precipitated basic Yttrium carbonate phase in a citric acid solution.
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Synthesis and thermogravimetric analysis of monoclinic Yttrium citrate dihydrate
Journal of Thermal Analysis and Calorimetry, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław PikusAbstract:The Yttrium citrate was synthesized using freshly precipitated Yttrium hydroxide and citric acid (or monosodium citrate) in the aqueous environment by the hydrothermal treatment at 80 °C or 100 °C. The properties of the samples were investigated using the CHN, XRD, TGA and static light scattering. Crystalline Yttrium citrate dihydrate is formed by the reaction of citric acid with freshly precipitated Yttrium hydroxide after 14 days of reaction at 80 or 100 °C. The thermogravimetric analysis of the crystalline sample of Yttrium citrate dihydrate, thermal decomposition of the compound in the synthetic air occurs in four stages with the release of mainly water and carbon dioxide. Methane and propyne are formed in smaller amounts.
Dariusz Sternik - One of the best experts on this subject based on the ideXlab platform.
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Methods of investigation transformation kinetics of Yttrium carbonate hydroxide in citric acid solution into Yttrium citrate dihydrate.
MethodsX, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław Pikus, D. Pawlak, Jozef L. Parus, R. MikolajczakAbstract:Abstract A method of synthesis crystalline Yttrium citrate dihydrate was proposed as a result of the transformation of the freshly precipitated basic Yttrium carbonate phase in a citric acid solution. The synthesis time was determined on the basis of composition analysis, structure and thermogravimetric studies of samples taken during the synthesis. The research methods used have shown that in the initial stage of the synthesis, the processes of citric acid sorption on basic Yttrium carbonate and transformation of amorphous Yttrium carbonate hydroxide into crystalline Yttrium hydroxide occurs. It is only after 72 h of synthesis that the crystalline Yttrium citrate dihydrate is formed. • Synthesis crystalline Yttrium citrate dehydrate. • The synthesis time 72 h. • Synthesis components: the freshly precipitated basic Yttrium carbonate phase in a citric acid solution.
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Synthesis and thermogravimetric analysis of monoclinic Yttrium citrate dihydrate
Journal of Thermal Analysis and Calorimetry, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław PikusAbstract:The Yttrium citrate was synthesized using freshly precipitated Yttrium hydroxide and citric acid (or monosodium citrate) in the aqueous environment by the hydrothermal treatment at 80 °C or 100 °C. The properties of the samples were investigated using the CHN, XRD, TGA and static light scattering. Crystalline Yttrium citrate dihydrate is formed by the reaction of citric acid with freshly precipitated Yttrium hydroxide after 14 days of reaction at 80 or 100 °C. The thermogravimetric analysis of the crystalline sample of Yttrium citrate dihydrate, thermal decomposition of the compound in the synthetic air occurs in four stages with the release of mainly water and carbon dioxide. Methane and propyne are formed in smaller amounts.
Ewa Skwarek - One of the best experts on this subject based on the ideXlab platform.
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Methods of investigation transformation kinetics of Yttrium carbonate hydroxide in citric acid solution into Yttrium citrate dihydrate.
MethodsX, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław Pikus, D. Pawlak, Jozef L. Parus, R. MikolajczakAbstract:Abstract A method of synthesis crystalline Yttrium citrate dihydrate was proposed as a result of the transformation of the freshly precipitated basic Yttrium carbonate phase in a citric acid solution. The synthesis time was determined on the basis of composition analysis, structure and thermogravimetric studies of samples taken during the synthesis. The research methods used have shown that in the initial stage of the synthesis, the processes of citric acid sorption on basic Yttrium carbonate and transformation of amorphous Yttrium carbonate hydroxide into crystalline Yttrium hydroxide occurs. It is only after 72 h of synthesis that the crystalline Yttrium citrate dihydrate is formed. • Synthesis crystalline Yttrium citrate dehydrate. • The synthesis time 72 h. • Synthesis components: the freshly precipitated basic Yttrium carbonate phase in a citric acid solution.
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Synthesis and thermogravimetric analysis of monoclinic Yttrium citrate dihydrate
Journal of Thermal Analysis and Calorimetry, 2020Co-Authors: Władysław Janusz, Ewa Skwarek, Dariusz Sternik, Stanisław PikusAbstract:The Yttrium citrate was synthesized using freshly precipitated Yttrium hydroxide and citric acid (or monosodium citrate) in the aqueous environment by the hydrothermal treatment at 80 °C or 100 °C. The properties of the samples were investigated using the CHN, XRD, TGA and static light scattering. Crystalline Yttrium citrate dihydrate is formed by the reaction of citric acid with freshly precipitated Yttrium hydroxide after 14 days of reaction at 80 or 100 °C. The thermogravimetric analysis of the crystalline sample of Yttrium citrate dihydrate, thermal decomposition of the compound in the synthetic air occurs in four stages with the release of mainly water and carbon dioxide. Methane and propyne are formed in smaller amounts.