Pub Date : 2023-06-01DOI: 10.14489/glc.2023.06.pp.054-059
I. Sudzhanskaya, V. S. Sotnikova
Samples of Zr0.9Y0.1O2–?–BiScO3 and Сe0.9Y0.1O2–?–BiScO3 solid solutions were obtained by solid-phase synthesis. X-ray diffraction revealed that the Zr0.9Y0.1O2–?–BiScO3 system corresponds to a tetragonal structure with space symmetry group P42/nmc. The Сe0.9Y0.1O2–?–BiScO3 ceramics is two-phase and is characterized by a cubic structure with space symmetry groups and Ia–3. Using the impedance spectroscopy method, it was found that the Сe0.9Y0.1O2–?–BiScO3 system has the highest electrical conductivity, however, the activation energy is lower in the Zr0.9Y0.1O2–?–BiScO3 ceramics, amounting to 0.3 eV in the temperature range of 300–420 ?С and 0.7 eV in the temperature range 420–680 ?С. The activation energy of the Сe0.9Y0.1O2–?–BiScO3 solid solution is 1.0 eV.
{"title":"PREPARATION, STRUCTURE AND IONIC CONDUCTIVITY OF THE M0.9Y0.1O2–?–BiScO3 (M = Zr, Ce)","authors":"I. Sudzhanskaya, V. S. Sotnikova","doi":"10.14489/glc.2023.06.pp.054-059","DOIUrl":"https://doi.org/10.14489/glc.2023.06.pp.054-059","url":null,"abstract":"Samples of Zr0.9Y0.1O2–?–BiScO3 and Сe0.9Y0.1O2–?–BiScO3 solid solutions were obtained by solid-phase synthesis. X-ray diffraction revealed that the Zr0.9Y0.1O2–?–BiScO3 system corresponds to a tetragonal structure with space symmetry group P42/nmc. The Сe0.9Y0.1O2–?–BiScO3 ceramics is two-phase and is characterized by a cubic structure with space symmetry groups and Ia–3. Using the impedance spectroscopy method, it was found that the Сe0.9Y0.1O2–?–BiScO3 system has the highest electrical conductivity, however, the activation energy is lower in the Zr0.9Y0.1O2–?–BiScO3 ceramics, amounting to 0.3 eV in the temperature range of 300–420 ?С and 0.7 eV in the temperature range 420–680 ?С. The activation energy of the Сe0.9Y0.1O2–?–BiScO3 solid solution is 1.0 eV.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139371123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.14489/glc.2023.06.pp.003-014
G. Y. Shakhgildyan, V. Durymanov, L. Avakyan, G. N. Atroshenko, M. Vetchinnikov, R. O. Alexeev, E. Ignat'eva, N. V. Golubev, A. A. Zolikova, L. Bugaev, V. Sigaev
Using absorption spectroscopy, differential scanning calorimetry, and X-ray powder diffraction, we studied the effect of a small addition of CeO2 on the process of thermally stimulated formation of plasmonic Au nanoparticles in the glass of the ZnO–MgO–Al2O3–SiO2 system containing TiO2 and ZrO2 as nucleating agents. It is shown that when the glass is heated from temperatures slightly above Tg to temperatures in the region of the exothermic peak, the plasmon resonance band of Au nanoparticles undergoes a nonlinear shift; however, the addition of CeO2 significantly expands the the shift to the long wavelength region of the spectrum. We performed the computer simulation of the experimental optical absorption spectra, estimated the sizes of the formed nanoparticles and proposed the mechanism of the effect of the CeO2 addition on the formation of plasmonic Au nanoparticles.
{"title":"INFLUENCE OF CeO2 ON THE FORMATION OF PLASMONIC Au NANOPARTICLES IN GLASSES OF THE ZnO–MgO–Al2O3–SiO2 SYSTEM","authors":"G. Y. Shakhgildyan, V. Durymanov, L. Avakyan, G. N. Atroshenko, M. Vetchinnikov, R. O. Alexeev, E. Ignat'eva, N. V. Golubev, A. A. Zolikova, L. Bugaev, V. Sigaev","doi":"10.14489/glc.2023.06.pp.003-014","DOIUrl":"https://doi.org/10.14489/glc.2023.06.pp.003-014","url":null,"abstract":"Using absorption spectroscopy, differential scanning calorimetry, and X-ray powder diffraction, we studied the effect of a small addition of CeO2 on the process of thermally stimulated formation of plasmonic Au nanoparticles in the glass of the ZnO–MgO–Al2O3–SiO2 system containing TiO2 and ZrO2 as nucleating agents. It is shown that when the glass is heated from temperatures slightly above Tg to temperatures in the region of the exothermic peak, the plasmon resonance band of Au nanoparticles undergoes a nonlinear shift; however, the addition of CeO2 significantly expands the the shift to the long wavelength region of the spectrum. We performed the computer simulation of the experimental optical absorption spectra, estimated the sizes of the formed nanoparticles and proposed the mechanism of the effect of the CeO2 addition on the formation of plasmonic Au nanoparticles.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139371744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.14489/glc.2023.06.pp.015-021
Yu. V. Mikhailov, A. Lipatiev, T. O. Lipatieva, S. Fedotov, M. Ziyatdinova, P. I. Ivanov, V. Sigaev
The formation of microtracks in the volume of porous glass samples by femtosecond laser pulses which is of importance for laser writing of active optical waveguides was studied. It was found that impregnation of nanoporous glass in bismuth nitrate solution leads to the appearance of an orange luminescence band under 488 nm light excitation and this luminescence band is enhanced in the laser-wriiten tracks. It is shown that increasing the laser pulse energy to 200 nJ allows increasing the phase contrast of the tracks laser-written in nanoporous glass doped with bismuth compared to the ones formed in nanoporous glass without additives.
{"title":"LASER FORMATION OF LUMINESCENT TRACKS IN BISMUTH-DOPED NANOPOROUS GLASS","authors":"Yu. V. Mikhailov, A. Lipatiev, T. O. Lipatieva, S. Fedotov, M. Ziyatdinova, P. I. Ivanov, V. Sigaev","doi":"10.14489/glc.2023.06.pp.015-021","DOIUrl":"https://doi.org/10.14489/glc.2023.06.pp.015-021","url":null,"abstract":"The formation of microtracks in the volume of porous glass samples by femtosecond laser pulses which is of importance for laser writing of active optical waveguides was studied. It was found that impregnation of nanoporous glass in bismuth nitrate solution leads to the appearance of an orange luminescence band under 488 nm light excitation and this luminescence band is enhanced in the laser-wriiten tracks. It is shown that increasing the laser pulse energy to 200 nJ allows increasing the phase contrast of the tracks laser-written in nanoporous glass doped with bismuth compared to the ones formed in nanoporous glass without additives.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139371813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-01DOI: 10.14489/glc.2022.02.pp.040-046
V. Muraviev, B. Makeev, M. Krzhizhanovskaya, R. Korolev, N. Zhuk
Nickel pyrochlore of the composition Bi2NiTa2O9 was synthesized by the solid-phase reaction method (sp. gr. Fd-3m, a = 10.5238 Å). The process of phase formation of nickel-containing bismuth tantalate Bi2NiTa2O9 with a pyrochlore structure is investigated. The pyrochlore phase synthesis reaction is described by the interaction of orthorhombic bismuth orthotantalate and nickel oxide. Synthesis proceeds mainly at temperatures above 900 °С. The duration of calcination of the preparations leads to the coalescence of grains with the formation of larger particles. The calcination temperature did not significantly affect the microstructure of the samples. The samples are characterized by a porous dendritic microstructure with a grain size of 0.5 – 1.0 µm. The optimal conditions for obtaining pure pyrochlore can be considered a temperature of 1050 °С and calcination time of 15 hours.
采用固相法合成了Bi2NiTa2O9成分的焦绿镍(sp. gr. Fd-3m, a = 10.5238 Å)。研究了具有焦绿石结构的含镍钽酸铋Bi2NiTa2O9的相形成过程。通过正交正钽酸铋与氧化镍的相互作用，描述了焦绿盐相的合成反应。合成主要在900°以上的温度下进行С。煅烧的持续时间导致颗粒合并，形成更大的颗粒。煅烧温度对样品的微观结构影响不显著。样品具有多孔枝晶结构，晶粒尺寸为0.5 ~ 1.0µm。获得纯焦绿盐的最佳条件是温度为1050°С，煅烧时间为15小时。
{"title":"SYNTHESIS OF Bi2NiTa2O9 WITH A PYROCHLORE-TYPE STRUCTURE","authors":"V. Muraviev, B. Makeev, M. Krzhizhanovskaya, R. Korolev, N. Zhuk","doi":"10.14489/glc.2022.02.pp.040-046","DOIUrl":"https://doi.org/10.14489/glc.2022.02.pp.040-046","url":null,"abstract":"Nickel pyrochlore of the composition Bi2NiTa2O9 was synthesized by the solid-phase reaction method (sp. gr. Fd-3m, a = 10.5238 Å). The process of phase formation of nickel-containing bismuth tantalate Bi2NiTa2O9 with a pyrochlore structure is investigated. The pyrochlore phase synthesis reaction is described by the interaction of orthorhombic bismuth orthotantalate and nickel oxide. Synthesis proceeds mainly at temperatures above 900 °С. The duration of calcination of the preparations leads to the coalescence of grains with the formation of larger particles. \u0000The calcination temperature did not significantly affect the microstructure of the samples. The samples are characterized by a porous dendritic microstructure with a grain size of 0.5 – 1.0 µm. The optimal conditions for obtaining pure pyrochlore can be considered a temperature of 1050 °С and calcination time of 15 hours.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133556025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.14489/glc.2022.01.pp.039-050
B. L. Krasniy, K. Ikonnikov, D. Lemeshev, A. Sizova
The article provides an overview of mineral oxide fibers of various chemical composition: aluminosilicate, alumina, silica, bio-soluble, zirconium oxide fibers and others. Methods for producing discrete and continuous fibers, such as spinning fibers from melts, sol-gel technology, spinning from solutions of metal salts, etc., are described. filtration for alumino-silicate and bio-soluble fibers; thermal insulation up to 1600 or 2000 C and reinforcement of composites used in the aerospace and defense industries for alumina fibers and fibers based on zirconium dioxide, etc. Producers of mineral oxide-containing fibers and products based on them abroad and in Russia are represented.
{"title":"OXIDE-CONTAINING MINERAL FIBERS: TYPES, METHODS OF PRODUCTION, APPLICATION AND MANUFACTURERS (REVIEW)","authors":"B. L. Krasniy, K. Ikonnikov, D. Lemeshev, A. Sizova","doi":"10.14489/glc.2022.01.pp.039-050","DOIUrl":"https://doi.org/10.14489/glc.2022.01.pp.039-050","url":null,"abstract":"The article provides an overview of mineral oxide fibers of various chemical composition: aluminosilicate, alumina, silica, bio-soluble, zirconium oxide fibers and others. Methods for producing discrete and continuous fibers, such as spinning fibers from melts, sol-gel technology, spinning from solutions of metal salts, etc., are described. filtration for alumino-silicate and bio-soluble fibers; thermal insulation up to 1600 or 2000 C and reinforcement of composites used in the aerospace and defense industries for alumina fibers and fibers based on zirconium dioxide, etc. Producers of mineral oxide-containing fibers and products based on them abroad and in Russia are represented.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121003726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.14489/glc.2022.01.pp.051-058
D. V. Smirnov, D. A. Prozorov, R. Rumyantsev, A. V. Afineevsky, K. A. Nikitin, A. Meledin, A. A. Kurnikova
The article discusses the mechanochemical synthesis of a catalyst for the synthesis of methanol. Comparative mechanical activation of both individual components of the catalyst (copper oxide, zinc oxide, and aluminum oxide) and their various mixtures under different conditions has been carried out. The article discusses the structural characteristics of the catalyst for the synthesis of methanol, obtained using X-ray phase analysis, scanning microscopy and low-temperature adsorption of nitrogen.
{"title":"THE STRUCTURE FORMATION OF CuO/ZnO/?-Al2O3 CATALYST FOR THE METHANOL SYNTHESIS PROCESS DURING MECHANOCHEMICAL SYNTHESIS","authors":"D. V. Smirnov, D. A. Prozorov, R. Rumyantsev, A. V. Afineevsky, K. A. Nikitin, A. Meledin, A. A. Kurnikova","doi":"10.14489/glc.2022.01.pp.051-058","DOIUrl":"https://doi.org/10.14489/glc.2022.01.pp.051-058","url":null,"abstract":"The article discusses the mechanochemical synthesis of a catalyst for the synthesis of methanol. Comparative mechanical activation of both individual components of the catalyst (copper oxide, zinc oxide, and aluminum oxide) and their various mixtures under different conditions has been carried out. The article discusses the structural characteristics of the catalyst for the synthesis of methanol, obtained using X-ray phase analysis, scanning microscopy and low-temperature adsorption of nitrogen.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123994997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.14489/glc.2022.01.pp.031-038
N. K. Golubeva, D. Danilovich, D. D. Nesmelov, I. D. Shabalkin
In this work, the effect of the annealing temperature and the chemical history of the precipitate on the morphology and phase composition of the Nb2O5 powder was studied. Nb2O5nH2O precipitate and gel-like niobium citrate were obtained by solution methods. The synthesis of niobium oxide was carried out at temperatures of 600, 1000, and 1200 °C, the synthesis products were analyzed using X-ray diffraction, scanning electron microscopy, X-ray microscopy, and differential thermal and thermogravimetric analysis. Annealing of niobium citrate at a temperature of 600 °C makes it possible to obtain niobium oxide particles with an average size of about 70 nm, which is 4 – 6 times smaller than Nb2O5 obtained from the Nb2O5nH2O precipitate.
{"title":"PREPARATION OF NIOBIUM (V) OXIDE WITH CONTROLLED DISPERSITY AND MORPHOLOGY","authors":"N. K. Golubeva, D. Danilovich, D. D. Nesmelov, I. D. Shabalkin","doi":"10.14489/glc.2022.01.pp.031-038","DOIUrl":"https://doi.org/10.14489/glc.2022.01.pp.031-038","url":null,"abstract":"In this work, the effect of the annealing temperature and the chemical history of the precipitate on the morphology and phase composition of the Nb2O5 powder was studied. Nb2O5nH2O precipitate and gel-like niobium citrate were obtained by solution methods. The synthesis of niobium oxide was carried out at temperatures of 600, 1000, and 1200 °C, the synthesis products were analyzed using X-ray diffraction, scanning electron microscopy, X-ray microscopy, and differential thermal and thermogravimetric analysis. Annealing of niobium citrate at a temperature of 600 °C makes it possible to obtain niobium oxide particles with an average size of about 70 nm, which is 4 – 6 times smaller than Nb2O5 obtained from the Nb2O5nH2O precipitate.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128295695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.14489/glc.2022.01.pp.012-014
V. Lysenko
By means of the method of the spark plasma sintering (SPS) on the basis of nanodimensional powder of nickel oxide (with an average particle size of about 100 nm), the fine-grained (of 250 – 500 nanometers approximately), dense (5.93 g/cm3), strong ceramics with the high microhardness Hv = 8.2 GPa, ultimate compressive strength ?B = 0.4 GPa and Young?s modulus of elasticity E = 140 GPa is created. The obtained ceramic sample was nickel oxide NiO (73-1519) with cubic structure, space group Fm3m (No. 225) and lattice size a = 4.168 ?.
{"title":"CREATION AND PROPERTIES OF CERAMICS FROM NICKEL OXIDE NANOPOWDER","authors":"V. Lysenko","doi":"10.14489/glc.2022.01.pp.012-014","DOIUrl":"https://doi.org/10.14489/glc.2022.01.pp.012-014","url":null,"abstract":"By means of the method of the spark plasma sintering (SPS) on the basis of nanodimensional powder of nickel oxide (with an average particle size of about 100 nm), the fine-grained (of 250 – 500 nanometers approximately), dense (5.93 g/cm3), strong ceramics with the high microhardness Hv = 8.2 GPa, ultimate compressive strength ?B = 0.4 GPa and Young?s modulus of elasticity E = 140 GPa is created. The obtained ceramic sample was nickel oxide NiO (73-1519) with cubic structure, space group Fm3m (No. 225) and lattice size a = 4.168 ?.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125147200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.14489/glc.2022.01.pp.015-020
V. V. Mylnikov, A. I. Pronin, S. Veselov, D. Valko
The paper presents the results of a study on the durability of cutting ceramics: a replaceable polyhedral plate developed at NSTU and cutting ceramics WOK-60 when processing hardened steel blanks made of 40X (45HRC) steel. As a result of the tests carried out, it was found that with the use of cutting modes developed at KNAU, the durability of SMP from cutting ceramics created at NSTU is more than 1.7 times higher than the performance of plates based on the WOK-60 material. At the same time, the roughness of the treated surface of the work piece was Ra = 0.35 ? 0.05 microns when using SMP from the developed ceramics Ra = 0.55 ? 0.05 microns when using WOK-60 plates. The stages of destruction of cutting ceramic plates are revealed, taking into account the hierarchy of structural scales.
{"title":"RESULTS OF COMPARATIVE STUDIES ON THE DURABILITY OF CUTTING CERAMIC PLATES WHEN TURNING HARDENED STEEL BLANKS","authors":"V. V. Mylnikov, A. I. Pronin, S. Veselov, D. Valko","doi":"10.14489/glc.2022.01.pp.015-020","DOIUrl":"https://doi.org/10.14489/glc.2022.01.pp.015-020","url":null,"abstract":"The paper presents the results of a study on the durability of cutting ceramics: a replaceable polyhedral plate developed at NSTU and cutting ceramics WOK-60 when processing hardened steel blanks made of 40X (45HRC) steel. As a result of the tests carried out, it was found that with the use of cutting modes developed at KNAU, the durability of SMP from cutting ceramics created at NSTU is more than 1.7 times higher than the performance of plates based on the WOK-60 material. At the same time, the roughness of the treated surface of the work piece was Ra = 0.35 ? 0.05 microns when using SMP from the developed ceramics Ra = 0.55 ? 0.05 microns when using WOK-60 plates. The stages of destruction of cutting ceramic plates are revealed, taking into account the hierarchy of structural scales.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133405072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.14489/glc.2022.01.pp.003-011
O. Ivanov, M. Yaprintsev, A. Vasil'ev, E. P. Dan’shina
Specific mechanisms of grain structure effect on the thermoelectric properties (specific electrical resistivity and total thermal conductivity) of the Bi1.9Gd0.1Te3 compound have been analyzed. These mechanisms are as follows: 1) forming the surface Te vacancies at grain boundaries acting as donor centres; 2) changing the elemental composition of the grains at high-temperature Te evaporation under thermal treatment of material to prepare the samples with desired average grain size.
{"title":"EFFECT OF FEATURES IN GRAIN STRUCTURE ON THE THERMOELECTRIC PROPERTIES OF COMPOUNDS BASED ON BISMUTH TELLURIDE","authors":"O. Ivanov, M. Yaprintsev, A. Vasil'ev, E. P. Dan’shina","doi":"10.14489/glc.2022.01.pp.003-011","DOIUrl":"https://doi.org/10.14489/glc.2022.01.pp.003-011","url":null,"abstract":"Specific mechanisms of grain structure effect on the thermoelectric properties (specific electrical resistivity and total thermal conductivity) of the Bi1.9Gd0.1Te3 compound have been analyzed. These mechanisms are as follows: 1) forming the surface Te vacancies at grain boundaries acting as donor centres; 2) changing the elemental composition of the grains at high-temperature Te evaporation under thermal treatment of material to prepare the samples with desired average grain size.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"100 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134412512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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