Glass Physics and Chemistry最新文献_第3页

Production of Block Catalysts for Carbon Monoxide Oxidation Using Additive Technologies 利用添加剂技术生产用于一氧化碳氧化的块状催化剂

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-07-02 DOI: 10.1134/S1087659623601247

O. A. Cheremisina, M. M. Sychev, A. S. Dolgin, T. A. Vishnevskaya, N. V. Mal’tseva, A. S. Volobueva

引用次数: 0

Features of Barium–Strontium Cobaltite as a Catalyst for Hydrogen Generation 作为制氢催化剂的钡锶钴石的特点

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-07-02 DOI: 10.1134/S1087659623601181

M. S. Paizullakhanov, O. R. Parpiev, F. N. Ernazarov, N. Kh. Karshieva, O. N. Ruzimuradov, O. A. Shilova

{"title":"Features of Barium–Strontium Cobaltite as a Catalyst for Hydrogen Generation","authors":"M. S. Paizullakhanov, O. R. Parpiev, F. N. Ernazarov, N. Kh. Karshieva, O. N. Ruzimuradov, O. A. Shilova","doi":"10.1134/S1087659623601181","DOIUrl":"10.1134/S1087659623601181","url":null,"abstract":"Anion-deficient structures based on a Sr0.5Ba0.5Co1 – xFexO3 – δ composition, synthesized from a melt in a solar oven in a flux of concentrated solar radiation with a density of 100–200 W/cm2 are studied. Briquettes in the form of tablets based on a stoichiometric mixture of carbonates and oxides of the corresponding metals (SrCO3 + BaCO3 + Co2O3 + Fe2O3) are melted in the focal zone of the great solar furnace. Melt drops flow into the water, cooling at a rate of 103 deg/s. The castings were ground to a fineness of 63 µm, dried at 400°C, and molded into tablets (samples) with a diameter of 20 mm and a height of 10 mm. Samples of the material are sintered in the temperature range 1050–1250°C. The samples are used to study the structure, water absorption, and destruction in a carbon dioxide environment. The crystal lattice of the material has a perovskite structure with the unit cell parameter a = 4.04 Å. Samples of the material show resistance to water vapor. The observed values of the structural parameters indicate that the material of composition Sr0.5Ba0.5Co0.8Fe0.2O2.78 can be used as a catalyst for the generation of hydrogen and synthesis gas through reforming and methane oxidation.","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 1","pages":"55 - 60"},"PeriodicalIF":0.8,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141519226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultralow Melting Ammonium Polyphosphate Compounds 超低熔点聚磷酸铵化合物

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-07-02 DOI: 10.1134/S108765962360120X

A. Yu. Shaulov, A. V. Grachev, N. V. Avramenko, V. Yu. Bychkov, A. V. Lyubimov, A. A. Berlin

引用次数: 0

Concentration Effect of Glass Former on the Lumenescene Properties of Tb3+-Ions Doped Na2O–CaO–B2O3–TeO2 Glasses for Laser Applications 玻璃成形剂的浓度对用于激光应用的掺杂 Tb3+ 离子的 Na2O-CaO-B2O3-TeO2 玻璃的发光特性的影响

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-07-02 DOI: 10.1134/S1087659623600825

M. Shoaib, Ata Ullah, Abdullah A. A. Mohammed, S. M. Wabaidur, F. Qiao, I. Khan, G. Rooh, I. Ullah

{"title":"Concentration Effect of Glass Former on the Lumenescene Properties of Tb3+-Ions Doped Na2O–CaO–B2O3–TeO2 Glasses for Laser Applications","authors":"M. Shoaib, Ata Ullah, Abdullah A. A. Mohammed, S. M. Wabaidur, F. Qiao, I. Khan, G. Rooh, I. Ullah","doi":"10.1134/S1087659623600825","DOIUrl":"10.1134/S1087659623600825","url":null,"abstract":"In this work we prepared boro-telluride glass samples while varying the concentration of TeO2 (0.00, 10.00, 20.00 mol %) by melt quenching technique and study their physical, optical and luminescence properties by various characterization methods. We found that band gap lies in the 2.88–2.18 eV range, showing decreasing trend with increasing concentration of TeO2. The emission spectra shows four emission peaks under 378 nm excitation centered at 486, 545, 590 and 620 nm because of the transition from 5D4 state to 7FJ (where, J = 6, 5, 4, 3) lower levels. Whereas the intensity decreases with increasing concentration of TeO2, indicating that the non-radiative energy transfer through cross relaxation (CR) increases with increasing concentration of TeO2. The color coordinates for all studied glasses fall in green region and were (x = 0.304, y = 0.605). The CCT obtained value for all prepared glasses is 6000 K. Above study suggests that these glasses can be potentially used in green light LEDs and in other solid state lighting applications.","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 1","pages":"36 - 46"},"PeriodicalIF":0.8,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141519224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Na+ Ions on the Mechanical Properties of Lithium Aluminosilicate Glass Na+ 离子对硅酸铝锂玻璃机械特性的影响

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S108765962360076X

Yanhang Wang, Lei Liu, Min Liu, Xianzi Li, Zhenyuan Zhang, Jiayu Liu, Xianying Shao, Yuebo Hu

{"title":"Effect of Na+ Ions on the Mechanical Properties of Lithium Aluminosilicate Glass","authors":"Yanhang Wang, Lei Liu, Min Liu, Xianzi Li, Zhenyuan Zhang, Jiayu Liu, Xianying Shao, Yuebo Hu","doi":"10.1134/S108765962360076X","DOIUrl":"10.1134/S108765962360076X","url":null,"abstract":"A series of lithium aluminosilicate glasses with the composition of 70SiO2–10Al2O3–5K2O–15Li2O–xNaCl (x = 0.5, 1.5, 2.5, 3.5 and 4.5 wt %) were prepared by the melt-quenching method. The effect of NaCl addition on mechanical properties was assessed. It was found that both the glass density and the hardness decreased with increasing content of NaCl from 0.5 to 3.5 wt %. Interestingly, Vickers hardness of the glass increased when NaCl content increased by 4.5 wt %. Raman test results show that NBO/T in the glass increases with NaCl, that is, the decrease of the degree of polymerization of the glass network due to the breaking of Si–O–Si bonds. Since the Si–O–Si covalent bond is the strongest bond in the silicate glass, the glass structure tends to be depolymerized, and the density and Vickers hardness decrease. Thus, we attribute the hardness increasing at 4.5 wt % NaCl addition to the fact that Na+ enters the network pores acting as network modifier.","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"49 1 supplement","pages":"S86 - S93"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heat-Resistant Electrical Insulating Organosilicate Coatings 耐热电绝缘有机硅涂料

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S1087659623601053

T. A. Kochina, G. S. Buslaev, A. V. Smeshko

引用次数: 0

Cluster Self-Organization of Intermetallic Systems: New Clusters-Precursors K15, K11, and K6 for the Self-Assembly of the Yb72Sn46-tP118 Crystal Structure 金属间体系的团簇自组织：用于 Yb72Sn46-tP118 晶体结构自组装的新簇-前体 K15、K11 和 K6

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S1087659623601016

V. Ya. Shevchenko, G. D. Ilyushin

{"title":"Cluster Self-Organization of Intermetallic Systems: New Clusters-Precursors K15, K11, and K6 for the Self-Assembly of the Yb72Sn46-tP118 Crystal Structure","authors":"V. Ya. Shevchenko, G. D. Ilyushin","doi":"10.1134/S1087659623601016","DOIUrl":"10.1134/S1087659623601016","url":null,"abstract":"The combinatorial-topological analysis and self-assembly of crystal structures of Yb72Sn46-tP118 (a = 11.076 Å, c = 36.933 Å, V = 4530.86 Å3, pr. group P4/mbm) intermetallic compounds is modeled using computer methods (the ToposPro software program). For the crystal structure of Yb72Sn46-tP118, 195 variants of a cluster representation of a 3D atomic grid with 5 (24 variants), 6 (86 variants), and 7 (85 variants) structural units are established. The variant of the fastest self-assembly involving three types of clusters-precursors forming layers of octahedra K6 = 0@6(Yb4Sn2) with symmetry g = 4/m, from polyhedra K11 = Sn@10(Yb8Sn2) with symmetry g = –1, and polyhedra K15 = Yb@14(Yb10Sn4) with symmetry g = 2 mm, as well as Yb and Sn spacer atoms, is considered. The symmetry and topological code of the processes of the self-assembly of 3D structures from clusters-precursors are reconstructed in the following form: primary chain → layer → framework.","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"49 1 supplement","pages":"S8 - S16"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140885230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of Ceramic Composites by Microwave Sintering 用微波烧结法制造陶瓷复合材料

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S108765962360093X

L. P. Mezentseva, M. V. Keskinova, A. V. Osipov, M. M. Sychov

{"title":"Fabrication of Ceramic Composites by Microwave Sintering","authors":"L. P. Mezentseva, M. V. Keskinova, A. V. Osipov, M. M. Sychov","doi":"10.1134/S108765962360093X","DOIUrl":"10.1134/S108765962360093X","url":null,"abstract":"To prepare 0.5LaPO4–0.5ZrO2 and 0.5LaPO4–0.5Y2O3 ceramic composites, a microwave assisted sol-gel procedure for the synthesis of nanosized 0.5LaPO4·nH2O–0.5ZrO(OH)2 and 0.5LaPO4· nH2O–0.5Y(OH)3 precursor powders was developed. Ceramic composites were prepared by microwave sintering of powders at 1100°C after preliminary heat treatment of precursor powders at 850°C, as well as by conventional stepwise sintering at 1000, 1100 and 1200°C for 24 h. The unit cell parameters of monoclinic LaPO4 were calculated depending on sintering method and temperature. The values of specific surface area of the samples, Vickers microhardness, and thermal conductivity were determined; fracture surface of ceramic samples was studied. Such a complex study of 0.5LaPO4–0.5ZrO2 and 0.5LaPO4–0.5Y2O3 composites is presented for the first time. The influence of sintering method, temperature and addition of zirconia and yttria to LaPO4 on the resulting composite’s properties, phase composition and type of ceramic fracture surface is discussed.","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"49 1 supplement","pages":"S54 - S65"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compositional Deformations, Absorption Spectroscopy, and Low-Temperature X-Ray Diffraction of Sr1 – xBaxBi2B2O7 Solid Solutions Sr1 - xBaxBi2B2O7 固溶体的成分变形、吸收光谱和低温 X 射线衍射

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S1087659623600990

A. P. Shablinskii, R. S. Bubnova, A. V. Povolotskii, S. K. Filatov

引用次数: 0

Composite Materials Based on Polytetrafluoroethylene with SiO2 and BaTiO3 Inorganic Fillers 基于聚四氟乙烯与 SiO2 和 BaTiO3 无机填料的复合材料

IF 0.8 4区材料科学

Glass Physics and Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S1087659623601089

A. V. Tumarkin, N. G. Tyurnina, Z. G. Tyurnina, O. Y. Sinelshchikova, D. I. Tsygankova, A. G. Gagarin, A. R. Karamov, A. Bogdan, E. A. Balabanova

{"title":"Composite Materials Based on Polytetrafluoroethylene with SiO2 and BaTiO3 Inorganic Fillers","authors":"A. V. Tumarkin, N. G. Tyurnina, Z. G. Tyurnina, O. Y. Sinelshchikova, D. I. Tsygankova, A. G. Gagarin, A. R. Karamov, A. Bogdan, E. A. Balabanova","doi":"10.1134/S1087659623601089","DOIUrl":"10.1134/S1087659623601089","url":null,"abstract":"Polymer dielectric composites consisting of polytetrafluoroethylene, silicon dioxide and barium titanate mixed in various proportions were successfully synthesized by low-temperature sintering. The structure of the obtained composite samples was studied by the X-ray diffraction, the electron microscopy, and the weight method. Electrical characteristics (dielectric permittivity and losses) of samples were investigated at a frequency of 1 MHz. According to structural analysis, the synthesized samples are a mixture of amorphous polytetrafluoroethylene and silicon dioxide, and crystalline ferroelectric BaTiO3, the ratio of which determines the electrical properties of the composites. Depending on the content of barium titanate, the studied samples show a permittivity from 4 to 6.5 with a dielectric loss level of 0.06–0.14. It is shown that the significant influence on the dielectric properties of the polytetrafluoroethylene/silicon dioxide/barium titanate system is exerted by heat treatment modes.","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"49 1 supplement","pages":"S94 - S101"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0