Glass Physics and Chemistry最新文献

{"title":"Preparation and Properties of Al2O3–SiO2 Aerogel Composite Mullite Fiber Felt","authors":"Sihao Jian,&nbsp;Chenkang Xia,&nbsp;Mingyuan Hao,&nbsp;Weihai Liu,&nbsp;Chao Ma,&nbsp;Yang Miao","doi":"10.1134/S108765962460039X","DOIUrl":"10.1134/S108765962460039X","url":null,"abstract":"<p>Silica aerogel has rec eived more and more attention in the field of thermal insulation. However, the poor mechanical properties and high temperature instability of pure silica aerogels seriously restrict the development and application of silica aerogels. Fiber reinforcement is an effective way to improve the mechanical properties of silica aerogels. In this paper, Al₂O₃–SiO₂ aerogel was compounded with mullite fiber to prepare silicon–aluminum aerogel fiber felt. When the strain value reaches 30%, the compressive strength of the fiber felt with aerogel content of 50.1 wt % reaches 0.21 MPa, and the thermal conductivity of fiber felt decreases from 0.0425 to 0.0322 W/m K when the aerogel content increases to 50.1 wt %. The thermal insulation performance test of fiber felt also showed that the addition of aerogel could significantly improve the heat insulation of fiber felt, and the cold surface temperature of fiber felt was only about 33°C when the flame exceeding 1000°C calcined the fiber felt for 10 s. This work provides a simple solution to prepare aerogel/nanofiber felt with good mechanical properties and low thermal insulation. Highlights: silicon–aluminum composite aerogel felt (AS/ASNFAs) has been prepared by sol-gel and impregnation method, AS/ASNFAs has good mechanical properties (the compressive strength reaches 0.21 MPa) and thermal insulation (0.0322 W/m K), AS/ASNFAs has good flame retardancy, and it remains stable after being burned at 1000 degrees butane for 10 min.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 5","pages":"511 - 520"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676398","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}

{"title":"Dependence of Poisson’s Ratio on Composition of “IDEAL” Diamond–Carbide Silicon Composites","authors":"V. Ya. Shevchenko,&nbsp;S. N. Perevislov,&nbsp;A. G. Chekuryaev,&nbsp;A. S. Dolgin,&nbsp;S. P. Bogdanov,&nbsp;M. M. Sychev","doi":"10.1134/S1087659624600613","DOIUrl":"10.1134/S1087659624600613","url":null,"abstract":"<p>For the first time, the dependence of Poisson’s ratio of the diamond–silicon carbide composite “IDEAL” is studied in a wide range of industrial diamond grain sizes ranging from nanometers to hundreds of micrometers. The deformation mechanism of a body consisting of particles with different coefficients of volumetric thermal expansion is discussed.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 5","pages":"461 - 465"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676399","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}

{"title":"Thermal Expansion of Oxoborogermanate Sm14(GeO4)2(BO3)6O8","authors":"N. V. Sukachev,&nbsp;A. P. Shablinskii,&nbsp;M. G. Krzhizhanovskaya,&nbsp;R. S. Bubnova","doi":"10.1134/S1087659624600650","DOIUrl":"10.1134/S1087659624600650","url":null,"abstract":"<p>Thermal expansion of samarium oxoborogermanate Sm₁₄(GeO₄)₂(BO₃)₆O₈ is studied by the method of high temperature powder X-ray diffraction in the temperature range of 30–1200°C. The coefficients of thermal expansion are calculated: α₁₁ = 9.59(12), α_c = 7.56(13), α_<i>V</i> = 26.74(30) × 10^–6°C^–1 at 30°C; and α_<i>a</i> = 14.44(12), α_c = 10.74(13), α_<i>V</i> = 39.61(28) × 10^–6 °C^–1 at 1200°C. A structural interpretation of the anisotropy of thermal expansion is carried out. With increasing temperature, the degree of anisotropy remains practically unchanged, the structure expands minimally along the <i>c</i> axis, and maximally in the <i>ab</i> plane, perpendicular to the preferred orientation of the BO₃ triangles in the crystal structure. The melting point of Sm₁₄(GeO₄)₂(BO₃)₆O₈ is clarified.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 6","pages":"713 - 718"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676279","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}

{"title":"Ideal Ceramics: Diamond–Silicon Carbide Composite for Lightweight Ceramic Protection","authors":"V. Ya. Shevchenko,&nbsp;S. V. Balabanov,&nbsp;S. N. Perevislov,&nbsp;M. M. Sychev,&nbsp;A. G. Chekuryaev","doi":"10.1134/S1087659624600741","DOIUrl":"10.1134/S1087659624600741","url":null,"abstract":"<p>This paper examines the protective properties of two-layer protective panels based on the diamond–silicon carbide ceramic material “Ideal” in comparison with a panel containing corundum tiles. For the first time, the fractional composition of fragments formed after the dynamic testing of panels is assessed and the total surface energy of the resulting small fragments is determined. It is shown that Ideal ceramics are close in terms of properties to ideally brittle material, as a result of which the effective dissipation of kinetic energy and destruction of the indenter are ensured. It is established that during the brittle fracture of Ideal ceramics, the formation of transcrystalline cracks is observed, which proves the high level of strength of interphase bonds in the material.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 6","pages":"609 - 613"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676406","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}

{"title":"Thermal Stability, Mechanical and Optical Properties of Er/Yb Co-Doped La2O3–Al2O3–ZrO2–TiO2 Glasses Prepared by Containerless Aerodynamic Levitation Technique","authors":"Qiushi Wang,&nbsp;Bijun Fang,&nbsp;Kaicheng Ma,&nbsp;Jianding Yu","doi":"10.1134/S1087659623600916","DOIUrl":"10.1134/S1087659623600916","url":null,"abstract":"<p>A series of La₂O₃–Al₂O₃–ZrO₂–TiO₂ glasses co-doped with Er³⁺ and Yb³⁺ ions ([30 – (30/88)(<i>x + y</i>)] La₂O₃–[58 – (58/88)(<i>x + y</i>)]Al₂O₃–4ZrO₂–8TiO₂, <i>x</i> = 2 mol %, and <i>y</i> = 4, 8, 12, 16, 20 mol %, abbreviated as LAZT: <i>x</i>Er³⁺/<i>y</i>Yb³⁺) were synthesized using a containerless aerodynamic levitation technique. The amorphous nature, thermal stability, mechanical properties, elemental distribution uniformity, optical transmittance, and refractive index dispersion were characterized. The prepared LAZT: <i>x</i>Er³⁺/<i>y</i>Yb³⁺ glasses exhibit homogeneous distribution of all elements, exceptional thermal stability (glass transition temperature <i>T</i>_g &gt; 850°C), superior mechanical properties, high refractive index (~1.9) and Abbe number (&gt;40). The glass-forming ability of the system, initially increasing and then decreasing with increasing the Yb³⁺ concentration, is overall below 100°C, which is relatively poor, and highlights the advantage of containerless technique in preparing the LAZT-based glasses. The above results show that the LAZT: <i>x</i>Er³⁺/<i>y</i>Yb³⁺ glasses prepared by the containerless technique are suitable for optical research, practical industrial and up-conversion luminescence applications.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 5","pages":"466 - 475"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676502","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}

{"title":"Influence of Reinforcing Fillers on the Mechanical Characteristics of Thermoelastoplastic Elastomers Developed for 3D Printing","authors":"M. V. Timoshenko,&nbsp;M. V. Lisyanskaya,&nbsp;M. M. Sychev,&nbsp;V. P. Britov","doi":"10.1134/S1087659624600777","DOIUrl":"10.1134/S1087659624600777","url":null,"abstract":"<p>The influence of reinforcing fillers of different structures on the physical and mechanical characteristics of thermoplastic elastomer (TPE) based on butadiene-styrene elastomer is studied with the aim of further application to additive technologies for the production of elastic materials of a complex geometry. The optimal concentrations for graphene and carbon nanotubes (CNTs) are selected to achieve the maximum reinforcement effect. It is noted that by introducing a combined filler into a polymer matrix, it is possible to obtain a synergistic effect and achieve higher physical and mechanical characteristics due to the different structure of the filler. It is shown that the use of 3D printing with nanoreinforced material allows achieving better physical and mechanical characteristics compared to the standard molding methods.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 6","pages":"695 - 704"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676282","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}

{"title":"Biocidal Properties of Superhydrophobic Coating Based on Carbon Nanotube Xerogel","authors":"S. N. Kapustin,&nbsp;Yu. V. Tsykareva,&nbsp;V. I. Voshchikov,&nbsp;D. Yu. Vlasov,&nbsp;M. S. Zelenskaya","doi":"10.1134/S1087659624601369","DOIUrl":"10.1134/S1087659624601369","url":null,"abstract":"<p>The creation of a multifunctional coating based on carbon nanomaterials, in particular one with protective biocidal properties, is considered a promising direction. The protection of material surfaces from destruction by micromycetes-destructors is of particular interest. The study presents data on the interaction of nanomaterials of the Taunit-M brand (multiwalled carbon nanotubes), onion-shaped carbon nanostructures, and Tuball (single-walled carbon nanotubes) with micromycetes-destructors. The aim of this paper is to study the influence of these materials used in the coating composition on the processes of surface overgrowth by micromycetes-destructors. The growth of the <i>Penicillium chrysogenum</i> strain (Cs/21) and <i>Aspergillus niger</i> strain (Ch4/07) on pure carbon nanotubes, nanotubes functionalized with –OH, –COOH, and –CONH₂ groups, as well as carbon nanotubes decorated with onion-shaped carbon nanostructures, detonation nanodiamonds (DNDs), and titanium dioxide nanocrystals, is studied. The samples are made in the form of a superhydrophobic coating of nanoparticle-based xerogel. The highest resistance is demonstrated by coatings made of functionalized multiwalled carbon nanotubes of the Taunit-M brand with –OH, –COOH and CONH₂ groups, as well as those decorated with titanium dioxide and DNDs. The development of micromycetes on their surface is absent in all test variants. These coatings do not contain food sources for micromycetes, but contain components with biocidal properties. Thus, they can be considered biostable. The studied carbon nanomaterials are proposed to be used for the organization of protective superhydrophobic coatings, since they are produced in industrial quantities and are easily accessible for comparative studies.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 6","pages":"705 - 712"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676280","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}

{"title":"Plastic Semiconductor Solid Solutions Ag2S–Ag2Se","authors":"Yu. S. Tveryanovich,&nbsp;E. V. Smirnov,&nbsp;A. S. Tveryanovich,&nbsp;O. V. Glumov,&nbsp;O. V. Tolochko,&nbsp;I. A. Kasatkin,&nbsp;V. V. Tomaev,&nbsp;A. A. Abramovich","doi":"10.1134/S1087659624600522","DOIUrl":"10.1134/S1087659624600522","url":null,"abstract":"<p>Semiconductor solid solutions in the Ag₂S–Ag₂Se system are studied. It is shown that monoclinic solid solutions based on Ag₂S have a plasticity exceeding that of silver sulfide and selenide. The possibility of obtaining wire and foil from them by cold rolling is demonstrated. The concentration dependencies of the optical band gap and the Seebeck coefficient are studied. It is shown that intensive deformation (cold rolling) does not lead to a change in the parameters of the temperature dependencies of the electrical conductivity.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 5","pages":"496 - 503"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676461","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}

{"title":"The Role of the Density of the Crown Group of Optical Glasses in the Formation of Their Quantitative Characteristics of X-Ray and Gamma Radiation Attenuation","authors":"V. I. Arbuzov","doi":"10.1134/S1087659624601229","DOIUrl":"10.1134/S1087659624601229","url":null,"abstract":"<p>The dependence of the linear coefficients of X-ray and gamma radiation attenuation (LCRA) is studied in the energy range of quantum energies, <i>E</i>, from 0.2 to 3.0 MeV by optical glasses of the crown group on their density when it changes from 2.21 to 4.61 g/cm³. Both the published data on the LCRA of glasses and the data obtained in this study are used as the basis for this paper. For this, the values of the mass coefficients of radiation attenuation (MCRA) of oxides used in the production of crown glasses are calculated. It is established that the basic oxides (SiO₂, B₂O₃, P₂O₅, Na₂O, K₂O, CaO, ZnO, Al₂O₃), which are included in all types of crown glasses (LK, K, FK, TFK, BK, TK, STK) are characterized by a relatively weak dependence of MCRA on <i>E</i>. In contrast, the heavier oxides (PbO, Ta₂O₅, La₂O₃, BaO, CdO, Y₂O₃, ZrO₂), used to obtain BK, FK, TFK, TK, and STK glasses of certain grades, demonstrate a strong dependence of MCRA on <i>E</i> in the energy range from 0.2 to about 1.0 MeV, but in the region of the more high energy quanta, close to that for basic oxides. It is shown that for <i>E</i> values of 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 1.0, 1.5, 2.0, and 3.0 MeV, the LCRA values for a wide range of glasses of the crown group are clearly described by linear dependencies on density, whose inclination angles decrease with the growth of <i>E</i>. Equations describing these straight lines are derived, which make it possible to accurately calculate the LCRA of glasses from their density. At the same time, with the <i>E</i> values changing from 0.2 to 0.4 (0.5) MeV, some glasses of the BK, TK, and STK types have lower LCRA values than those which would be expected if their LCRA values were located on these lines. These deviations are explained by the difference in the nomenclature and concentrations of heavy oxides in these glasses and in the glasses closest to them in density whose LCRA values fit well on the straight lines. For these glasses, at <i>E</i> ranging from 0.6 to 3.0 MeV, no deviations of the LCRA values from straight lines are observed.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 6","pages":"614 - 621"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676452","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}

{"title":"Sol-Gel Synthesis of Powders for the Fabrication of Ceramic Composites Based on Zircon in a Two-Step Microreactor with Intensively Swirling Flows of Reagent","authors":"V. L. Ugolkov,&nbsp;Yu. S. Kudryashova,&nbsp;A. V. Osipov,&nbsp;L. P. Mezentseva,&nbsp;I. V. Makusheva,&nbsp;R. Sh. Abiev","doi":"10.1134/S108765962460114X","DOIUrl":"10.1134/S108765962460114X","url":null,"abstract":"<p>Sol-gel synthesis of precursor powders of zircon, zirconium oxide and a composite based on them is performed in two ways, i.e., by reverse precipitation and the microreactor technique in a two-step microreactor with intensively swirling flows. The results of synthesis at all stages of precursor powders (1 ‒ <i>х</i>)(H₂SiO₃‒ZrO(OH)₂)‒<i>х</i>ZrO(OH)₂ were compared, i.e., after calcination at 850°C and after sintering in the 1000‒1300°C temperature range. The thermal behavior of the initial nanosized compositions has been studied by differential scanning calorimetry and thermogravimetry, and dilatometry. The thermal coefficients of linear expansion of ceramic samples were estimated. The microhardness values for the obtained ceramic composites with different prehistories and thermal conductivity results are given.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 5","pages":"533 - 545"},"PeriodicalIF":0.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676277","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}