International Journal of Applied Glass Science最新文献_第9页

Insights on surface analysis techniques to study glass primary packaging 用表面分析技术研究玻璃初级包装

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-02-24 DOI: 10.1111/ijag.16628

Giovanna Pintori, Serena Panighello, Odra Pinato, Elti Cattaruzza

{"title":"Insights on surface analysis techniques to study glass primary packaging","authors":"Giovanna Pintori, Serena Panighello, Odra Pinato, Elti Cattaruzza","doi":"10.1111/ijag.16628","DOIUrl":"10.1111/ijag.16628","url":null,"abstract":"During the forming process of a vial by tubing glass, temperatures of up to 1200°C are applied to adjust the glass viscosity. This process causes the release of volatile components such as alkali borates. Consequently, the percentage of sodium and boron measured on the inner surface of the vial can be higher than that measured on the corresponding glass tube. This study aimed to characterize the inner surface of two different borosilicate glass tubes of type I before and after the vial forming process at the nanoscale level. Quantitative elemental analysis of the surface along the vertical axis of glass tubes and vials was performed by X-ray photoelectron spectroscopy, whereas the topographical investigation was carried out by scanning electron microscopy (SEM). In the near-bottom region of a vial, which is usually the area most prone to corrosion, the SEM micrographs showed the appearance of bulges on the surface. The latter were then analyzed by time-of-flight secondary ion mass spectrometry to characterize their molecular composition. The purpose of this work is to identify possible new strategies for faster identification of factors that eventually influence chemical resistance of pharmaceutical glasses and to provide useful information needed to improve industrial processes.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 3","pages":"468-479"},"PeriodicalIF":2.1,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43894858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Key melt properties for controlled synthesis of glass beads by aerodynamic levitation coupled to laser heating 气动悬浮-激光加热控制合成玻璃珠的关键熔体特性

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-02-23 DOI: 10.1111/ijag.16627

Jan Baborák, Maureen Yembele, Petr Vařák, Sandra Ory, Emmanuel Véron, Michael J. Pitcher, Mathieu Allix, Pavla Nekvindová, Alessio Zandonà

{"title":"Key melt properties for controlled synthesis of glass beads by aerodynamic levitation coupled to laser heating","authors":"Jan Baborák, Maureen Yembele, Petr Vařák, Sandra Ory, Emmanuel Véron, Michael J. Pitcher, Mathieu Allix, Pavla Nekvindová, Alessio Zandonà","doi":"10.1111/ijag.16627","DOIUrl":"10.1111/ijag.16627","url":null,"abstract":"Binary alkali silicate glasses were synthesized as beads by aerodynamic levitation coupled to laser heating to test the applicability of the method to this compositional range. While bubble-free lithium disilicate beads could be easily obtained, sodium and potassium silicates proved more challenging to melt without significant alkali evaporation: the final samples contained bubbles and exhibited compositional drifts compared to the starting stoichiometry, especially at high SiO2 content. The risk of volatilization from the melts was evaluated empirically: the volatility of each oxide component scaled to the ratio between its melting temperature Tm and the Tm of the target composition (revap), while the difference between such ratios (Δevap) provided a qualitative estimation of the risk of differential evaporation. The formulated approach enables to evaluate the suitability of aerodynamic levitation synthesis for a given target glass composition: while low melting temperature and low liquidus viscosity (η < 100 Pa s) represent the primary optimal conditions, more viscous materials can still be prepared without major compositional drifts using a more careful melting procedure, especially if revap and Δevap are minimized.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 3","pages":"455-467"},"PeriodicalIF":2.1,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijag.16627","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46703473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

An optical technique based on silicate glass sintering for temperature mapping 基于硅酸盐玻璃烧结的温度映射光学技术

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-01-21 DOI: 10.1111/ijag.16625

Noah Burke, Panagiotis Panoutsopoulos, Otto J. Gregory

{"title":"An optical technique based on silicate glass sintering for temperature mapping","authors":"Noah Burke, Panagiotis Panoutsopoulos, Otto J. Gregory","doi":"10.1111/ijag.16625","DOIUrl":"10.1111/ijag.16625","url":null,"abstract":"Thermal paints have been used for decades by the gas turbine engine community to map surface temperature with low resolution. A novel thermal paint based on the sintering of a lead-silicate glass powder was developed that can map maximum temperature with high resolution (±5°C) over a 60°C range beginning at the glass transition temperature (<math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>T</mi>\u0000 <mi>g</mi>\u0000 </msub>\u0000 <annotation>${T}_g$</annotation>\u0000 </semantics></math>). The paint exhibited excellent adhesion to nickel-based superalloy components due to similar coefficients of thermal expansion between the superalloy and glassy ceramic coating. An optical transition was qualitatively and quantitatively observed using scanning electron microscopy, ultraviolet-visible (UV-VIS) reflectance spectroscopy, and visual inspection. UV-VIS reflectance spectroscopy was used to confirm the optical transition observed by the naked eye and quantitatively assess the transition of the thermal paint with high resolution. This technique for obtaining high resolution experimental temperature maps can aid the performance, efficiency, and reliability of gas turbine engines.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 2","pages":"167-172"},"PeriodicalIF":2.1,"publicationDate":"2023-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46845693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 1

Structure and redox ratio of soda-lime-silica glasses with high iron oxide concentrations 高氧化铁浓度钠钙硅玻璃的结构和氧化还原率

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-01-20 DOI: 10.1111/ijag.16626

Tina Tasheva, Ruzha Harizanova, Irena Mihailova, Zara Cherkezova-Zheleva, Daniela Paneva, Milena Nedkova, Christian Rüssel

{"title":"Structure and redox ratio of soda-lime-silica glasses with high iron oxide concentrations","authors":"Tina Tasheva, Ruzha Harizanova, Irena Mihailova, Zara Cherkezova-Zheleva, Daniela Paneva, Milena Nedkova, Christian Rüssel","doi":"10.1111/ijag.16626","DOIUrl":"10.1111/ijag.16626","url":null,"abstract":"The high temperature synthesis of glasses in the system (100-x)(0.16Na2O/0.10CaO/0.74SiO2)/xFe2O3, x = 5 ÷ 20 mol% is reported. For Fe2O3 concentrations ≤15 mol%, glasses are formed while the sample with 20 mol% crystallizes during cooling the melt. X-ray diffraction shows the crystallization of magnetite. The microstructure of the glass-crystalline sample is investigated by optical microscopy and scanning electron microscopy and two types of iron-rich crystals corresponding to magnetite and hematite are detected. The refractive indices as determined by the Becke line method are in the 1.567 - 1.639 range and. increase with increasing Fe2O3 concentration. The structure is characterized using Infra-red spectroscopy. The presence of symmetric stretching, asymmetric stretching and bending vibrations of Si-O-Si is detected and attributed to the occurrence of SiO4 tetrahedral units with varying numbers of nonbridging oxygens. Also, the increasing Fe2O3 concentration results in occurrence of Fe-O-Si bonds indicating the glass network depolymerization due to Fe2O3 addition. In all samples, the presence of Fe3+ and Fe2+ and the existence of iron ions in tetrahedral and octahedral coordination, as well as a very small amount of Fe0 and the precipitation of hematite and magnetite in the glass-crystalline sample is revealed by Mössbauer spectroscopy.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 3","pages":"445-454"},"PeriodicalIF":2.1,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48449742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 4

Study on gas trapping during precision glass molding of microlens array in a nitrogen atmosphere 氮气氛下微透镜阵列精密玻璃成型过程中的气体捕获研究

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-01-19 DOI: 10.1111/ijag.16624

Tianfeng Zhou, Zihao Zeng, Qian Yu, Jia Zhou, Peng Liu, Xibin Wang

{"title":"Study on gas trapping during precision glass molding of microlens array in a nitrogen atmosphere","authors":"Tianfeng Zhou, Zihao Zeng, Qian Yu, Jia Zhou, Peng Liu, Xibin Wang","doi":"10.1111/ijag.16624","DOIUrl":"10.1111/ijag.16624","url":null,"abstract":"Microlens arrays will suffer from filling defects due to trapped gas when molded in a nitrogen atmosphere by precision glass molding (PGM). In this paper, a multistep molding method is proposed to avoid gas trapping and improve the accuracy of a microlens array. The defect formation mechanism of the microlens array caused by the trapped gas is investigated, and the effect of the molding pressure on the defect formation is analyzed. A numerical model of the mold-nitrogen-glass interface at high temperature is established to evaluate the defect evolution, and the minimum number of PGM steps required to greatly reduce defects caused by the trapped gas is predicted. The numerical model is validated by a multistep PGM experiment of D-K59 glass material. The results show that a three-step PGM process significantly reduced the height of the defect. The difference between the height of the microlens unit and the depth of the mold is less than 0.4%. The molded microlens array has a peak-to-valley value of 0.38 μm and a surface roughness Ra of 3.5 nm. This work is instructive for the fabrication of high-precision glass microlens arrays.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 3","pages":"435-444"},"PeriodicalIF":2.1,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42533438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 3

Effect of draw temperature and flame polishing on birefringence of silica glass fiber 拉伸温度和火焰抛光对硅玻璃纤维双折射性能的影响

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-01-15 DOI: 10.1111/ijag.16623

Bronson D. Hausmann, Thomas W. Hawkins, John Ballato, Minoru Tomozawa

{"title":"Effect of draw temperature and flame polishing on birefringence of silica glass fiber","authors":"Bronson D. Hausmann, Thomas W. Hawkins, John Ballato, Minoru Tomozawa","doi":"10.1111/ijag.16623","DOIUrl":"10.1111/ijag.16623","url":null,"abstract":"Recently developed methods for high resolution birefringence measurement have been applied to distinguish between the surface and interior birefringence of silica glass fibers as a function of drawing temperature and initial surface condition for two types of silica glass with different water contents. Fibers were drawn in a water-free argon environment using graphite heating elements. It was found that fibers drawn at lower temperatures resulted in greater, interior birefringence, in agreement with previous reports. Additionally, it was found that in the case of low-water silica glass, flame polishing via oxygen–hydrogen mixture and drawn into fibers at lower temperature resulted in significant surface compressive stress upon drawing. This compressive stress may be the result of surface stress relaxation in silica glass that occurs in the presence of water during fiber drawing. In silica glass that contains greater internal hydroxyl impurity concentrations, the interior birefringence as well as the surface stress relaxation was significantly reduced under the same fiber drawing conditions. Characterization of such stress responses provides insight into the effects of common processing techniques as well as impresses the significance of preform processing for consistent fiber production.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 3","pages":"373-379"},"PeriodicalIF":2.1,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45387971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Case II diffusion of water in Na2O–3SiO2 glass: Constant tensile stress gradient at the diffusion interface 案例II水在Na2 O‐3SiO2玻璃中的扩散：扩散界面处的恒定拉伸应力梯度

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-01-13 DOI: 10.1111/ijag.16622

Bronson D. Hausmann, Minoru Tomozawa

引用次数: 0

Structural, spectroscopic, and radiation shielding properties of Pb2+-doped borate and phosphate glasses 掺pb2 +硼酸盐和磷酸盐玻璃的结构、光谱和辐射屏蔽性能

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2022-12-22 DOI: 10.1111/ijag.16621

Hosam Othman, Brian Topper, Hagar Elkholy, Doris Möncke

{"title":"Structural, spectroscopic, and radiation shielding properties of Pb2+-doped borate and phosphate glasses","authors":"Hosam Othman, Brian Topper, Hagar Elkholy, Doris Möncke","doi":"10.1111/ijag.16621","DOIUrl":"10.1111/ijag.16621","url":null,"abstract":"Lead-containing alkali/alkaline-earth borate and barium lead phosphate glasses were prepared by melt-quenching for a detailed investigation of the Pb2+ ions’ optical properties. UV–Vis absorption and photoluminescence spectroscopy reveal variations in the s–p transition of Pb2+, which are shown to correlate with the optical basicity of the host glass in both borates and phosphates. Pb2+ emission differs significantly for borate and phosphate glasses, as the nature of the charged sites available to accommodate Pb2+ cations vary. Optical basicity values were determined from the composition (Λth) and the measured refractive index (Λn). The UV-cutoff shifts toward higher wavelengths with increasing optical basicity and lead content. In borate glasses, the frequency of the stretching modes due to nonbridging oxygen atoms of trigonal metaborate species is identified to be inversely proportional to the excitation wavelength (directly proportional to the excitation energy) of Pb2+. Lead-containing alkali and alkaline-earth borate glasses show additional correlations between the Pb2+ emission wavelength and the weighted average of the field strength of the modifier(s). Complementary to the investigation of optical properties, radiation and neutron shielding parameters were calculated, suggesting the potential utility of some of the studied compositions for radiation shielding applications.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 3","pages":"408-424"},"PeriodicalIF":2.1,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42226571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Structural, thermal and DC conductivity properties of WO 3 –P 2 O 5 glasses doped with B 2 O 3 掺b2o3的wo3 - p2o5玻璃的结构、热性能和直流电导率

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2022-11-30 DOI: 10.1111/ijag.16620

Pershina Svetlana

引用次数: 0

Structural, thermal, and DC conductivity properties of WO3–P2O5 glasses doped with B2O3 掺杂B2O3的WO3–P2O5玻璃的结构、热和直流导电性能

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2022-11-30 DOI: 10.1111/ijag.16620

Svetlana V. Pershina

{"title":"Structural, thermal, and DC conductivity properties of WO3–P2O5 glasses doped with B2O3","authors":"Svetlana V. Pershina","doi":"10.1111/ijag.16620","DOIUrl":"https://doi.org/10.1111/ijag.16620","url":null,"abstract":"In this study, glasses in composition 70WO3–(30 − х)P2O5–хB2O3 (0 ≤ х ≤ 20 mol%) were prepared by melt quenching method. The glass formation, structure, and thermal and electrical properties are discussed. Homogeneous glasses were obtained at x = 0–10 mol% B2O3, whereas glasses with x = 15 and 20 contain microinclusions of WO3. The glass transition temperature decreases from 709 to 531.6°C with increasing B2O3 content, as well as the crystallization temperature and the thermal stability. The structure of the glasses was studied by Raman spectroscopy and infrared spectroscopy. The Raman spectra are characterized by a band near 995 cm−1, a broad band at 788–800 cm−1, and a band near 675 cm−1 ascribed to vibrations of W–O–P, W–O–W, and P–O–B bonds, respectively. The Fourier-transform infrared spectra show vibrational bands due to characteristic phosphate and borate groups. Tetrahedral BO4 units prevail in the structural network. The electrical conductivity of the glasses decreased with x content due to the growth of WO3-deficient regions.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 2","pages":"247-255"},"PeriodicalIF":2.1,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50148826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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