International Journal of Applied Glass Science最新文献_第7页

An insight into the thermal processability of highly bioactive borosilicate glasses through kinetic approach 用动力学方法研究高活性硼硅酸盐玻璃的热加工性能

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-03-31 DOI: 10.1111/ijag.16633

Anustup Chakraborty, Subhadip Bodhak, Atiar Rahaman Molla, Kalyandurg Annapurna, Kaushik Biswas

{"title":"An insight into the thermal processability of highly bioactive borosilicate glasses through kinetic approach","authors":"Anustup Chakraborty, Subhadip Bodhak, Atiar Rahaman Molla, Kalyandurg Annapurna, Kaushik Biswas","doi":"10.1111/ijag.16633","DOIUrl":"10.1111/ijag.16633","url":null,"abstract":"The paucity of crystallization resistant bioactive glasses with desired biological functions stands as a bottleneck toward the fabrication of various biomedical constructs such as amorphous coatings, scaffolds, and fibers for advanced tissue engineering applications. In this context, a series of borosilicate-based bioactive glasses with a range of compositions: (53.88 − x)SiO2–21.7Na2O–21.7CaO–1.7P2O5–xB2O3 (mol%) where x = 0, 13.47, 22.45, 31.43, and 40.41 were prepared to address such limitation. The glasses were primarily investigated for their potential to be processed into amorphous scaffolds through evaluation of crystallization kinetics, sintering behavior, and viscosity–temperature dependence. The inclusion of B2O3 gradually reduces the activation energy of crystallization (Ea), according to the prediction from different kinetic models, whereas Friedman's model-free method unraveled the variation in Ea as crystallization progresses. The crystallization event is further elucidated by obtaining the Avrami parameter (n) and dimensionality (m) through Matusita–Sakka equation. The optimization of the sintering schedule for amorphous scaffold preparation was accomplished by exploiting isothermal prediction from Avrami–Erofeev model. Moreover, viscosity–temperature relationship for the studied glasses was established to identify the processing window for drawing and sintering. This study proposes a comprehensive approach adopting theoretical models to elucidate suitable high-temperature process parameters of bioactive glasses avoiding devitrification.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 4","pages":"534-548"},"PeriodicalIF":2.1,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42078408","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

Effect of material properties on batch-to-glass conversion kinetics 材料性质对批料-玻璃转化动力学的影响

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-03-23 DOI: 10.1111/ijag.16631

Pavel Ferkl, Pavel Hrma, Jaroslav Kloužek, Albert A. Kruger, Richard Pokorný

引用次数: 0

Towards controllable material removal of glass‐ceramic surface for low‐deformation machining 面向低变形加工的可控玻璃陶瓷表面材料去除

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-03-15 DOI: 10.1111/ijag.16630

Huaicheng Zhou, Chengqiang Feng, Yu Lin, Jian Gao, Bingjun Yu, Li Qian

引用次数: 0

Toward controllable material removal of glass–ceramic surface for low-deformation machining 实现低变形加工中玻璃-陶瓷表面的可控材料去除

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-03-15 DOI: 10.1111/ijag.16630

Huaicheng Zhou, Chengqiang Feng, Yu Lin, Jian Gao, Bingjun Yu, Linmao Qian

{"title":"Toward controllable material removal of glass–ceramic surface for low-deformation machining","authors":"Huaicheng Zhou, Chengqiang Feng, Yu Lin, Jian Gao, Bingjun Yu, Linmao Qian","doi":"10.1111/ijag.16630","DOIUrl":"https://doi.org/10.1111/ijag.16630","url":null,"abstract":"Due to its extremely high optical uniformity and excellent hot stability, glass–ceramic serves as a key material for ultraprecision imaging of lithography lens, and low-deformation machining is of significance for achieving high-quality surface. Aiming at controllable processing, the annealing of different nanoscratches on glass–ceramic was investigated for revealing the mechanism of material removal and damage repair. The volume change of the single-pass nanoscratch under various normal loads and sliding velocities before and after the annealing was calculated for quantifying the contribution of shear flow, densification, and residual stress to the material removal, respectively. It is found that ductile removal under high normal load or low sliding velocity is dominated by shear flow, thereby improving removal efficiency and reducing machining deformation and defects caused by densification and residual stress. The changes of microstructures beneath the scratches before and after annealing further reveal that the excess processing energy will be absorbed in glass–crystal interface and form micro-cracks on crystal surface. For comparison, brittle removal under variable cycles was simulated by multi-pass nanoscratches, and it reveals that the shear flow ratio raises gradually with the increase of cycle number. These findings provide theoretical guidance for ultraprecision processing of glass–ceramic surfaces.","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 4","pages":"549-558"},"PeriodicalIF":2.1,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50133710","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

Glass transition temperature of low-activity waste nuclear glasses 低活度废核玻璃的玻璃化转变温度

IF 2.1 3区材料科学

International Journal of Applied Glass Science Pub Date : 2023-03-08 DOI: 10.1111/ijag.16629

Jaime L. George, Pavel Ferkl, Jose Marcial, Tongan Jin, Pavel Hrma, Albert A. Kruger

引用次数: 1

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