Journal of Non-crystalline Solids最新文献

{"title":"Rectifying fracture toughness of oxide glasses by eliminating chronological artifacts","authors":"Hemin Zhou ,&nbsp;Mikio Nagano ,&nbsp;Masari Watanabe ,&nbsp;Kazutaka Hayashi ,&nbsp;Satoshi Yoshida ,&nbsp;Haizheng Tao","doi":"10.1016/j.jnoncrysol.2025.123730","DOIUrl":"10.1016/j.jnoncrysol.2025.123730","url":null,"abstract":"<div><div>This study investigates systematic errors in fracture toughness (<em>K</em>_Ic) evaluation of oxide glasses using the Double Cleavage Drilled Compression (DCDC) method, primarily caused by discrepancies between set and actual frame intervals (SFI/AFI) during high-speed imaging. These timing inaccuracies distort crack growth velocity measurements, compromising <em>K</em>_Ic determination. A dual-validation correction protocol integrating image metadata extraction and independent chronometry was developed to quantify nonlinear AFI-SFI relationships and eliminate temporal artifacts. Experimental validation on soda-lime-silica glasses demonstrated a &gt; 50 % reduction in <em>K</em>_Ic measurement errors, achieving alignment with conventional methods (SEPB, CNB, SCF) and yielding high precision (standard deviation, <em>σ</em> &lt; 0.01 MPa·m^1/2). Further glass-ceramic testing confirmed the method's robustness, showing exceptional consistency (coefficient of variation, CV &lt; 1 %). The refined DCDC protocol enhances reproducibility, simplifies specimen preparation, and establishes a reliable framework for correlating glass composition with intrinsic fracture toughness, advancing the design of next-generation high-toughness glass materials.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"667 ","pages":"Article 123730"},"PeriodicalIF":3.5,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144886098","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}

{"title":"CuO doping tuned structural evolution, chemical durability and antibacterial activity of zinc phosphate glasses","authors":"Ruixin Guo ,&nbsp;Zhengkun Zhao ,&nbsp;Wei Deng ,&nbsp;Anirban Chakrabarti ,&nbsp;Kai Xu","doi":"10.1016/j.jnoncrysol.2025.123728","DOIUrl":"10.1016/j.jnoncrysol.2025.123728","url":null,"abstract":"<div><div>This work investigated the impact of small amounts of CuO on the Cu species, structure, chemical durability, and antibacterial activity of zinc phosphate glasses. Glasses with a composition of 42P₂O₅-30ZnO-20MgO-8Na₂O (mol%) doped with 0–2.0 mol% CuO were prepared using the traditional melt-quenching method. Experimental findings indicate that doping 0.1 mol% CuO leads to the dispersion of metallic (Cu⁰) particles exceeding 100 nm in size within the glass. These large Cu⁰ particles can cause localized distortions in nearby phosphorus structural units, resulting in depolymerization of the glass network, which subsequently deteriorates the chemical durability of the glass matrix. The depolymerization process facilitates the release of zinc, which can enhance the antibacterial properties of glass against <em>Escherichia coli</em>. Increasing the CuO content from 0.9–2.0 mol% resulted in the formation of mono- and divalent states of Cu (Cu⁺ and Cu²⁺), which appeared to enhance cross-linking between the phosphate units and gradually improved the chemical durability.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123728"},"PeriodicalIF":3.5,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879320","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}

{"title":"Microscopic exploration of interfacial and wetting properties of graphene/silica heterostructures","authors":"Xin Wang,&nbsp;Shuang Li,&nbsp;Zhijun Xu,&nbsp;Xiaoning Yang","doi":"10.1016/j.jnoncrysol.2025.123729","DOIUrl":"10.1016/j.jnoncrysol.2025.123729","url":null,"abstract":"<div><div>Graphene/silica heterostructures have shown potential applications in broad fields, in which achieving well-defined composite structures is essential for optimizing non-crystalline composite properties and enabling new applications. However, the interfacial structures and properties of graphene/silica and the associated functions of underlying amorphous surfaces are not thoroughly understood yet. Herein, molecular simulations were performed to systematically investigate the adhesion, detachment, and wettability of graphene on amorphous silica surfaces. We simulated and constructed actual materials-oriented amorphous silica substrates with controlled morphology. It is demonstrated that graphene on amorphous silica surfaces exhibits three distinct contact states: suspended, partially conformal, and highly conformal. It is remarkable to show extremely low adhesion strength for graphene suspended on silica surfaces. The influence of different contact modes on the graphene/silica wettability was fully revealed for the first time. Grand Canonical Monte Carlo simulations were conducted to generate adsorbed water layers on the hybrid graphene/silica structures. The interfacial behavior of graphene/silica was also disclosed under humidity conditions, and meanwhile, the dynamic process of water inserting into the hybrid interlayer was captured. Overall, our simulations provide insight into tuning the morphology and wettability of graphene through substrate patterning, potentially paving the way for the design and application of graphene/silica heterostructures.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123729"},"PeriodicalIF":3.5,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863551","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}

{"title":"The structural heterogeneity response and the STZ evolution in Zr-based metallic glass during nanoindentation creep","authors":"Bowen Li ,&nbsp;Guangkai Liao ,&nbsp;Kaikai Cao ,&nbsp;Zhenyan Xie ,&nbsp;Bin Li ,&nbsp;Zili Wang ,&nbsp;Yuejun Liu","doi":"10.1016/j.jnoncrysol.2025.123726","DOIUrl":"10.1016/j.jnoncrysol.2025.123726","url":null,"abstract":"<div><div>In this paper, the rheological behavior of the bulk metallic glass Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be₂₂ (Zr-BMG) was investigated by nanoindentation. Firstly, nanoindentation tests were conducted on Zr-BMG at different loading rates. Then the Maxwell-Voigt model was employed to model the creep behavior, the viscoelastic and viscoplastic deformations during the creep were separated to analyze, and the delay spectrum during the creep process was calculated. It was found that structural heterogeneity evolves dynamically at the nanoscale during nanoindentation creep. Finally, the size of the shear transition zone (STZ) during creep was calculated by the strain rate sensitivity (SRS) method. The results show that at higher loading rates, the viscoelastic units cannot fully relax, leading to transition into viscoplastic deformation. Zr-BMG has stronger deformation resistance at higher strain rates, which usually leads to a smaller STZ. Furthermore, STZ is more easily activated and evolves into a response of structural heterogeneity to external stimuli, and the material exhibits more obvious creep fluidity. The indentation creep mechanism is due to the deformation of the micro-shear domains in Zr-BMG, leading to the activation and expansion of defects, which ultimately irreversibly merge into larger defects, revealing the process of local atomic rearrangement and diffusion.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123726"},"PeriodicalIF":3.5,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852805","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}

{"title":"Effects of Mo addition on anti-corrosion and mechanical properties of Al coating deposited sintered Nd-Fe-B magnets","authors":"Yuzhao Xue ,&nbsp;Chuanxiao Peng ,&nbsp;YiYong Wang ,&nbsp;Xianrui Wang ,&nbsp;Hao Zhan ,&nbsp;Yang Luo ,&nbsp;Li Wang","doi":"10.1016/j.jnoncrysol.2025.123727","DOIUrl":"10.1016/j.jnoncrysol.2025.123727","url":null,"abstract":"<div><div>Due to the poor mechanical properties and insufficient corrosion resistance of Al coating on sintered Nd-Fe-B magnets, the effect of the addition of Mo as well as the ratio of Al and Mo during the co-deposition process are systematically investigated. The Al₇₅Mo₂₅ coating with the amorphous structure exhibits the superior corrosion resistance because of the flatter surface and dense passivation film, which cuts off the rapid propagation channel of the corrosion medium such as Cl^-. The corrosion current density of the Al₇₅Mo₂₅ coating reaches 6.1 × 10^-7 A·cm^-2, which is about one-third of the Al coating. Additionally, the coating demonstrates excellent mechanical properties, and the hardness of the coating increased from 0.41 GPa for the Al coating to 6.52 GPa. Furthermore, the amorphous coating does not compromise the magnetic properties of the Nd-Fe-B substrate. The results show that the addition Mo within limits can improve the anti-corrosion and mechanical properties of the Al coating. The work above clearly illustrates the practical value of the Al-Mo amorphous coating in improving the surface protection effect for the magnets. The work provides a promising way for improving the properties of Al coated sintered Nd-Fe-B magnets.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123727"},"PeriodicalIF":3.5,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858143","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}

{"title":"The conditions of the coincidence between viscosity obtained by the heating rate dependence of glass transition and the measured viscosity for amorphous alloys","authors":"Qian Gao,&nbsp;Junfeng Xu","doi":"10.1016/j.jnoncrysol.2025.123722","DOIUrl":"10.1016/j.jnoncrysol.2025.123722","url":null,"abstract":"<div><div>The conditions of the coincidence between viscosity <em>η</em>^τ(<em>T</em>) obtained by the heating rate dependence of glass transition and the measured viscosity <em>η</em>(<em>T</em>) are studied. It is found that <em>G_η</em>(<em>T</em>)/<em>G</em>₀ can be used to judge the degree of the coincidence between <em>η</em>^τ(<em>T</em>) and <em>η</em>(<em>T</em>), where <em>G_η</em>(<em>T</em>) and <em>G</em>₀ are <em>η</em>(<em>T</em>)/<em>τ</em>_trans(<em>T</em>) (transition time) and <em>η</em>₀/<em>τ</em>trans 0(the pre-exponential factor of <em>η</em>(<em>T</em>) and <em>τ</em>_trans(<em>T</em>)), respectively. <em>η</em>^τ(<em>T</em>) will be the same with <em>η</em>(<em>T</em>) in whole temperature range when <em>G_η</em>(<em>T</em>)/<em>G</em>₀ equals 1; Conversely, <em>η</em>^τ(<em>T</em>) will depart from <em>η</em>(<em>T</em>) when <em>G_η</em>(<em>T</em>)/<em>G</em>₀ does not equal 1. The greater the difference between <em>G_η</em>(<em>T</em>) and <em>G</em>₀ is, the greater the degree of underestimate or overestimate for <em>η</em>(<em>T</em>) is. The reason why ideal glass transition temperature <em>T</em>_g⁰ and strength parameter <em>D</em>_q obtained by <em>T</em>_g^onset(<em>q</em>_H) with three unrestricted fitting parameters depart from ideal glass transition temperature <em>T^η</em> 0 and strength parameter <em>D_η</em> obtained by viscosity results from the constant <em>A</em>_q of <em>T</em>_g^onset(<em>q</em>_H) equation is excessively less than the constant (<em>VG</em>_ηΔ<em>T</em>_g)/<em>N</em>_A<em>h</em>, where <em>N</em>_A, <em>h, V, G_η</em> and Δ<em>T</em>_g are Avogadro’s constant, Planck’s constant, the molar volume, a scaling factor and the width of the glass transition region.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123722"},"PeriodicalIF":3.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144841262","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}

{"title":"Impact of silicon and other contaminants on the melting process in photovoltaic glass recycling","authors":"Hiroyuki Inano ,&nbsp;Yasuhiro Akemoto ,&nbsp;Ken Asakura","doi":"10.1016/j.jnoncrysol.2025.123724","DOIUrl":"10.1016/j.jnoncrysol.2025.123724","url":null,"abstract":"<div><div>The global growth of photovoltaic (PV) power generation has led to an anticipated increase in the disposal of panels, with glass, which accounts for 76 % of panel weight, becoming a key focus for recycling efforts. However, the feasibility of glass melting recycling remains unclear. When recovered glass from PV panels is contaminated with silicon from the cells, it is hypothesized that Si may reduce glass component oxides during the glass melting process. This study investigates the reaction between PV panel glass and contaminants generated during its disassembly, especially antimony oxide in PV glass and Si contaminants during the glass melting recycling process. PV glass containing reagent that found in PV panel parts was subjected to high-temperature treatment, and the resulting samples were analyzed using X-ray diffraction. Additionally, redox reactions between glass-component oxides and these elements were investigated through chemical thermodynamics calculations. The results indicated that Cu turned the glass blue, and Si and Al turned it gray. An addition of 0.1 mass% Si turned the glass yellow, which is attributed to the reduction of sulfur oxide. With more Si added, antimony oxide was reduced and excess Si remained. The presence of Si induced defects during the melting process, highlighting the critical need to prevent Si contamination when recycling PV glass. These findings offer valuable insights into optimizing PV glass recovery methods for manufacturing various recycled products.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123724"},"PeriodicalIF":3.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144830065","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}

{"title":"Tailoring glass forming ability and coercivity in iron-based nanocrystalline alloys through machine learning-driven feature interpretation","authors":"Fuyao Yang ,&nbsp;Ning Zhang ,&nbsp;Aina He ,&nbsp;Bojun Zhang ,&nbsp;Yaqiang Dong ,&nbsp;Jiawei Li ,&nbsp;Qikui Man ,&nbsp;Wenjun Wang ,&nbsp;Yu Han ,&nbsp;Baogen Shen","doi":"10.1016/j.jnoncrysol.2025.123719","DOIUrl":"10.1016/j.jnoncrysol.2025.123719","url":null,"abstract":"<div><div>Nanocrystalline soft magnetic materials developed from precursors with high glass forming ability (GFA), combined with their low coercivity (<em>H</em>_c), are beneficial for advanced electronic devices. Herein, machine learning (ML) models with 519 original data and 22 features were developed for predicting GFA and <em>H</em>_c. Four-step feature screening was utilized to obtain important features predicting GFA, and top four features (e.g., VEC, VEC1, <em>c</em>_B, and Δ<em>T</em>) remained. Among three distinct ML algorithms, the XGBoost outperforms SVM and RF, achieving an AUC of 0.93. The accuracy of the classification model is up to 96.7 %. The SHAP analysis revealed that when the valance electron concentration (VEC) was below 7.29, the VEC excluding Fe, Ni, and Co elements (VEC1) was above 0.71, boron content (<em>c</em>_B) among 6.85 ∼ 11.54 at.%, and the crystallization temperature intervals (Δ<em>T</em>) above 121 °C, the precursors easily obtain fully amorphous structures. Three optimized alloys were designed by XGBoost and NSGA-II algorithm, exhibiting good GFA and low <em>H</em>_c of 1.34 ∼ 1.40 A/m. The errors between ML-predicted and experimental <em>H</em>_c values were lower values compared to those previously reported alloys, underscoring the reliability and robustness of the developed ML algorithm.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123719"},"PeriodicalIF":3.5,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144830068","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}

{"title":"Effective infrared fluorescence of highly doped Er3+ in tellurate glass","authors":"Mingyan Xiao ,&nbsp;Yu Yue ,&nbsp;Shicai Zhou ,&nbsp;Xiaoqi Dong","doi":"10.1016/j.jnoncrysol.2025.123725","DOIUrl":"10.1016/j.jnoncrysol.2025.123725","url":null,"abstract":"<div><div>The significant applications of Er³⁺-doped fiber lasers in the infrared spectral region have generated considerable research interest. However, the relatively low radiative efficiency of Er³⁺ ions and the optimization of glass host matrices remain pivotal challenges constraining the advancement of NIR/MIR laser technologies. A set of tellurite glasses containing Er³⁺ concentrations varying from 3.0 to 9.0 mol% was synthesized in this study. The structural vibrations within the glass matrix were analyzed using Raman and infrared spectroscopy. The TBE3 glass samples exhibited notable emission cross sections, measured at 1.44 × 10^–20 cm² at 1.5 µm and 1.81 × 10^–20 cm² at 2.7 µm. These results collectively suggest that the highly Er³⁺-doped tellurite glass developed in this work is a promising high-doping material for infrared lasers and holds potential for applications in near-infrared (NIR) and mid-infrared (MIR) optical devices.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123725"},"PeriodicalIF":3.5,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144827593","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}

{"title":"Intralaboratory calibration of the DSC shift-factor approach for melt viscosity determination: A case study on lead metasilicate glass","authors":"Danilo Di Genova ,&nbsp;Gabriele Giuliani ,&nbsp;Sumith Abeykoon ,&nbsp;Kajal Dadwal ,&nbsp;Suruchi Sharma ,&nbsp;Atul Khanna ,&nbsp;Alessio Zandonà ,&nbsp;Dmitry Bondar ,&nbsp;Stefanie Meyer ,&nbsp;Laura Calabrò ,&nbsp;Serena Dominijanni ,&nbsp;Joachim Deubener","doi":"10.1016/j.jnoncrysol.2025.123709","DOIUrl":"10.1016/j.jnoncrysol.2025.123709","url":null,"abstract":"<div><div>The differential scanning calorimetry (DSC) shift-factor approach provides a powerful tool for determining the shear viscosity of glass-forming melts across several orders of magnitude. Its accuracy, however, depends on the proper determination of the shift factor (<em>K</em>) – a process of establishing <em>K</em> by linking DSC data to viscometry, herein termed 'intralaboratory calibration' – which then connects the fictive temperature to viscosity. In this study, we determine <em>K</em> for lead metasilicate (PbSiO₃) glass by integrating conventional DSC, flash DSC, and ball penetration viscometry measurements on samples obtained from the same batch. Raman spectroscopy was employed to verify sample integrity before and after measurements.</div><div>Our results confirm the applicability of the DSC shift-factor approach, yielding shift factors of <em>K_onset</em> = 10.92 ± 0.04, <em>K_peak</em> = 9.41 ± 0.08, and <em>K_endset</em> = 8.71 ± 0.07. These findings underscore the importance of intralaboratory calibration in refining the DSC-based method for accurate viscosity determination in glass-forming systems.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123709"},"PeriodicalIF":3.5,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810560","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}