Pub Date : 2026-04-15Epub Date: 2026-02-05DOI: 10.1016/j.jnoncrysol.2026.124003
Jinxin Nie , Xibei Hou , Ruibo Li , Xuesong Li , Qiang Li , Baoan Sun
A significant improvement in the soft magnetic properties of Fe-based amorphous alloys can be achieved through high-temperature annealing, which effectively reduces residual stresses. However, annealing-induced structural relaxation depletes free volume in the amorphous alloy, leading to a significant reduction in toughness. In this work, we investigated the effect of ribbon width on transverse thickness uniformity in industrial Fe-based amorphous ribbons. To this end, we developed a simple and viable annealing strategy for low-temperature magnetic stabilization. This strategy maintains the toughness of the annealed ribbons at a level comparable to the as-quenched state. Additionally, the magnetic cores fabricated from these ribbons exhibit extremely low coercivity fluctuation. These findings provide a guiding heat treatment process for the application of Fe-based amorphous alloys in high-frequency motors.
{"title":"Magnetic stabilization and superior ductility through low-temperature annealing in industrial Fe-based amorphous alloys","authors":"Jinxin Nie , Xibei Hou , Ruibo Li , Xuesong Li , Qiang Li , Baoan Sun","doi":"10.1016/j.jnoncrysol.2026.124003","DOIUrl":"10.1016/j.jnoncrysol.2026.124003","url":null,"abstract":"<div><div>A significant improvement in the soft magnetic properties of Fe-based amorphous alloys can be achieved through high-temperature annealing, which effectively reduces residual stresses. However, annealing-induced structural relaxation depletes free volume in the amorphous alloy, leading to a significant reduction in toughness. In this work, we investigated the effect of ribbon width on transverse thickness uniformity in industrial Fe-based amorphous ribbons. To this end, we developed a simple and viable annealing strategy for low-temperature magnetic stabilization. This strategy maintains the toughness of the annealed ribbons at a level comparable to the as-quenched state. Additionally, the magnetic cores fabricated from these ribbons exhibit extremely low coercivity fluctuation. These findings provide a guiding heat treatment process for the application of Fe-based amorphous alloys in high-frequency motors.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"679 ","pages":"Article 124003"},"PeriodicalIF":3.5,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116396","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}
Pub Date : 2026-04-15Epub Date: 2026-02-11DOI: 10.1016/j.jnoncrysol.2026.124018
Di Liu , Ying Tian , Tingyang Chen , Shengjing Qiu , Liaolin Zhang , Junjie Zhang
In this paper, the physical properties of TeO2-BaONb2O5 glass doped with different concentrations of Er2O3 (named TBNE) were prepared and studied. Through the Differential Scanning calorimetry curves at different heating rates, the thermal properties such as the glass formation ability and thermal stability of the TBNE series of glasses were investigated. It was found that the formation ability and thermal stability of TBNE glass were relatively good. Additionally, the relationship between the glass transition temperature (Tg) and the heating rate (β) was investigated. The results showed that Tg increased linearly with increasing β for all samples. Furthermore, a higher Er2O3 concentration resulted in a higher Tg. Furthermore, the activation energies for glass transformation Eg and crystallization Ec were derived from three distinct theories. It was found that the activation energies computed by three methods were not significantly different. With the increase of Er2O3 concentration, Eg increased from 567.25 kJ/mol to 744.01 kJ/mol, and Ec decreased from 279.09 kJ/mol to 189.38 kJ/mol. In addition, the Avrami index (n) was obtained through two methods, and it was found that its value changed from n = 2 to n = 1 with the doping of Er2O3. This indicates that crystal growth mainly occurs through surface nucleation and one-dimensional growth.
{"title":"An analysis of the relationship between Er3+ concentration and thermodynamic characteristics in TeO2-BaO-Nb2O5 glass","authors":"Di Liu , Ying Tian , Tingyang Chen , Shengjing Qiu , Liaolin Zhang , Junjie Zhang","doi":"10.1016/j.jnoncrysol.2026.124018","DOIUrl":"10.1016/j.jnoncrysol.2026.124018","url":null,"abstract":"<div><div>In this paper, the physical properties of TeO<sub>2</sub>-BaO<img>Nb<sub>2</sub>O<sub>5</sub> glass doped with different concentrations of Er<sub>2</sub>O<sub>3</sub> (named TBNE) were prepared and studied. Through the Differential Scanning calorimetry curves at different heating rates, the thermal properties such as the glass formation ability and thermal stability of the TBNE series of glasses were investigated. It was found that the formation ability and thermal stability of TBNE glass were relatively good. Additionally, the relationship between the glass transition temperature (T<sub>g</sub>) and the heating rate (β) was investigated. The results showed that T<sub>g</sub> increased linearly with increasing β for all samples. Furthermore, a higher Er<sub>2</sub>O<sub>3</sub> concentration resulted in a higher T<sub>g</sub>. Furthermore, the activation energies for glass transformation E<sub>g</sub> and crystallization E<sub>c</sub> were derived from three distinct theories. It was found that the activation energies computed by three methods were not significantly different. With the increase of Er<sub>2</sub>O<sub>3</sub> concentration, E<sub>g</sub> increased from 567.25 kJ/mol to 744.01 kJ/mol, and E<sub>c</sub> decreased from 279.09 kJ/mol to 189.38 kJ/mol. In addition, the Avrami index (n) was obtained through two methods, and it was found that its value changed from <em>n</em> = 2 to <em>n</em> = 1 with the doping of Er<sub>2</sub>O<sub>3</sub>. This indicates that crystal growth mainly occurs through surface nucleation and one-dimensional growth.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"679 ","pages":"Article 124018"},"PeriodicalIF":3.5,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191425","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}
Pub Date : 2026-04-01Epub Date: 2026-02-02DOI: 10.1016/j.jnoncrysol.2026.123992
Mingji Gao, Ruidong Jia, Huajun Sun, Michael Ojovan, Guang Fang, Anirban Chakrabarti, Kai Xu
In-situ resource utilization (ISRU) of lunar regolith is essential for sustainable lunar infrastructure; however, conventional sintering and melting methods remain energy-intensive and operationally complex. This study reports the conversion of a basalt-based lunar regolith simulant into glass through high-temperature melt-quenching and its subsequent transformation into glass-ceramics through controlled heat treatment. The crystallization behavior, phase evolution, microstructure, and mechanical properties were systematically investigated. Differential scanning calorimetry and non-isothermal crystallization kinetics revealed a diffusion-controlled bulk crystal growth with progressively increasing nucleation rates. Heat treatments at 800–1000°C primarily produced augite-based glass-ceramics, while treatment at 1100°C favored the formation of anorthite as the dominant crystalline phase. Microstructural analysis revealed that lower heat-treatment temperatures (800–900°C) resulted in dense, uniformly distributed fine-grained microstructures, whereas higher temperatures led to grain coarsening and microcrack formation. Accordingly, the sample treated at 800°C for 40 h demonstrated optimal mechanical performance, achieving a compressive strength of 355 MPa, a Vickers hardness of approximately 8 GPa, and an elastic modulus of 84 GPa. These findings confirm that controlled crystallization of a melt-quenched lunar regolith simulant can produce high-performance glass-ceramics suitable for load-bearing lunar construction, emphasizing the potential of in-situ vitrification strategies for future lunar habitats.
{"title":"Making glass-ceramics from lunar regolith simulant: A study on the crystallization behavior and mechanical properties","authors":"Mingji Gao, Ruidong Jia, Huajun Sun, Michael Ojovan, Guang Fang, Anirban Chakrabarti, Kai Xu","doi":"10.1016/j.jnoncrysol.2026.123992","DOIUrl":"10.1016/j.jnoncrysol.2026.123992","url":null,"abstract":"<div><div>In-situ resource utilization (ISRU) of lunar regolith is essential for sustainable lunar infrastructure; however, conventional sintering and melting methods remain energy-intensive and operationally complex. This study reports the conversion of a basalt-based lunar regolith simulant into glass through high-temperature melt-quenching and its subsequent transformation into glass-ceramics through controlled heat treatment. The crystallization behavior, phase evolution, microstructure, and mechanical properties were systematically investigated. Differential scanning calorimetry and non-isothermal crystallization kinetics revealed a diffusion-controlled bulk crystal growth with progressively increasing nucleation rates. Heat treatments at 800–1000°C primarily produced augite-based glass-ceramics, while treatment at 1100°C favored the formation of anorthite as the dominant crystalline phase. Microstructural analysis revealed that lower heat-treatment temperatures (800–900°C) resulted in dense, uniformly distributed fine-grained microstructures, whereas higher temperatures led to grain coarsening and microcrack formation. Accordingly, the sample treated at 800°C for 40 h demonstrated optimal mechanical performance, achieving a compressive strength of 355 MPa, a Vickers hardness of approximately 8 GPa, and an elastic modulus of 84 GPa. These findings confirm that controlled crystallization of a melt-quenched lunar regolith simulant can produce high-performance glass-ceramics suitable for load-bearing lunar construction, emphasizing the potential of in-situ vitrification strategies for future lunar habitats.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"678 ","pages":"Article 123992"},"PeriodicalIF":3.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191341","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}
Pub Date : 2026-04-01Epub Date: 2026-01-30DOI: 10.1016/j.jnoncrysol.2026.123993
Jian-zhi Chen , Cheng-jun Ma , Tong-guang Zhai , Yuan-bin Zhang , Lu-lu Song
This paper presents a comprehensive review of the methods for evaluating the glass-forming ability (GFA) of Al-based amorphous alloys and the latest research progress. The evolution, structural features and preparation techniques of these alloys are first introduced, covering powder technologies such as gas atomization, centrifugal atomization and mechanical alloying, as well as ribbon, bulk and coating processes including single-roller melt spinning, copper-mold casting, thermal spraying and laser cladding. The assessment criteria of GFA are then discussed in detail, covering kinetic indicators—reduced glass-transition temperature Trg, super-cooled liquid region ΔTx, γ parameter and topological instability parameter λ-and thermodynamic indicators such as mixing enthalpy ΔHmix, mixing entropy ΔSmix, entropy–enthalpy ratio ε and their product PHS. Based on this, using the Al-Ni-Y-La quaternary system as an example, the influence of each element's percentage content on GFA was calculated and analyzed through thermodynamic equations. It was proposed that a high amorphous formation ability can be achieved when the atomic percentage of aluminum exceeds 80%, nickel content is controlled between 3% and 8%, and both yttrium and lanthanum contents are within the range of 4% to 8%.
{"title":"Preparation methods and glass formation capabilities of aluminum-based amorphous alloys","authors":"Jian-zhi Chen , Cheng-jun Ma , Tong-guang Zhai , Yuan-bin Zhang , Lu-lu Song","doi":"10.1016/j.jnoncrysol.2026.123993","DOIUrl":"10.1016/j.jnoncrysol.2026.123993","url":null,"abstract":"<div><div>This paper presents a comprehensive review of the methods for evaluating the glass-forming ability (GFA) of Al-based amorphous alloys and the latest research progress. The evolution, structural features and preparation techniques of these alloys are first introduced, covering powder technologies such as gas atomization, centrifugal atomization and mechanical alloying, as well as ribbon, bulk and coating processes including single-roller melt spinning, copper-mold casting, thermal spraying and laser cladding. The assessment criteria of GFA are then discussed in detail, covering kinetic indicators—reduced glass-transition temperature <em>T<sub>rg</sub></em>, super-cooled liquid region <em>ΔT<sub>x</sub>, γ</em> parameter and topological instability parameter <em>λ</em>-and thermodynamic indicators such as mixing enthalpy <em>ΔH<sub>mix</sub></em>, mixing entropy <em>ΔS<sub>mix</sub></em>, entropy–enthalpy ratio ε and their product <em>P<sub>HS</sub></em>. Based on this, using the Al-Ni-Y-La quaternary system as an example, the influence of each element's percentage content on GFA was calculated and analyzed through thermodynamic equations. It was proposed that a high amorphous formation ability can be achieved when the atomic percentage of aluminum exceeds 80%, nickel content is controlled between 3% and 8%, and both yttrium and lanthanum contents are within the range of 4% to 8%.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"678 ","pages":"Article 123993"},"PeriodicalIF":3.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081858","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}
Pub Date : 2026-04-01Epub Date: 2026-01-29DOI: 10.1016/j.jnoncrysol.2026.123988
Zhengqu Zhu , Pu Wang , Yannan Dong , Jing Pang , Jiaquan Zhang
To address the issues of relatively high loss and low permeability of FeSiBC amorphous soft magnetic composites (SMCs) in mid-to-high frequency applications, this study proposes and systematically investigates a composite insulating coating strategy that combines sol-gel processing with phosphating passivation. A nanometer-scale SiO2 layer was first constructed on the surface of FeSiBC amorphous flakes via an optimized sol-gel route. The effects of reaction temperature and ammonia concentration on coating formation were investigated, and the results revealed that a uniform and dense amorphous SiO2 layer with a thickness of ∼80 nm was obtained at 30°C and an ammonia concentration of 0.015 mL g-1. This coating effectively balanced magnetic dilution and electrical insulation, reducing the core loss from 191.1 to 159.6 mW cm-3 at 100 kHz/50 mT. On this basis, a phosphate/SiO2 bilayer coating was developed to further improve interfacial adhesion and magnetic performance. The Fe-O-P bonding enhanced interface stability, while the weak ferromagnetism and flexibility of the phosphate layer mitigated magnetic dilution and promoted particle compaction. The optimized FeSiBC@Phosphate@SiO2 SMCs exhibited a low power loss of 143.6 mW cm⁻³ (100 kHz, 50 mT), an effective permeability of 74.28, and a DC bias of 57.89% under 100 Oe. Through the synergistic design of a transformational phosphate interface and a ceramic SiO2 insulating layer, the composite coating strategy achieves reduced loss while simultaneously enhancing permeability. This approach mitigates the conventional trade-off between permeability and loss in mid-to-high frequency SMCs and further improves environmental stability, providing a new interfacial engineering concept and technical pathway for the development of high-performance SMCs.
{"title":"Synergistic regulation mechanism and effects of sol-gel and phosphoric acid passivation composite insulation coatings on FeSiBC amorphous soft magnetic composites","authors":"Zhengqu Zhu , Pu Wang , Yannan Dong , Jing Pang , Jiaquan Zhang","doi":"10.1016/j.jnoncrysol.2026.123988","DOIUrl":"10.1016/j.jnoncrysol.2026.123988","url":null,"abstract":"<div><div>To address the issues of relatively high loss and low permeability of FeSiBC amorphous soft magnetic composites (SMCs) in mid-to-high frequency applications, this study proposes and systematically investigates a composite insulating coating strategy that combines sol-gel processing with phosphating passivation. A nanometer-scale SiO<sub>2</sub> layer was first constructed on the surface of FeSiBC amorphous flakes via an optimized sol-gel route. The effects of reaction temperature and ammonia concentration on coating formation were investigated, and the results revealed that a uniform and dense amorphous SiO<sub>2</sub> layer with a thickness of ∼80 nm was obtained at 30°C and an ammonia concentration of 0.015 mL g<sup>-1</sup>. This coating effectively balanced magnetic dilution and electrical insulation, reducing the core loss from 191.1 to 159.6 mW cm<sup>-3</sup> at 100 kHz/50 mT. On this basis, a phosphate/SiO<sub>2</sub> bilayer coating was developed to further improve interfacial adhesion and magnetic performance. The Fe-O-P bonding enhanced interface stability, while the weak ferromagnetism and flexibility of the phosphate layer mitigated magnetic dilution and promoted particle compaction. The optimized FeSiBC@Phosphate@SiO<sub>2</sub> SMCs exhibited a low power loss of 143.6 mW cm⁻³ (100 kHz, 50 mT), an effective permeability of 74.28, and a DC bias of 57.89% under 100 Oe. Through the synergistic design of a transformational phosphate interface and a ceramic SiO<sub>2</sub> insulating layer, the composite coating strategy achieves reduced loss while simultaneously enhancing permeability. This approach mitigates the conventional trade-off between permeability and loss in mid-to-high frequency SMCs and further improves environmental stability, providing a new interfacial engineering concept and technical pathway for the development of high-performance SMCs.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"678 ","pages":"Article 123988"},"PeriodicalIF":3.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146070975","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}
Pub Date : 2026-04-01Epub Date: 2026-01-31DOI: 10.1016/j.jnoncrysol.2026.123991
Xianda Li , Feng Liu , Rui Wan , Weinan Li , Pengfei Wang
In this study, we investigated the morphological and optical properties of the femtosecond laser-induced structures in fluorotellurite glass. The refractive index change of laser-induced structures exhibited positive and negative under different focusing condition. The threshold was then estimated to be 1.5 × 1012 W/cm2 using axicon shaped Bessel beam scanning. The followed thermal annealing shows that the thermal stability of laser-induced structures with negative refractive index change is much higher. Then the pump-probe shadowgraph revealed that the intensity of laser-induced plasma (LIP) that formed laser-induced structures with negative refractive index change is an order of magnitude greater than that of LIP that formed structures with positive refractive index change, which indicates the structural change of the main framework of fluorotellurite glass.
{"title":"Characteristics of different femtosecond laser-induced structures in fluorotellurite glass","authors":"Xianda Li , Feng Liu , Rui Wan , Weinan Li , Pengfei Wang","doi":"10.1016/j.jnoncrysol.2026.123991","DOIUrl":"10.1016/j.jnoncrysol.2026.123991","url":null,"abstract":"<div><div>In this study, we investigated the morphological and optical properties of the femtosecond laser-induced structures in fluorotellurite glass. The refractive index change of laser-induced structures exhibited positive and negative under different focusing condition. The threshold was then estimated to be 1.5 × 10<sup>12</sup> W/cm<sup>2</sup> using axicon shaped Bessel beam scanning. The followed thermal annealing shows that the thermal stability of laser-induced structures with negative refractive index change is much higher. Then the pump-probe shadowgraph revealed that the intensity of laser-induced plasma (LIP) that formed laser-induced structures with negative refractive index change is an order of magnitude greater than that of LIP that formed structures with positive refractive index change, which indicates the structural change of the main framework of fluorotellurite glass.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"678 ","pages":"Article 123991"},"PeriodicalIF":3.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081859","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}
Pub Date : 2026-04-01Epub Date: 2026-01-31DOI: 10.1016/j.jnoncrysol.2026.123987
Jun Li , Haigang Ye , Yun Wang , Jixin Chang , Xiyao Ren , Xinhui Shen , Jiahao Jin , Jie Gao , Xiangxin Meng , Lawen Xu
The pervasive rise of electromagnetic interference necessitates the development of advanced, lightweight, and sustainable absorption materials. An innovative and scalable strategy is reported for the fabrication of high-performance carboxymethyl cellulose-derived carbon/reduced graphene oxide (C/rGO) aerogels. This utilized a rapid pore engineering method that precisely controls high-speed emulsification to tailor the internal porous architecture. The optimized C/rGO-12000 aerogel exhibits outstanding electromagnetic wave absorption performance, achieving a minimum reflection loss (RLmin) of -28.10 dB and an exceptionally broad effective absorption bandwidth (EAB) of 6.3 GHz at 2.2 mm. CST simulations further confirm its excellent radar stealth capability, resulting in a maximum RCS reduction of 22.02 dBm2. The superior absorption is dominated by robust dielectric loss mechanisms facilitated by excellent impedance matching. This mechanism is driven by the synergistic effect of conduction loss and polarization loss, which comprises interface polarization from abundant C/rGO heterointerfaces and dipole polarization from structural defects. The low-density porous structure, measured at 71.66 mg/cm3, simultaneously enhances multiple reflection and scattering, promoting energy dissipation. This work presents a simple yet powerful approach for designing next-generation microwave absorbers with significant commercial potential.
{"title":"Emulsification-engineered C/rGO aerogels for ultrabroadband electromagnetic wave absorption","authors":"Jun Li , Haigang Ye , Yun Wang , Jixin Chang , Xiyao Ren , Xinhui Shen , Jiahao Jin , Jie Gao , Xiangxin Meng , Lawen Xu","doi":"10.1016/j.jnoncrysol.2026.123987","DOIUrl":"10.1016/j.jnoncrysol.2026.123987","url":null,"abstract":"<div><div>The pervasive rise of electromagnetic interference necessitates the development of advanced, lightweight, and sustainable absorption materials. An innovative and scalable strategy is reported for the fabrication of high-performance carboxymethyl cellulose-derived carbon/reduced graphene oxide (C/rGO) aerogels. This utilized a rapid pore engineering method that precisely controls high-speed emulsification to tailor the internal porous architecture. The optimized C/rGO-12000 aerogel exhibits outstanding electromagnetic wave absorption performance, achieving a minimum reflection loss (RL<sub>min</sub>) of -28.10 dB and an exceptionally broad effective absorption bandwidth (EAB) of 6.3 GHz at 2.2 mm. CST simulations further confirm its excellent radar stealth capability, resulting in a maximum RCS reduction of 22.02 dBm<sup>2</sup>. The superior absorption is dominated by robust dielectric loss mechanisms facilitated by excellent impedance matching. This mechanism is driven by the synergistic effect of conduction loss and polarization loss, which comprises interface polarization from abundant C/rGO heterointerfaces and dipole polarization from structural defects. The low-density porous structure, measured at 71.66 mg/cm<sup>3</sup>, simultaneously enhances multiple reflection and scattering, promoting energy dissipation. This work presents a simple yet powerful approach for designing next-generation microwave absorbers with significant commercial potential.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"678 ","pages":"Article 123987"},"PeriodicalIF":3.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191340","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}
Pub Date : 2026-03-15Epub Date: 2026-01-27DOI: 10.1016/j.jnoncrysol.2026.123986
Youssef Ettahiri , Raúl Vico Lujano , Willy Leclerc , Lahcen Bouna , Abdeljalil Benlhachemi , Juan Antonio Cecilia , Enrique Rodríguez-Castellón , Dolores Eliche-Quesada , Luis Pérez-Villarejo
This study introduces a novel geopolymer system based on Spent Potlining (SPL), an industrial waste byproduct, used as an aluminosilicate precursor (in combination with metakaolin, MK) and as a gas-generating agent for carbon dioxide (CO2) capture. Five geopolymer mixes (SM1-SM5) were synthesized by varying the SPL/MK ratio to investigate its effect on pore structure and CO2 adsorption performance. Geopolymer formation was confirmed through XRD, 29Si and 27Al MAS NMR, and FTIR analyses. BET surface area and total pore volume progressively increased across the sample series (SM1-SM5), with SM5 achieving the highest surface area (15.04 m2/g) and pore volume (0.1074 cm3/g). SEM revealed cohesive and homogeneous microstructures, indicating effective geopolymerization, while micro-CT imaging showed enhanced macroporosity and interconnected pore networks with increasing SPL content. Notably, SM1 (100% SPL) exhibited rapid gas release and expansion, forming a highly open, interconnected macroporous structure with the highest total porosity (76.2%). Pore morphology analysis using Fiji-ImageJ indicated predominantly spherical pores. Thermal conductivity increased from 0.074 W/mK in SM1 to 0.113 W/mK in SM5, correlating with increasing density and decreasing porosity. SM5 also demonstrated the highest adsorption capacity (0.069 mmol/g), surpassing both pure SPL (0.035 mmol/g) and pure MK (0.036 mmol/g), highlighting the synergistic effect of combining SPL and MK.
{"title":"Porous geopolymer monoliths: synthesis, characterization, and performance as a novel bulk solid adsorbent for CO2 capture","authors":"Youssef Ettahiri , Raúl Vico Lujano , Willy Leclerc , Lahcen Bouna , Abdeljalil Benlhachemi , Juan Antonio Cecilia , Enrique Rodríguez-Castellón , Dolores Eliche-Quesada , Luis Pérez-Villarejo","doi":"10.1016/j.jnoncrysol.2026.123986","DOIUrl":"10.1016/j.jnoncrysol.2026.123986","url":null,"abstract":"<div><div>This study introduces a novel geopolymer system based on Spent Potlining (SPL), an industrial waste byproduct, used as an aluminosilicate precursor (in combination with metakaolin, MK) and as a gas-generating agent for carbon dioxide (CO<sub>2</sub>) capture. Five geopolymer mixes (SM1-SM5) were synthesized by varying the SPL/MK ratio to investigate its effect on pore structure and CO<sub>2</sub> adsorption performance. Geopolymer formation was confirmed through XRD, <sup>29</sup>Si and <sup>27</sup>Al MAS NMR, and FTIR analyses. BET surface area and total pore volume progressively increased across the sample series (SM1-SM5), with SM5 achieving the highest surface area (15.04 m<sup>2</sup>/g) and pore volume (0.1074 cm<sup>3</sup>/g). SEM revealed cohesive and homogeneous microstructures, indicating effective geopolymerization, while micro-CT imaging showed enhanced macroporosity and interconnected pore networks with increasing SPL content. Notably, SM1 (100% SPL) exhibited rapid gas release and expansion, forming a highly open, interconnected macroporous structure with the highest total porosity (76.2%). Pore morphology analysis using Fiji-ImageJ indicated predominantly spherical pores. Thermal conductivity increased from 0.074 W/mK in SM1 to 0.113 W/mK in SM5, correlating with increasing density and decreasing porosity. SM5 also demonstrated the highest adsorption capacity (0.069 mmol/g), surpassing both pure SPL (0.035 mmol/g) and pure MK (0.036 mmol/g), highlighting the synergistic effect of combining SPL and MK.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"677 ","pages":"Article 123986"},"PeriodicalIF":3.5,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090339","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}
Pub Date : 2026-03-15Epub Date: 2026-01-29DOI: 10.1016/j.jnoncrysol.2026.123975
Daniel dos Santos Francisco , Silvia Helena Santagneli , Laureano Ensuncho , Gaël Y. Poirier , Hellmut Eckert , Danilo Manzani
Bismuth phosphate glasses possess remarkable properties such as a high refractive index (∼1.9), low characteristic temperatures, thermal stability against crystallization, and an appreciable transparency window spanning from ultraviolet (UV) to near infrared (NIR). These characteristics make them promising materials for optical devices and photonic applications. This study focuses on investigating the properties of a novel bismuth-rich phosphate glass system with a ternary composition of Bi(PO3)3−Bi2O3−Na2O. The synthesis was carried out using the conventional melt-quenching method in alumina crucibles under ambient air conditions. Structural and optical properties of the newly developed glass system were assessed using Raman and UV-Vis spectroscopies, differential scanning calorimetry (DSC), and 31P. and 23Na nuclear magnetic single and double resonance. The 31P-NMR and Raman analysis reveal the depolymerization of the metaphosphate network with Bi2O3 and Na2O, acting as classical network modifiers with the theoretically expected conversion rates of three and one bridging oxygen per equivalent, respectively. The tendency of nanoparticle formation increases with the concentration of Bi2O3. UV-vis spectroscopy demonstrates that the values of the optical band gap are correlated with the modifier concentration. In addition, they indicate the formation of Bi0 nanoparticles. Transmission electron microscopy (TEM) images identified nanoparticles of spherical shape, ranging from 4 to 70 nm in diameter. In summary, the results demonstrate a promising novel phosphate glass system containing high concentrations of bismuth atoms, with the potential for elemental Bi0 nanoparticle formation.
{"title":"Bismuth-rich phosphate glasses: Synthesis, characterization, and Bi0 nanoparticle formation","authors":"Daniel dos Santos Francisco , Silvia Helena Santagneli , Laureano Ensuncho , Gaël Y. Poirier , Hellmut Eckert , Danilo Manzani","doi":"10.1016/j.jnoncrysol.2026.123975","DOIUrl":"10.1016/j.jnoncrysol.2026.123975","url":null,"abstract":"<div><div>Bismuth phosphate glasses possess remarkable properties such as a high refractive index (∼1.9), low characteristic temperatures, thermal stability against crystallization, and an appreciable transparency window spanning from ultraviolet (UV) to near infrared (NIR). These characteristics make them promising materials for optical devices and photonic applications. This study focuses on investigating the properties of a novel bismuth-rich phosphate glass system with a ternary composition of Bi(PO<sub>3</sub>)<sub>3</sub>−Bi<sub>2</sub>O<sub>3</sub>−Na<sub>2</sub>O. The synthesis was carried out using the conventional melt-quenching method in alumina crucibles under ambient air conditions. Structural and optical properties of the newly developed glass system were assessed using Raman and UV-Vis spectroscopies, differential scanning calorimetry (DSC), and <sup>31</sup>P. and <sup>23</sup>Na nuclear magnetic single and double resonance. The <sup>31</sup>P-NMR and Raman analysis reveal the depolymerization of the metaphosphate network with Bi<sub>2</sub>O<sub>3</sub> and Na<sub>2</sub>O, acting as classical network modifiers with the theoretically expected conversion rates of three and one bridging oxygen per equivalent, respectively. The tendency of nanoparticle formation increases with the concentration of Bi<sub>2</sub>O<sub>3</sub>. UV-vis spectroscopy demonstrates that the values of the optical band gap are correlated with the modifier concentration. In addition, they indicate the formation of Bi<sup>0</sup> nanoparticles. Transmission electron microscopy (TEM) images identified nanoparticles of spherical shape, ranging from 4 to 70 nm in diameter. In summary, the results demonstrate a promising novel phosphate glass system containing high concentrations of bismuth atoms, with the potential for elemental Bi<sup>0</sup> nanoparticle formation.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"677 ","pages":"Article 123975"},"PeriodicalIF":3.5,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090340","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}
Pub Date : 2026-03-15Epub Date: 2026-01-23DOI: 10.1016/j.jnoncrysol.2026.123979
Jianfei Wang , Haodong Sun , Luqi Wang , Wei Wang , Haibo Long
This work reports a synthetic strategy for the preparation of well-dispersed mesoporous silica nanoparticles (MSNs) by a high silica content (up to 4.9 wt.%) CTAB/Triethanolamine/H2O templating system. Different synthesis factors that influence the particle morphology and mesopore ordering were studied and analyzed by using low-angle XRD, SEM, TEM, N2 sorption techniques. A key step by using pre-hydrolyzed tetraethyl orthosilicate (TEOS), catalyzed by tetramethylammonium hydroxide (TMAOH) solution at 30 °C, induces the formation of ordered mesostructures. TEA’s complexing effect, known to restrain the particle growth and disrupt the self-assembly process between CTAB micelles and silicate species, can be suppressed by the introduction of pre-hydrolysis step. The incorporation of F127 significantly suppress the growth and alleviate the agglomeration of MSN particles. Based on above research findings, the ordered mesopore formation mechanism was proposed, followed by a preliminary scaled production of MSNs. The typical MSNs (H30F0.055) thus prepared exhibit ordered mesopores, with average particle sizes, mesopore size and BET surface area of around 45 nm, 2.4 nm and 715 m²·g−1, respectively. It is believed that this work can provide an efficient approach to preparing mesoporous silica nanoparticles with ordered mesopores.
{"title":"Preparation of mesoporous silica nanoparticles with ordered mesopores in high silica content templating system assisted by a pre-hydrolysis step","authors":"Jianfei Wang , Haodong Sun , Luqi Wang , Wei Wang , Haibo Long","doi":"10.1016/j.jnoncrysol.2026.123979","DOIUrl":"10.1016/j.jnoncrysol.2026.123979","url":null,"abstract":"<div><div>This work reports a synthetic strategy for the preparation of well-dispersed mesoporous silica nanoparticles (MSNs) by a high silica content (up to 4.9 wt.%) CTAB/Triethanolamine/H<sub>2</sub>O templating system. Different synthesis factors that influence the particle morphology and mesopore ordering were studied and analyzed by using low-angle XRD, SEM, TEM, N<sub>2</sub> sorption techniques. A key step by using pre-hydrolyzed tetraethyl orthosilicate (TEOS), catalyzed by tetramethylammonium hydroxide (TMAOH) solution at 30 °C, induces the formation of ordered mesostructures. TEA’s complexing effect, known to restrain the particle growth and disrupt the self-assembly process between CTAB micelles and silicate species, can be suppressed by the introduction of pre-hydrolysis step. The incorporation of F127 significantly suppress the growth and alleviate the agglomeration of MSN particles. Based on above research findings, the ordered mesopore formation mechanism was proposed, followed by a preliminary scaled production of MSNs. The typical MSNs (H30F0.055) thus prepared exhibit ordered mesopores, with average particle sizes, mesopore size and BET surface area of around 45 nm, 2.4 nm and 715 m²·g<sup>−1</sup>, respectively. It is believed that this work can provide an efficient approach to preparing mesoporous silica nanoparticles with ordered mesopores.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"677 ","pages":"Article 123979"},"PeriodicalIF":3.5,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037289","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}
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