Journal of the American Ceramic Society最新文献

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An Exploration of Mechanochemical Activation on Various Potential Supplementary Cementitious Materials 各种潜在补充胶凝材料的力学化学活化研究
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71170
Sofiane Amroun, Prannoy Suraneni
{"title":"An Exploration of Mechanochemical Activation on Various Potential Supplementary Cementitious Materials","authors":"Sofiane Amroun,&nbsp;Prannoy Suraneni","doi":"10.1111/jace.71170","DOIUrl":"https://doi.org/10.1111/jace.71170","url":null,"abstract":"<p>The use of supplementary cementitious materials (SCMs) is a major way to reduce the carbon footprint of concrete. Mechanochemical activation (MCA) can be used to activate inert materials that can then be used as SCMs. In this study, the effect of MCA using a planetary ball mill was investigated for 16 materials, ranging from natural occurring materials to by-products from various industries. In general, MCA caused the formation of nanoparticles, which were aggregated (rigidly bound) and agglomerated (loosely bound). Increased particle sphericity was also observed from scanning electron microscopy data. Additionally, the amorphous content, Brunauer–Emmett–Teller (BET) specific surface area, and total pore volume increased for after MCA respectively by 29%, 172%, and 427% on average. We demonstrated that initially reactive materials show modest increases (92% average increase) in reactivity after MCA. In contrast, inert materials experience a much greater increase (1126% average increase) depending on their chemical composition, amorphous content, BET specific surface area, and phase hardness. From the tested materials, all initially inert ones were transformed into reactive SCMs after MCA. Under the same MCA grinding conditions, pre-MCA reactivity can be used to predict post-MCA reactivity.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.71170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848978","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: 0
Eu3+-Activated Ba2LaMoO6 Red-Emitting Phosphors for UVB/Blue-Driven Solid-State Lighting 用于UVB/ blue驱动固态照明的Eu3+活化Ba2LaMoO6红色发光荧光粉
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71177
Shruti Sajwan, Pradeep K. Vishwakarma, Sunil K. Singh
{"title":"Eu3+-Activated Ba2LaMoO6 Red-Emitting Phosphors for UVB/Blue-Driven Solid-State Lighting","authors":"Shruti Sajwan,&nbsp;Pradeep K. Vishwakarma,&nbsp;Sunil K. Singh","doi":"10.1111/jace.71177","DOIUrl":"https://doi.org/10.1111/jace.71177","url":null,"abstract":"<div>\u0000 \u0000 <p>Thermally stable red-emitting phosphors capable of sustaining efficiency at elevated temperatures are crucial for high-power solid-state lighting. In this study, Eu<sup>3+</sup>-activated Ba<sub>2</sub>LaMoO<sub>6</sub> phosphors were synthesized via conventional solid-state reaction route at 1200°C, yielding a monoclinic phase [P2<sub>1</sub>/c (14)] with successful substitution of Eu<sup>3+</sup> at La<sup>3+</sup> sites. Developed phosphors exhibit intense red Eu<sup>3+</sup> emission dominated by the hypersensitive <sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>2</sub> transition, indicating a non-centrosymmetric monoclinic environment, with optimal emission at 8 mol% Eu<sup>3+</sup> doping beyond which dipole–dipole quenching occurs. Temperature-dependent photoluminescence (TD-PL) analysis reveals gradual thermal quenching, with ∼30% emission retained at 440 K, following Arrhenius-type trend with moderate activation energies of 0.3464 and 0.3024 eV under 292 nm excitation, and 0.2873 and 0.2667 eV under 467 nm excitation during the heating and cooling cycles, respectively. To assess their practical applicability, poly(methyl methacrylate) as thermoplastic resin-dispersed phosphor integrated onto a glass slide exhibits intense red emission with high color purity, stable CIE coordinates, and low correlated color temperature (CCT). Chromaticity coordinates (CIE) remain in the red region with high color purity across the investigated temperature range, underscoring the potential of Ba<sub>2</sub>LaMoO<sub>6</sub>:Eu<sup>3+</sup> phosphors as promising red-emitting materials for optoelectronic and solid-state lighting applications.</p>\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849167","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
Robust Superhydrophobic Coatings Enabled by Carbonation-Induced In Situ Hydrophobization 碳化诱导的原位疏水性实现了坚固的超疏水涂层
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71190
Fu Ke, Tianhao Deng, Yukun Qin, Jian Luo, Helong Zhang, Xiong Qian, Yong Tao, Jianrong Song, Chuanlin Hu, Fazhou Wang, Yi Xie
{"title":"Robust Superhydrophobic Coatings Enabled by Carbonation-Induced In Situ Hydrophobization","authors":"Fu Ke,&nbsp;Tianhao Deng,&nbsp;Yukun Qin,&nbsp;Jian Luo,&nbsp;Helong Zhang,&nbsp;Xiong Qian,&nbsp;Yong Tao,&nbsp;Jianrong Song,&nbsp;Chuanlin Hu,&nbsp;Fazhou Wang,&nbsp;Yi Xie","doi":"10.1111/jace.71190","DOIUrl":"https://doi.org/10.1111/jace.71190","url":null,"abstract":"<div>\u0000 \u0000 <p>Conventional carbonation of calcium silicates locks away CO<sub>2</sub> yet leaves behind hydrophilic, brittle surfaces. Here, we transform this limitation into an opportunity by developing a hydrophobization-assisted carbonation strategy that simultaneously fixes CO<sub>2</sub> and constructs a durable superhydrophobic coating. The introduction of fluorinated silane (PFOTES) modifies the local carbonation environment and promotes the formation of abundant micro-scale CaCO<sub>3</sub> features integrated with low-surface-energy components, leading to a hierarchical mineralized surface rather than a superficial deposited layer. The optimized coating achieves a CO<sub>2</sub> uptake of 9.92 wt% as quantified by TG/DTG analysis, together with a high-water contact angle of ∼158.9° and a ∼35.9% increase in pull-off adhesion strength compared with the pristine coating. More importantly, the superhydrophobic state remains stable under abrasion, particle impact, UV irradiation, and prolonged exposure to water, salt, and alkaline environments. Structural characterization further indicates that PFOTES modification alters the surface morphology and roughness evolution during carbonation, contributing to the development of a more stable non-wetting state. This work demonstrates a route for coupling carbonation-driven inorganic growth with surface functionalization, providing new insights into durable superhydrophobic coatings derived from calcium silicate systems and carbonation-enabled surface engineering.</p>\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849335","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
An Efficient Blue (Na, Li)2Ba6Si4O15:Ce3+ Phosphor for Near-Ultraviolet-Excited White LEDs 近紫外激发白光led用高效蓝(Na, Li)2Ba6Si4O15:Ce3+荧光粉
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71186
Jia Kuang, Shuai Wei, Yueyao Yang, Jinyi Yan, Xiaoyu Jin, Mengjie Zhou, Zeyu Lyu, Hongpeng You
{"title":"An Efficient Blue (Na, Li)2Ba6Si4O15:Ce3+ Phosphor for Near-Ultraviolet-Excited White LEDs","authors":"Jia Kuang,&nbsp;Shuai Wei,&nbsp;Yueyao Yang,&nbsp;Jinyi Yan,&nbsp;Xiaoyu Jin,&nbsp;Mengjie Zhou,&nbsp;Zeyu Lyu,&nbsp;Hongpeng You","doi":"10.1111/jace.71186","DOIUrl":"https://doi.org/10.1111/jace.71186","url":null,"abstract":"<div>\u0000 \u0000 <p>Tailoring the structure of a solid solution can effectively enhance the luminescence intensity and thermal stability of Ce<sup>3+</sup>-activated phosphors. In this work, a new blue phosphor Na<sub>2</sub>Ba<sub>6</sub>Si<sub>4</sub>O<sub>15</sub>:Ce<sup>3+</sup> was developed. The introduction of Li<sup>+</sup> into Na<sub>2</sub>Ba<sub>6</sub>Si<sub>4</sub>O<sub>15</sub>:Ce<sup>3+</sup> to form the Na<sub>2-</sub><i><sub>y</sub></i>Li<i><sub>y</sub></i>Ba<sub>6</sub>Si<sub>4</sub>O<sub>15</sub>:0.08Ce<sup>3+</sup> (0 ≤ y ≤ 0.7) solid solution system leads to a 150% increase in the luminescence intensity of the optimal sample (<i>y</i> = 0.1) compared with the original phosphor, along with a significant red shift of the emission peak from 426 to 438 nm. At the same time, the sample exhibited excellent thermal stability (I<sub>423 K</sub>/I<sub>303 K</sub> = 90%) and a high internal quantum efficiency (IQE = 98.02%). Structural analysis revealed that Li<sup>+</sup> substitution effectively relieved the lattice distortion caused by Ce<sup>3+</sup> replacing Ba<sup>2+</sup>, shortened the Ce<sup>3+</sup>-O<sup>2−</sup> bond length, and strengthened the nephelauxetic effect, which provided a structural basis for the improved luminescence performance. When it was mixed with commercial phosphors and encapsulated into a device, the color rendering index (Ra) was found to be 93.7, with a correlated color temperature of 5579 K, demonstrating excellent color reproduction ability. This work provides an effective reference for developing high-efficiency, high-thermal-stability new phosphors by crystal structure engineering.</p>\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849336","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
Robust Antiferroelectric Response in the Pbca Phase of Hafnium Zirconium Oxide via Aluminum Substitution 经铝取代的氧化铪锆Pbca相的鲁棒反铁电响应
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71191
Yong Kyu Choi, MinChul Kang, Tinsae Alem, Nicolas K. Lam, Andrea L. Watson, Kory Burns, Stephen J. McDonnell, Lin Zhou, Jon F. Ihlefeld
{"title":"Robust Antiferroelectric Response in the Pbca Phase of Hafnium Zirconium Oxide via Aluminum Substitution","authors":"Yong Kyu Choi,&nbsp;MinChul Kang,&nbsp;Tinsae Alem,&nbsp;Nicolas K. Lam,&nbsp;Andrea L. Watson,&nbsp;Kory Burns,&nbsp;Stephen J. McDonnell,&nbsp;Lin Zhou,&nbsp;Jon F. Ihlefeld","doi":"10.1111/jace.71191","DOIUrl":"https://doi.org/10.1111/jace.71191","url":null,"abstract":"<p>Hafnium zirconium oxide (HZO) has attracted attention for applications in nonvolatile memory and energy harvesting devices. However, it faces practical challenges such as insufficient endurance. One promising strategy to address this limitation is the utilization of antiferroelectric (AFE) behavior in HZO-based materials. Previous studies have shown that various metal substitutions into HZO can result in AFE-like properties within specific substitution concentration windows. While AFE-like properties have often been attributed to the tetragonal phase of ZrO<sub>2</sub>, recent studies suggest that the antipolar orthorhombic phase (space group <i>Pbca</i>) may instead be responsible for the observed AFE behavior. This study investigates how varying aluminum substitution concentration influences the phase and electrical properties of HZO devices to clarify the origin of AFE behavior. The results demonstrate that low aluminum concentrations in HZO, particularly in 8:1 and 6:1 HZO:Al composition ratio HZO devices, lead to pronounced real AFE behavior associated with the formation of the <i>Pbca</i> phase.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.71191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848909","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: 0
Interconnected Al/Al2O3 Porous Scaffolds Fabricated by In Situ Oxidation for Phase Change Energy Storage 原位氧化制备用于相变储能的互联Al/Al2O3多孔支架
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71161
Hao Li, Zun Xia, Zhe Chen, Shihui Zhao, Pengfei Chen, Jianli Qiao, Jinlong Yang
{"title":"Interconnected Al/Al2O3 Porous Scaffolds Fabricated by In Situ Oxidation for Phase Change Energy Storage","authors":"Hao Li,&nbsp;Zun Xia,&nbsp;Zhe Chen,&nbsp;Shihui Zhao,&nbsp;Pengfei Chen,&nbsp;Jianli Qiao,&nbsp;Jinlong Yang","doi":"10.1111/jace.71161","DOIUrl":"https://doi.org/10.1111/jace.71161","url":null,"abstract":"<div>\u0000 \u0000 <p>Conventional porous ceramic supports for phase change materials (PCMs) suffer from low thermal conductivity, high sintering temperatures, and complex fabrication processes. To address these limitations, this study developed an integrated manufacturing strategy combining foam-gelcasting with vacuum freeze-drying. Using Al powder as the precursor, an Al/Al<sub>2</sub>O<sub>3</sub> scaffold was constructed via a controlled partial oxidation process in air at low sintering temperature. This innovative design strategically utilizes the in situ formed Al<sub>2</sub>O<sub>3</sub> framework to ensure mechanical strength and structural stability, while the intentionally retained metallic Al network guarantees high thermal conductivity. The resulting scaffold, sintered at 750°C, achieves a high open porosity of 91.60% and a compressive strength of 0.48 MPa, enabling a high paraffin loading capacity of 83.27%. The final composite PCM exhibits a comprehensive set of outstanding properties, including a thermal conductivity of 0.434 W/(m·K), a solar absorptance of 85.8%, and excellent thermal cycling stability (mass loss &lt; 6% after 50 cycles). This work establishes a novel and efficient route for fabricating high-performance composite PCMs that are tailored for integrated solar thermal energy harvesting and storage.</p>\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849229","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 Responses of Aluminoborosilicate Glasses to Pressure and Iodine Incorporation: An Advanced NMR Investigation 硼硅铝玻璃对压力和碘掺入的结构响应:一种先进的核磁共振研究
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71119
Hanyu Hu, Sami Soudani, Yann Morizet, Michael Paris, Thibault Charpentier
{"title":"Structural Responses of Aluminoborosilicate Glasses to Pressure and Iodine Incorporation: An Advanced NMR Investigation","authors":"Hanyu Hu,&nbsp;Sami Soudani,&nbsp;Yann Morizet,&nbsp;Michael Paris,&nbsp;Thibault Charpentier","doi":"10.1111/jace.71119","DOIUrl":"https://doi.org/10.1111/jace.71119","url":null,"abstract":"<p>Iodine-129 is a critical challenge for nuclear waste immobilization due to its high mobility and extremely long half-life (1.57 × 10<sup>7</sup> years). Although high-pressure glass synthesis has been shown to significantly enhance iodine solubility, the structural mechanisms governing its incorporation are only partially understood. Here, we combine advanced multinuclear solid-state NMR spectroscopy (<sup>11</sup>B, <sup>17</sup>O, <sup>23</sup>Na, <sup>27</sup>Al, and <sup>29</sup>Si) with molecular dynamics and DFT calculations of NMR interactions to disentangle the respective roles of pressure and iodine incorporation in doubly isotopically enriched (<sup>17</sup>O and <sup>29</sup>Si) aluminoborosilicate glasses synthesized at 1 and 2 GPa. NMR results show that iodine incorporation increases network polymerization primarily through the consumption of Si non-bridging oxygens and the formation of additional Si–O–Si and Si–O–B linkages, whereas pressure independently promotes densification via enhanced BO<sub>4</sub> formation and stabilization of higher-coordinated aluminum species. Notably, <sup>17</sup>O MAS, 3QMAS, and heteronuclear correlation experiments provide novel atomic-scale insights into oxygen speciation in high-pressure aluminoborosilicate glasses, a regime poorly documented. MD-derived structural models reproduce pressure-induced trends and enable quantitative interpretation of NMR data. These results establish a mechanistic framework for iodine incorporation under high-pressure vitrification and help of designing advanced glass matrices for long-term <sup>1</sup><sup>2</sup><sup>9</sup>I immobilization.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.71119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848910","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: 0
Structural Characterization of Iodate and Carbonate Substituted Calcium Hydroxyapatites: Insights From XRD, SEM, and TEM 碘酸盐和碳酸盐取代钙羟基磷灰石的结构表征:来自XRD, SEM和TEM的见解
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71164
Lisa Audouard, Marie-Noëlle de Noirfontaine, Mireille Courtial, Sandrine Tusseau-Nenez, Florian Aubrit, Olivier Dautain, Christèle Combes, Céline Cau Dit Coumes, Lionel Campayo
{"title":"Structural Characterization of Iodate and Carbonate Substituted Calcium Hydroxyapatites: Insights From XRD, SEM, and TEM","authors":"Lisa Audouard,&nbsp;Marie-Noëlle de Noirfontaine,&nbsp;Mireille Courtial,&nbsp;Sandrine Tusseau-Nenez,&nbsp;Florian Aubrit,&nbsp;Olivier Dautain,&nbsp;Christèle Combes,&nbsp;Céline Cau Dit Coumes,&nbsp;Lionel Campayo","doi":"10.1111/jace.71164","DOIUrl":"https://doi.org/10.1111/jace.71164","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates the structure and microstructure of hydroxyapatite substituted with iodate (IO<sub>3</sub><sup>−</sup>) and/or carbonate (CO<sub>3</sub><sup>2−</sup>) ions, within the context of long-lived radionuclide waste conditioning. The role of the synthesis protocol, “reverse” or “direct” precipitation from aqueous solution, as well as the nature and amount of substituted anions on the structure and microstructure of hydroxyapatite samples, was evaluated using XRD, SEM, and HRTEM. The anisotropic crystallite shape assessed by HRTEM analyses was taken into account for the Rietveld refinements of the XRD patterns. Considering the reverse synthesis protocol, these refinements revealed the formation of a single hydroxyapatite phase. Despite the use of long counting times, no crystalline secondary phases were detected by XRD, regardless of the nature and amount of the substituting anions. Iodate ions substituting for A sites tend to expand the lattice, while carbonate ions located in B sites induce lattice contraction. Clearly, the influence of iodate substitution on the structural modifications is lower than that of carbonate substitution. Moreover, co-substitution seems to modify the incorporation mode of iodate ions within the structure. The intended application of this work requires studying high substitution rates, thereby addressing gaps in the literature regarding the structural evolution of hydroxyapatite with increasing substitution rates. In this study, substitution levels reached up to 15.4 wt.% for iodate mono-substitutions, 11.9 wt.% for carbonate mono-substitutions, and approximately 20 wt.% for combined iodate and carbonate ions co-substitutions.</p>\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848911","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
In-Situ Separation and Structure Characterization of V-Cr Spinel in High-Chromium Vanadium Slag 高铬钒渣中V-Cr尖晶石的原位分离及结构表征
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71188
Xi Lan, Guoliang Feng, Jintao Gao, Lei Guo, Yanling Zhang, Zhancheng Guo
{"title":"In-Situ Separation and Structure Characterization of V-Cr Spinel in High-Chromium Vanadium Slag","authors":"Xi Lan,&nbsp;Guoliang Feng,&nbsp;Jintao Gao,&nbsp;Lei Guo,&nbsp;Yanling Zhang,&nbsp;Zhancheng Guo","doi":"10.1111/jace.71188","DOIUrl":"https://doi.org/10.1111/jace.71188","url":null,"abstract":"<div>\u0000 \u0000 <p>The crystal structure of minerals plays a pivotal role in their applications. The V-Cr spinel is the main crystalline phase of high-chromium vanadium slag, and its crystal structure is crucial for the extraction of V and Cr resources. In this study, the phase equilibrium experiments were first conducted on vanadium slag with Cr<sub>2</sub>O<sub>3</sub> contents ranging from 0 to 15 wt.% at 1400°C. The results demonstrated that almost all V and Cr elements crystallized as V-Cr spinel, and the increase in Cr<sub>2</sub>O<sub>3</sub> content promoted the crystallization of V-Cr spinel. Subsequently, three types of V-Cr spinel crystals were obtained via in-situ super-gravity separation at 1400°C, and the corresponding crystal structures were determined based on structural characterization as (Fe<sup>2+</sup>)(Fe<sup>3+</sup><sub>0.085</sub>,V<sup>3+</sup><sub>0.77</sub>,Cr<sup>3+</sup><sub>0.145</sub>)<sub>2</sub>O<sub>4</sub>, (Fe<sup>2+</sup>)(Fe<sup>3+</sup><sub>0.01</sub>,V<sup>3+</sup><sub>0.625</sub>,Cr<sup>3+</sup><sub>0.365</sub>)<sub>2</sub>O<sub>4</sub> and (Fe<sup>2+</sup>)(Fe<sup>3+</sup><sub>0.005</sub>,V<sup>3+</sup><sub>0.475</sub>, Cr<sup>3+</sup><sub>0.52</sub>)<sub>2</sub>O<sub>4</sub>, respectively. On this basis, it was found that Cr<sup>3+</sup> ion migrated into V-Cr spinel by replacing Fe<sup>3+</sup> and V<sup>3+</sup> ions, thereby enhancing the stability of the V-Cr spinel and serving as the fundamental reason for the promotion of its crystallization. This study provides additional crystal parameters for V-Cr spinel, which facilitates an understanding of the physicochemical properties of V-Cr spinel and is of great significance for the efficient extraction of V and Cr resources from high-chromium vanadium slag.</p>\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848908","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
Free-Radical Polymer-Derived Cr2GaC/C and V2PC/C MAX Phase Composites 自由基聚合物衍生的Cr2GaC/C和V2PC/C MAX相复合材料
IF 4.2 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2026-08-28 DOI: 10.1111/jace.71173
Jordan Sinclair, Lin-Lin Elliott, Todd Cataldi, Cristian Martinez, Pardeep K. Thakur, Tien-Lin Lee, Anna Regoutz, Christina S. Birkel
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