Journal of the American Ceramic Society最新文献

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Synergistically enhanced strain and piezoelectric properties in BNT-modified BF–BT-based ceramic bnt改性bf - bt基陶瓷的应变和压电性能协同增强
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-05 DOI: 10.1111/jace.70176
Xuan Zhao, Ting Zheng, Qiong Liu, Jiagang Wu
{"title":"Synergistically enhanced strain and piezoelectric properties in BNT-modified BF–BT-based ceramic","authors":"Xuan Zhao,&nbsp;Ting Zheng,&nbsp;Qiong Liu,&nbsp;Jiagang Wu","doi":"10.1111/jace.70176","DOIUrl":"https://doi.org/10.1111/jace.70176","url":null,"abstract":"<p>Bismuth ferrite–barium titanate (BF–BT)-based ceramics exhibit outstanding strain and piezoelectric properties, making them crucial for various applications. However, the simultaneous enhancement of the piezoelectric coefficient and electrostrain remains challenging, and the physical mechanisms underlying property enhancement remain unclear. To realize comprehensive property optimization and deepen the understanding of the physical mechanisms in BF–BT ceramics, this study incorporates a third component, bismuth sodium titanate, into BF–BT-based ceramics. A large electrostrain (<i>S </i>= 0.34% @120 kV/cm) with a slightly reduced <i>d</i><sub>33</sub> can be obtained in ceramics with <i>x </i>= 0.03, breaking the conventional tradeoff between <i>d</i><sub>33</sub> and strain in relaxor ferroelectrics with nanodomains. The high <i>d</i><sub>33</sub> was attributed to the rhombohedral/pseudocubic phase coexistence and the enhanced intrinsic reversible contribution. The large strain originated from the extrinsic contribution of easier domain switching, as evidenced by the enhanced polarization and ferroelectric scaling behavior.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196572","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
LionGlass™: A low-melting, carbonate-free alternative to soda lime silicate glass liongglass™:一种低熔点、无碳酸盐的钠钙硅酸盐玻璃替代品
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-04 DOI: 10.1111/jace.70163
Nicholas L. Clark, Matthew Mancini, Elif P. Akman-Ozay, Mehmet Arda Ozay, Sierra R. Astle, Shaylee M. Becerra, Colleen Gallagher, Albert C. Suceava, Corinne Claireaux, Oscar Verheijen, Tomasz Engelmann, Andreas Prange, Christian Roos, Glen B. Cook, Venkatraman Gopalan, John C. Mauro
{"title":"LionGlass™: A low-melting, carbonate-free alternative to soda lime silicate glass","authors":"Nicholas L. Clark,&nbsp;Matthew Mancini,&nbsp;Elif P. Akman-Ozay,&nbsp;Mehmet Arda Ozay,&nbsp;Sierra R. Astle,&nbsp;Shaylee M. Becerra,&nbsp;Colleen Gallagher,&nbsp;Albert C. Suceava,&nbsp;Corinne Claireaux,&nbsp;Oscar Verheijen,&nbsp;Tomasz Engelmann,&nbsp;Andreas Prange,&nbsp;Christian Roos,&nbsp;Glen B. Cook,&nbsp;Venkatraman Gopalan,&nbsp;John C. Mauro","doi":"10.1111/jace.70163","DOIUrl":"https://doi.org/10.1111/jace.70163","url":null,"abstract":"<p>LionGlass™ is Penn State University's patent-pending alumino-silicophosphate glass compositional family that offers, for the first time, a viable low-melting, carbonate-free alternative to soda lime silicate glass by (a) lowering the melting temperature by up to 400°C compared to soda lime silicate glass and (b) eliminating the use of carbonate batch materials. The viscosity curve of LionGlass is shifted downward in temperature compared to soda lime silicate glass, enabling melting at much lower temperatures. LionGlass also has significantly improved resistance to crack initiation compared to soda lime silicate glass. Other properties, such as thermal expansion coefficient and optical dispersion curve, are comparable to those of traditional soda lime silicate glass.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.70163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196539","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
Pressure-induced amorphization of a Combeite crystal Combeite晶体的压力诱导非晶化
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-04 DOI: 10.1111/jace.70170
Rafael Abel da Silveira, Silvio Buchner
{"title":"Pressure-induced amorphization of a Combeite crystal","authors":"Rafael Abel da Silveira,&nbsp;Silvio Buchner","doi":"10.1111/jace.70170","DOIUrl":"https://doi.org/10.1111/jace.70170","url":null,"abstract":"<p>This study explored the Combeite crystal (Na<sub>2</sub>O·2CaO·3SiO<sub>2</sub>) under high-pressure conditions. This crystal was initially produced by fully crystallizing a glass with the same composition. A diamond anvil cell was used to analyze the crystal under pressures up to 30 GPa by performing in situ X-ray diffraction and Raman spectroscopy. The results show a densification up to 10.3 GPa, which can be seen on the shifts on the peaks of the diffractograms, as well as the same behavior being observed in the Raman spectra up to the same pressure value. Starting at that point and ending at 15.5 GPa, the material undergoes a transition characterized by the disappearance of all Combeite peaks from the diffractograms as well as a huge jump in the full width at half maximum of the main Raman band; both results indicate that this crystal undergoes a pressure-induced amorphization. This conclusion is corroborated by comparing the results from this study to the parent glass under the same high-pressure conditions, where it can be observed that the structures obtained, at 30 GPa, both exhibit an amorphous structure, regardless of whether they originated from the glass or the Combeite crystal.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.70170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196540","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
Effects of Ba-substitution on structural and multiferroic characteristics of Z-type hexaferrite ceramics ba取代对z型六铁体陶瓷结构和多铁性的影响
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-04 DOI: 10.1111/jace.70162
Jun Chao Huang, Shu Ya Wu, Xiao Qiang Liu, Xiang Ming Chen
{"title":"Effects of Ba-substitution on structural and multiferroic characteristics of Z-type hexaferrite ceramics","authors":"Jun Chao Huang,&nbsp;Shu Ya Wu,&nbsp;Xiao Qiang Liu,&nbsp;Xiang Ming Chen","doi":"10.1111/jace.70162","DOIUrl":"https://doi.org/10.1111/jace.70162","url":null,"abstract":"<p>Ba<i><sub>x</sub></i>Sr<sub>3-</sub><i><sub>x</sub></i>Co<sub>2</sub>Fe<sub>24</sub>O<sub>41</sub> (<i>x</i> = 0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0) ceramics were synthesized via a standard solid-state reaction process to investigate the effects of Ba-substitution on their structural, ferromagnetic, ferroelectric, and magnetodielectric characteristics. Ba-substitution effectively stabilized the Z-type phase, mitigated Sr segregation, and enhanced both grain growth and saturation magnetization (<i>M</i>s). With increasing <i>x</i>, the Fe-O-Fe bond angles at the junction of the magnetic blocks decreased, leading to reduced magnetic frustration and decreased stability of the transverse conical magnetic structure. For <i>x</i> ≤ 2.0, a saturated ferroelectric hysteresis loop was observed at 100 K. Notably, the study revealed a complex relationship between the magnetodielectric effect and the substitution level, with optimal coupling coefficients observed at <i>x</i> = 0.5. The results also suggested that the magnetoelectric effect in Z-type hexaferrites might arise from a synergistic interplay between inverse Dzyaloshinskii–Moriya interactions and <i>p</i>-<i>d</i> hybridization mechanisms.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196535","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
Bi3+-doped CsPbX3 (X = Cl/Br, Br, Br/I, I) quantum dots in borogermanate glasses for short-wave cut-off filters 硼锗酸盐玻璃中Bi3+掺杂CsPbX3 (X = Cl/Br, Br, Br/I, I)量子点用于短波截止滤波器
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-04 DOI: 10.1111/jace.70152
Shuai Zhang, Xizhen Zhang, Linke Song, Hui Yu, Chuanhui Cheng, Jinsu Zhang, Lihong Cheng, Baojiu Chen
{"title":"Bi3+-doped CsPbX3 (X = Cl/Br, Br, Br/I, I) quantum dots in borogermanate glasses for short-wave cut-off filters","authors":"Shuai Zhang,&nbsp;Xizhen Zhang,&nbsp;Linke Song,&nbsp;Hui Yu,&nbsp;Chuanhui Cheng,&nbsp;Jinsu Zhang,&nbsp;Lihong Cheng,&nbsp;Baojiu Chen","doi":"10.1111/jace.70152","DOIUrl":"https://doi.org/10.1111/jace.70152","url":null,"abstract":"<p>For short-wave cut-off filter application, the CsPbX<sub>3</sub> (X = Cl/Br, Br, Br/I, I) perovskite quantum dots (QDs) glasses have been modified by Bi<sup>3+</sup> doping based on borogermanate glass matrix. The structure, transmittance (T%), optical density (OD), photoluminescence (PL), PL excitation (PLE), and PL decay of the nanocrystals have been investigated for graded concentrations of Bi<sup>3+</sup>. The Bi<sup>3+</sup> is partially doped into the CsPbX<sub>3</sub> nanocrystals, and the Bi<sup>3+</sup>-doped nanocrystals are cubic structure. The Bi<sup>3+</sup> doping significantly suppresses the fluorescence intensity and shortens the PL lifetime for exciton emission of QDs, whereas key performance parameters of filters for the T% and OD are not significantly affected. The operation wavelength is tuned from blue to red light range by varying the halogen anion concentration and ratio. The optimized QDs glass exhibits excellent short-wave cut-off filtering properties, while effectively circumventing exciton emission interference. The decrease in PL intensity and average lifetime for the CsPbX<sub>3</sub> QDs is attributed to the deep energy level traps by Bi<sup>3+</sup> doping. This study provides a Bi<sup>3+</sup> doping quenching strategy for the development of high-performance optical filter materials.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196527","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
3D-printed SiC-microfiber-reinforced polymer-derived ceramic with high strength at elevated temperature 在高温下具有高强度的3d打印sic微纤维增强聚合物衍生陶瓷
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-04 DOI: 10.1111/jace.70143
Brett G. Compton, Phuong P. Bui, Stian K. Romberg, James W. Kemp, Jesse L. Reed, Avah J. Cherry, Tobias A. Schaedler
{"title":"3D-printed SiC-microfiber-reinforced polymer-derived ceramic with high strength at elevated temperature","authors":"Brett G. Compton,&nbsp;Phuong P. Bui,&nbsp;Stian K. Romberg,&nbsp;James W. Kemp,&nbsp;Jesse L. Reed,&nbsp;Avah J. Cherry,&nbsp;Tobias A. Schaedler","doi":"10.1111/jace.70143","DOIUrl":"https://doi.org/10.1111/jace.70143","url":null,"abstract":"<p>In this work, a polymer-derived ceramic composite was formulated using polysilazane resin, silicon carbide microfiber reinforcement, and fumed alumina rheology modifier. Demonstration pieces and flexural test specimens were 3D printed using direct ink writing, a type of material extrusion additive manufacturing technology. Printed specimens were cured and then pyrolyzed at 1200°C in argon, resulting in 3D-printed polymer-derive ceramic composites. Flexural test specimens were tested in 3-pt. flexure at room temperature and at high temperature (1200, 1400, 1500, and 1600°C). Flexural strength increased from 97.8 ± 20.1 MPa at room temperature to 367 ± 88 MPa and 401 ± 54 MPa at 1200 and 1400°C, respectively. Strength decreased to ∼184 MPa at 1500°C and was not measurable at 1600°C. Microscopy of fracture surfaces reveals evidence of degradation of the matrix phase above 1400°C and x-ray diffraction reveals the formation of mullite above 1200°C.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196542","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
Crack propagation modes of textured interphase in C/SiC composite C/SiC复合材料织构界面的裂纹扩展模式
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-04 DOI: 10.1111/jace.70164
Wang Hong, Xu Pang, Longbiao Li, Zhongwei Zhang
{"title":"Crack propagation modes of textured interphase in C/SiC composite","authors":"Wang Hong,&nbsp;Xu Pang,&nbsp;Longbiao Li,&nbsp;Zhongwei Zhang","doi":"10.1111/jace.70164","DOIUrl":"https://doi.org/10.1111/jace.70164","url":null,"abstract":"<p>The fracture process analysis of textured interphase in fiber-reinforced ceramic-matrix composites (CMCs) is a challenging task. In this paper, the crack formation, propagation and evolution of textured PyC interphase in C/SiC composites were experimentally and theoretically investigated. The C/SiC minicomposites containing three different textured PyC interphase, i.e., high-textured (HT), low-textured (LT) and hybrid LT/HT, were designed and fabricated, and the characteristics of interphase cracks were observed under the SEM. A phase-field model (PFM) for finite thickness textured interphase was proposed to predict the crack deflection, propagation, and evolution. The experimental observations and simulations showed that the single LT-PyC interphase serves as the main crack propagation region, effectively inducing crack deflection by array crack nucleation, merger, and propagation. In addition, As the interphase fracture toughness and modulus increase, there are three cases of the crack propagation in interphase, that is, array crack nucleation inside the interphase, short debonding at the interphase/fiber interface, and cracks penetration directly, which enriched understanding of the relationship between interphase properties and crack propagations.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196541","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
Evolution of structure and properties in oxyfluorogallate glasses upon incorporation of Al3+ ions Al3+离子掺入氟氧没食子酸盐玻璃后结构和性能的演变
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-03 DOI: 10.1111/jace.70122
Zaiyang Wang, Yukun Tu, Longfei Zhang, Linjia Hu, Long Zhang, Yiguang Jiang, Guoying Zhao, Yongzheng Fang
{"title":"Evolution of structure and properties in oxyfluorogallate glasses upon incorporation of Al3+ ions","authors":"Zaiyang Wang,&nbsp;Yukun Tu,&nbsp;Longfei Zhang,&nbsp;Linjia Hu,&nbsp;Long Zhang,&nbsp;Yiguang Jiang,&nbsp;Guoying Zhao,&nbsp;Yongzheng Fang","doi":"10.1111/jace.70122","DOIUrl":"https://doi.org/10.1111/jace.70122","url":null,"abstract":"<p>Oxyfluorogallate glasses exhibit remarkable mid-infrared transmission properties, making them ideal for various advanced applications, such as environmental monitoring, gas sensing, space communications, and biomedical diagnostics. However, thermal instability, poor moisture resistance, and poor mechanical strength hinder the development and application of oxyfluorogallate glasses. In this research, by progressively replacing Ga<sub>2</sub>O<sub>3</sub> with Al<sub>2</sub>O<sub>3</sub>, the optimized glass system exhibits remarkable thermal stability with a glass transition temperature window (Δ<i>T</i>) reaching 205°C. This significantly improved chemical durability evidenced by normalized elemental leaching rates reduced below 80% of oxyfluorogallate and superior mechanical properties, including a Knoop hardness of 643.4 kg•N/mm<sup>2</sup> and bending strength of 124.5 MPa, which is comparable to the level of quartz glass.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196393","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
Coupling effects of temperature and irradiation on the leaching behavior of borosilicate glasses 温度和辐照对硼硅酸盐玻璃浸出行为的耦合影响
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-03 DOI: 10.1111/jace.70159
Kai Bai, Ning Chen, Huashuai Hu, Buyun Zhang, Zhaoxuan Jin, Yuchuan Wang, Peng Lv, Tieshan Wang, Haibo Peng
{"title":"Coupling effects of temperature and irradiation on the leaching behavior of borosilicate glasses","authors":"Kai Bai,&nbsp;Ning Chen,&nbsp;Huashuai Hu,&nbsp;Buyun Zhang,&nbsp;Zhaoxuan Jin,&nbsp;Yuchuan Wang,&nbsp;Peng Lv,&nbsp;Tieshan Wang,&nbsp;Haibo Peng","doi":"10.1111/jace.70159","DOIUrl":"https://doi.org/10.1111/jace.70159","url":null,"abstract":"<p>Borosilicate glass has been recognized as the primary material for solidifying high-level radioactive waste. The performance stability of borosilicate glass during prolonged storage and handling necessitates rigorous examination. This work irradiated two kinds of borosilicate glasses, ternary sodium borosilicate and quaternary zirconium borosilicate glass, using 5 MeV Xe<sup>20+</sup> ions. Leaching experiments were performed on pristine and irradiated samples employing the MCC-1 static leaching method across a temperature range of 50–90°C, with increments of 10°C. Advanced analytical techniques were used to characterize the leached samples and the leaching solution, including Inductively Coupled Plasma Optical Emission Spectroscopy, Fourier Transform Infrared Spectroscopy, and Time-of-Flight Secondary Ion Mass Spectrometry. The findings elucidate the leaching kinetics of the primary elements in borosilicate glass, both pristine and following irradiation. Further, quantify the acceleration factor attributed to temperature and irradiation on the leaching behavior of simple borosilicate glass. The apparent activation energy of boron in pristine and irradiated glass was also determined by the Arrhenius equation, and the apparent activation energy exhibited a slight increase following irradiation. These results shed light on the leaching characteristics of borosilicate glass under the synergistic conditions of elevated temperature and irradiation. This comprehensive analysis offers valuable insights for optimizing glass compositions and guides leaching experiments on nuclear waste glass.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196391","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
Surface charge effects on Sr-hydroxyapatite degradation in water solution: Surface and penetration diffusion 表面电荷对sr -羟基磷灰石在水溶液中降解的影响:表面和渗透扩散
IF 3.8 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-08-03 DOI: 10.1111/jace.70160
Junjie Wen, Xiaofeng Zhao, Yuancheng Teng, Yuxiang Li, Shanlin Wang, Qingguo Chen, Weipeng Wang, Wei Luo, Rajeev Ahuja, Zhengjun Zhang
{"title":"Surface charge effects on Sr-hydroxyapatite degradation in water solution: Surface and penetration diffusion","authors":"Junjie Wen,&nbsp;Xiaofeng Zhao,&nbsp;Yuancheng Teng,&nbsp;Yuxiang Li,&nbsp;Shanlin Wang,&nbsp;Qingguo Chen,&nbsp;Weipeng Wang,&nbsp;Wei Luo,&nbsp;Rajeev Ahuja,&nbsp;Zhengjun Zhang","doi":"10.1111/jace.70160","DOIUrl":"https://doi.org/10.1111/jace.70160","url":null,"abstract":"<p>Hydroxyapatite (HAP) can serve as a critical permeable reactive barrier for the in situ remediation of <sup>90</sup>Sr radionuclides from groundwater through promoting co-precipitation. The Sr<sup>2+</sup> leaching associated with the structural degradation of Sr-HAP in the geological field environment is crucial for lowering groundwater radioactivity; thus, evaluating HAP chemical durability is critical. However, the degradation mechanism of Sr-doped HAP upon water solutions under the influence of surface charge effects remains unclear and requires further investigation. In this work, the surface degradation and penetration diffusion of Sr-doped HAP are systematically investigated based on density functional theory and dissolution experiments. Some specific issues such as the preparation process of single-phase ceramics and surface morphology are discussed in details, along with uncovering the relationship between Sr–O bond and Sr leaching activity. The results reveal that the degradation behavior of Sr-HAP ceramics follows a typical dissolution-precipitation process. The presence of unsaturated chemical bonds derived from incomplete [SrO<sub>7</sub>] and [SrO<sub>9</sub>] coordination polyhedra can enhance the ability of Sr-HAP to facilitate surface adsorption and contribute to the nonuniform distribution of electronic states at the nanoscale. Importantly, the hydrogen bonds from aqueous solution provide a strong upward pulling force for the surface adsorption sites to render the metastable surface structure rather than water molecule penetration diffusion, leading to the outer layer of the (0 0 1) surface spontaneously twists to form Schottky defects.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196392","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
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