Journal of The European Ceramic Society最新文献_第7页

Carrier concentration control and thermoelectric enhancement of n-type Bi2Te3-based materials via atomic-layer-deposited In2O3 interfacial layers 基于原子层沉积In2O3界面层的n型bi2te3基材料载流子浓度控制和热电增强

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2026-01-01 DOI: 10.1016/j.jeurceramsoc.2025.118121

Gwang Min Park , Ji Ho Jeon , Jaebaek Ju , Jin-Sang Kim , Seung-Hyub Baek , Jeong Hwan Han , Seong Keun Kim

This study reports a strategy to enhance the thermoelectric performance of Bi₂Te_2.7Se_0.3 (BTS) by introducing ultrathin In₂O₃ interfacial layers via atomic layer deposition (ALD). Conformal In₂O₃ coatings were preserved after spark plasma sintering, thereby suppressing grain growth. A small interfacial energy barrier (∼0.2 eV) was formed at the BTS/In₂O₃ interface, enabling carrier filtering that preferentially transmits high-energy electrons, thereby enhancing mobility. At the same time, the coatings suppressed Te volatilization during sintering, leading to reduced carrier concentration and increased Seebeck coefficient. Although electrical conductivity decreased, the power factor remained nearly unchanged, while total thermal conductivity was markedly reduced due to a lower electronic contribution. As a result, the 20-cycle In₂O₃-coated BTS achieved a maximum zT of 1.02 at 373 K, surpassing the pristine sample. These results highlight ALD-engineered interfacial barriers as an effective approach for carrier concentration control and thermoelectric performance optimization in bulk Bi₂Te₃-based materials.

本研究报道了一种通过原子层沉积（ALD）引入超薄In2O3界面层来提高Bi2Te2.7Se0.3 （BTS）热电性能的策略。放电等离子烧结后保留了共形In2O3涂层，从而抑制了晶粒的生长。在BTS/In2O3界面上形成了一个小的界面能垒（~ 0.2 eV），使载流子滤波优先传输高能电子，从而提高了迁移率。同时，涂层抑制了烧结过程中Te的挥发，降低了载流子浓度，提高了塞贝克系数。虽然电导率下降，但功率因数几乎保持不变，而总导热系数由于电子贡献的降低而显着降低。结果表明，在373 K时，20循环的in2o3涂层BTS的zT最大值为1.02，超过了原始样品。这些结果表明，ald设计的界面屏障是控制载流子浓度和优化大块bi2te3基材料热电性能的有效方法。

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引用次数: 0

Effect of B2O3 substitution for Al2O3 on crystallization behavior, microstructure, and mechanical properties of forsterite-based glass-ceramics B2O3取代Al2O3对锻造体基微晶玻璃结晶行为、微观结构和力学性能的影响

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2025-12-24 DOI: 10.1016/j.jeurceramsoc.2025.118115

Wei Liu , Yunlan Guo , Kaiwen Hu , Jian Ruan , Jong Heo , Chao Liu

This study investigates the effects of B₂O₃ substitution for Al₂O₃ on the crystallization behavior, microstructure, and mechanical properties of glass-ceramics (GCs) in the Na₂O-MgO-Al₂O₃-SiO₂ system. Results indicate that B₂O₃ promotes the formation of [BO₃] units, leading to a more open glass network and reduced elastic modulus and hardness in the as-prepared glasses. During heat-treatment, Mg₂SiO₄ crystallizes, though its content decreases with higher B₂O₃ levels, accompanied by increased crystal size and clustering. Spectroscopic and microscopic analyses (XRD, Raman, NMR, XPS, TEM) confirm that Ti^3 + incorporates into the Mg2 site of Mg₂SiO₄, while B³⁺ partially substitutes for Si⁴⁺. The fracture toughness of GCs initially decreases due to reduced crystallinity, but recovers at higher B₂O₃ contents owing to combined effects of larger crystal size and enhanced [BO₃] content. These findings provide insights into the role of B₂O₃ in tailoring the mechanical performance of Mg₂SiO₄-based GCs through controlled structural and microstructural evolution.

本文研究了B2O3取代Al2O3对Na2O-MgO-Al2O3-SiO2体系中微晶玻璃（GCs）结晶行为、微观结构和力学性能的影响。结果表明，B2O3促进了[BO3]单元的形成，导致玻璃网络更加开放，降低了玻璃的弹性模量和硬度。在热处理过程中，Mg2SiO4出现结晶，但随着B2O3含量的增加，Mg2SiO4的含量降低，晶粒尺寸增大，簇状增大。XRD, Raman， NMR， XPS， TEM等光谱和微观分析证实，Ti3 +与Mg2SiO4的Mg2位点结合，而B3+部分取代了Si4+。GCs的断裂韧性最初因结晶度降低而降低，但在B2O3含量较高时，由于晶粒尺寸增大和[BO3]含量增加的共同作用，断裂韧性恢复。这些发现为B2O3通过控制结构和微观结构的演变来调整mg2sio4基gc的力学性能提供了新的见解。

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引用次数: 0

Effect of alumina content on the exsolution behavior and crystal structure of magnesia alumina spinel 氧化铝含量对镁铝尖晶石析出行为及晶体结构的影响

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2026-01-20 DOI: 10.1016/j.jeurceramsoc.2026.118160

Zhongzhuang Zhang , Youqi Li , Yaozheng Li , Zhongtao Luo , Guotian Ye , Yuandong Mu

Despite extensive research on the properties and applications of magnesia alumina spinel (MgAl₂O₄), the exsolution behavior of spinels with different alumina contents under varying heat-treatment temperatures remains poorly understood. This study investigates the exsolution behavior and crystal structure changes of spinel with different alumina contents under various heat treatment temperatures. We found that onset temperature for exsolution decreases with increasing alumina content. Specifically, 78-spinel and 85-spinel begin to exsolve at 1300 °C, while 90-spinel starts at 1200 °C. At 1300 °C, the alumina content in spinel reaches a minimum, with 78-spinel having the lowest alumina content (76.7 %), followed by 85-spinel (78 %) and 90-spinel (80 %). Experimental exsolution equilibrium alumina contents were higher than theoretical values due to differences in chemical driving forces and ion migration behaviors. During exsolution, Al^3 + ions occupying tetrahedral sites are preferentially expelled, leading to a measurable expansion of the spinel lattice.

尽管对镁铝尖晶石（MgAl2O4）的性能和应用进行了广泛的研究，但不同氧化铝含量的尖晶石在不同热处理温度下的析出行为仍然知之甚少。研究了不同氧化铝含量尖晶石在不同热处理温度下的析出行为和晶体结构变化。我们发现，随着氧化铝含量的增加，析出开始温度降低。其中，78尖晶石和85尖晶石在1300℃开始析出，而90尖晶石在1200℃开始析出。在1300℃时，尖晶石中的氧化铝含量达到最低，78尖晶石的氧化铝含量最低（76.7 %），其次是85尖晶石（78 %）和90尖晶石（80 %）。由于化学驱动力和离子迁移行为的差异，实验出溶平衡氧化铝含量高于理论值。在析出过程中，占据四面体位置的Al3 +离子被优先排出，导致尖晶石晶格的可测量膨胀。

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引用次数: 0

Effect of heat treatment on the microstructure and mechanical properties of SiCf/SiC composite cladding 热处理对SiCf/SiC复合包层组织和力学性能的影响

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2026-01-28 DOI: 10.1016/j.jeurceramsoc.2026.118186

Zhennan Xu , Dongmei He , Jiaxiang Xue , Zhengmao Yang , Zhaoke Chen , Liqiang Zhang , Xiang Xiong

SiC_f/SiC composite claddings have emerged as a revolutionary solution for future nuclear fuel cladding owing to their exceptional properties. However, the extreme thermal environment during service presents significant challenges to their structural integrity and performance stability. This study investigates the microstructural evolution and mechanical degradation behavior of two-layer SiC_f/SiC composite claddings following heat treatment at 1200–1500℃ with holding times of 1 and 10 h. Results indicate that moderate heat treatment (≤1300℃ for 1 h) can optimize the cladding microstructure by enhancing β-SiC crystallinity and effectively relieving residual stresses within fibers and matrix. However, as the heat treatment temperature increases and the holding time extends, varying degrees of damage occur in the fibers, interfaces, and matrix of the SiC_f/SiC composite cladding, except for the coating, leading to significant mechanical degradation. After heat treatment at 1500℃ for 10 h, the radial strength retention of the cladding fell below 80 %, and the axial strength retention decreased to 58.6 %.

SiCf/SiC复合材料包壳由于其特殊的性能已经成为未来核燃料包壳的革命性解决方案。然而，在使用过程中的极端热环境对其结构完整性和性能稳定性提出了重大挑战。研究了两层SiCf/SiC复合材料包层在1200 ~ 1500℃、保温时间分别为1和10 h热处理后的显微组织演变和力学降解行为。结果表明，适度热处理（≤1300℃，1 h）可以通过提高β-SiC结晶度和有效消除纤维和基体内部的残余应力来优化包层微观结构。然而，随着热处理温度的升高和保温时间的延长，除涂层外，SiCf/SiC复合包层的纤维、界面和基体均发生不同程度的损伤，导致明显的力学退化。在1500℃下热处理10 h后，包层的径向强度保留率降至80% %以下，轴向强度保留率降至58.6% %。

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引用次数: 0

Thermoelectric Performance Optimization of Bi0.5Sb1.5Te3 via Silicon Incorporation and Interface Engineering 基于硅掺入和界面工程的Bi0.5Sb1.5Te3热电性能优化

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2026-01-12 DOI: 10.1016/j.jeurceramsoc.2026.118141

Reyhan Başar Boz , Cem Sevik , Servet Turan

Optimization of thermoelectric performance involves overcoming two interrelated problems: maximizing the power factor and decreasing thermal conductivity. This study systematically investigates the effect of silicon (Si) addition on the thermoelectric performance of p-type Bi_0.5Sb_1.5Te₃ (BST), with an emphasis on its electronic transport properties, microstructure, and phonon scattering behavior. For this aim, a series of composites with varying Si content (x = 0, 0.35, 0.45, 0.55, 0.65 wt%) were synthesized via a melting-solidification process followed by spark plasma sintering (SPS) at 500°C under 48 MPa for an 8 min dwell time. The optimal composite (x = 0.55) exhibited a Seebeck coefficient of 224 ± 15 μV/K and a power factor of 3.80 ± 0.55 mW/mK² at 50°C. This improvement is attributed to energy filtering at interfaces that enhanced the average carrier energy while maintaining high weighted mobility (407 ± 35 cm²/V·s). Simultaneously, Si-induced lattice strain and interfacial phonon scattering had the effect of slightly decreasing κ_l + κ_b by approximately 9 %. These synergistic effects yielded a maximum ZT of 1.56 ± 0.23 at 50°C—a 14 % enhancement over pristine BST—and an average ZT (ZTₐᵥₑ) of 1.33 ± 0.20 between 50 and 200°C, corresponding to a conversion efficiency of 7.6 ± 1.14 %.

优化热电性能需要克服两个相互关联的问题：最大化功率因数和降低导热系数。本研究系统地研究了添加硅（Si）对p型Bi0.5Sb1.5Te3 （BST）热电性能的影响，重点研究了其电子输运性质、微观结构和声子散射行为。为此，通过熔融-凝固工艺合成了一系列不同Si含量（x = 0,0.35,0.45,0.55,0.65 wt%）的复合材料，然后在500°C、48 MPa、8 min的停留时间下进行放电等离子烧结（SPS）。最佳复合材料（x = 0.55）在50°C时的塞贝克系数为224 ± 15 μV/K，功率因数为3.80 ± 0.55 mW/mK²。这种改进归功于界面处的能量滤波，增强了平均载流子能量，同时保持了高加权迁移率（407 ± 35 cm²/V·s）。同时，si诱导的晶格应变和界面声子散射可以使κl + κb略微降低约9 %。这些协同效应产生的最大ZT型 1.56±0.23 50°C - a 14 %增强在原始bst平均ZT型(ZT型ₐᵥₑ)1.33 ±0.20 50至200°C,对应转换效率为7.6 ±1.14  %。

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引用次数: 0

A multi-scale fatigue life prediction method for plain-woven SiC/SiC composites based on cumulative hysteretic dissipated energy 基于累积迟滞耗散能的平织SiC/SiC复合材料多尺度疲劳寿命预测方法

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2026-01-07 DOI: 10.1016/j.jeurceramsoc.2026.118130

Ruixiang Chen , Chao You , Zikai Zhou , Weilong Wu , Chenyu Yang , Jie Sun , Fang Wang , Xiguang Gao , Yingdong Song

In this paper, a fatigue life prediction method applied for plain-woven SiC/SiC composites was developed, based on multi-scale modeling. Firstly, unidirectional tension-tension fatigue tests were carried out using mini-composites and plain-woven composites at ambient temperature and 1100 ℃. The failure modes of plain-woven CMCs were comprehensively characterized, highlighting the detrimental effects of stitching yarns in reducing the fatigue properties despite its advantages in resisting delamination. The evolution of the hysteretic dissipated energy and residual stiffness of mini-composites during fatigue loading was extracted from experimental data. They were used to describe the fatigue properties of yarns in a high-fidelity multi-scale model representing plain-woven composites, where characteristics of yarns, matrix and pores were modeled based on the mesoscale structural information obtained from scanning using the X-ray computed tomography (XCT) technology. This model was then used to successfully predict the fatigue life of plain-woven composites at the ambient temperature and 1100 ℃, accounting for the effects of stress redistribution resulting from stiffness degradation of yarns during fatigue loading. This model was further used to demonstrate that the interwoven area between warp and weft yarns was prone to debonding during fatigue loading, showing good agreement with experimental results. The effects of fatigue loads on the accumulation of mesoscale and macroscale damage within the plain-woven composites were also investigated using this model.

基于多尺度建模，提出了一种适用于平织SiC/SiC复合材料的疲劳寿命预测方法。首先，在室温和1100℃条件下，对微型复合材料和平纹编织复合材料进行了单向拉伸疲劳试验。对平纹织物碳纤维的失效模式进行了全面表征，强调了拼接纱线在抗分层方面具有优势，但在降低疲劳性能方面存在不利影响。从实验数据中提取了微复合材料在疲劳加载过程中的滞回耗散能和剩余刚度的演化规律。基于x射线计算机断层扫描（XCT）技术获得的中尺度结构信息，对纱线、基体和孔隙的特征进行建模，建立了高保真多尺度模型来描述纱线的疲劳性能。利用该模型成功地预测了常温下和1100℃下平纹编织复合材料的疲劳寿命，并考虑了疲劳加载过程中纱线刚度退化引起的应力重分布的影响。利用该模型进一步验证了经纬交织区域在疲劳加载过程中容易发生脱粘现象，与实验结果吻合较好。利用该模型研究了疲劳载荷对平纹编织复合材料中观尺度和宏观尺度损伤积累的影响。

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引用次数: 0

Giant improvement of magnetostrictive properties in polycrystalline CoFe2O4 ceramics via Cu doping and magnetic aligning during solid-state preparation process 固态制备过程中Cu掺杂和磁对准对CoFe2O4多晶陶瓷磁致伸缩性能的显著改善

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2025-12-22 DOI: 10.1016/j.jeurceramsoc.2025.118108

Jiheng Li, Miao Liu, Jiawang Cheng, Xiaoqian Bao, Xuexu Gao

As for cobalt ferrites, a type of magnetic ceramic, achieving a balance between high magnetostriction and low driving magnetic fields continues to be a significant challenge. In this work, a series of Cu substituted cobalt ferrites were synthesized using the compression molding and magnetic field assisted injection molding respectively. All prepared cobalt ferrites exhibited a single-phase spinel structure. The Cu-doped cobalt ferrites showed a significant increase in grain size. The substitution slightly decreased the saturation magnetization. The significant decrease of coercivity indicated the improved soft magnetic properties of the Cu-doped cobalt ferrites. The < 001 > orientation was achieved by magnetic aligning during injecting molding process in all Cu-doped samples. The maximum magnetostriction of −460 ppm was obtained. The strain sensitivity improved to 0.477 ppm/Oe, marking a 363 % increase. The corresponded magnetic field decreased to 778 Oe. The notable increase in magnetostriction and strain sensitivity resulted from the combined effects of Cu doping and < 100 > orientation.

至于钴铁氧体，一种磁性陶瓷，实现高磁致伸缩和低驱动磁场之间的平衡仍然是一个重大的挑战。本文分别采用压缩成型和磁场辅助注射成型的方法合成了一系列Cu取代钴铁氧体。所有制备的钴铁氧体均表现为单相尖晶石结构。cu掺杂的钴铁氧体晶粒尺寸明显增大。取代略微降低了饱和磁化强度。矫顽力的显著降低表明掺铜钴铁氧体的软磁性能得到了改善。在所有cu掺杂样品的注射成型过程中，通过磁对准实现了<； 001 >； 取向。最大磁致伸缩量为- 460 ppm。应变灵敏度提高到0.477 ppm/Oe，提高了363 %。对应的磁场减小到778 Oe。Cu掺杂和<； 100 >； 取向的共同作用导致了磁致伸缩和应变灵敏度的显著提高。

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引用次数: 0

Al2O3-tuned glass-phase evolution enabling dual-mode heat conduction in hexagonal boron nitride ceramics 六方氮化硼陶瓷中al2o3调谐玻璃相演化实现双模热传导

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2025-12-23 DOI: 10.1016/j.jeurceramsoc.2025.118112

Yanli Ye , Zijun He , Xiaoqing Liu , Ningning Li , Yuxuan Wang , Zheng Qi , Junlin Xie

Hexagonal boron nitride (h-BN) is a promising structural ceramic for high-temperature applications but suffers from poor sintering and low strength. In this study, h-BN ceramics were reinforced using Y₂O₃-Al₂O₃-SiO₂ (YAS) oxides additives to regulate glass-phase evolution and optimize thermophysical properties. Varying the Al₂O₃ content transformed the additive phase from crystalline Y₂Si₂O₇ to amorphous Y-Si-Al-O glass, promoting liquid-phase sintering, improving platelet alignment, and enhancing densification. The optimized composition (YSA10) achieved the highest relative density (88.28 %) and superior thermal conductivity (155 W·m⁻¹·K⁻¹ at room temperature; 66 W·m⁻¹·K⁻¹ at 1000 °C). The reduced conductivity decay above 600 °C suggests the emergence of photon-mediated transport through the semi-transparent glass phase, supplementing phonon conduction at elevated temperatures. These findings reveal a novel dual-mode heat conduction mechanism in oxide-modified h-BN ceramics and establish a new paradigm for designing high-temperature ceramics with integrated phonon-photon heat transport through controlled glass-phase engineering.

六方氮化硼（h-BN）是一种很有前途的高温结构陶瓷，但存在烧结性能差、强度低等缺点。在本研究中，使用Y2O3-Al2O3-SiO2 （YAS）氧化物添加剂对h-BN陶瓷进行增强，以调节玻璃相的演化并优化热物理性能。改变Al2O3含量可使添加相由Y2Si2O7结晶转变为Y-Si-Al-O非晶玻璃，促进液相烧结，改善血小板排列，增强致密性。优化后的成分（YSA10）具有最高的相对密度（88.28 %）和优异的导热性（155 W·m（⁻¹·K）在室温下；66 W·m（⁻¹·K）在1000℃下）。在600°C以上，电导率衰减降低，表明通过半透明玻璃相出现了光子介导的输运，补充了高温下的声子传导。这些发现揭示了氧化物修饰h-BN陶瓷的新型双模热传导机制，并通过控制玻璃相工程为设计声子光子集成热输运高温陶瓷建立了新的范例。

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引用次数: 0

Significantly enhanced dielectric and nonlinear electrical properties in CCTO ceramics prepared via high–energy ball milling with fine–grained IBLC microstructure 采用高能球磨法制备具有细晶IBLC微结构的CCTO陶瓷，显著提高了陶瓷的介电性能和非线性电学性能

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2026-01-05 DOI: 10.1016/j.jeurceramsoc.2026.118126

Kwanruthai Sankham , Jurimart Wongsricha , Sirion Srilarueang , Jutapol Jumpatam , Nutthakritta Phromviyo , Pornjuk Srepusharawoot , Prasit Thongbai

CaCu₃Ti₄O₁₂ ceramics were synthesized using high–energy ball milling (HEBM) and conventional ball milling (CBM) methods. The HEBM powder produced fine, high–quality powder with improved reactivity, facilitating the formation of dense and uniform ceramic microstructures with fine grains ranging from ∼1.1–1.7 μm. Optimally sintered HEBM ceramics exhibited high ε′ of ∼3000–4000 and exceptionally low tanδ∼0.026–0.009 at 1 kHz. The ε′ of HEBM ceramics remained stable across a broad frequency range (100 Hz to 1 MHz) and demonstrated excellent temperature stability from −55 to 150 °C, fulfilling the X8R capacitor standard, while CBM ceramics exhibited strong temperature–dependent ε′. Additionally, HEBM ceramics displayed significantly improved nonlinear current–voltage behavior, with a high nonlinear coefficient of 24.1 and a breakdown strength over ten times higher than that of CBM ceramics. Impedance and X–ray photoelectron analyses confirmed enhanced dielectric and nonlinear properties resulted mainly from improved grain boundaries.

采用高能球磨法（HEBM）和常规球磨法（CBM）合成了cuu3ti4o12陶瓷。HEBM粉末制备出了精细、高质量的粉末，提高了反应性，有利于形成致密、均匀的陶瓷微结构，细晶粒范围为~ 1.1 ~ 1.7 μm。最佳烧结的HEBM陶瓷在1 kHz时表现出高ε′~ 3000-4000和极低的tanδ ~ 0.026-0.009。HEBM陶瓷的ε′在较宽的频率范围内（100 Hz至1 MHz）保持稳定，并且在- 55至150°C范围内表现出优异的温度稳定性，满足X8R电容器标准，而CBM陶瓷则表现出强烈的温度依赖性ε′。此外，HEBM陶瓷的非线性电流-电压行为显著改善，其非线性系数高达24.1，击穿强度比CBM陶瓷高10倍以上。阻抗和x射线光电子分析证实了电介质和非线性性能的增强主要是由于晶界的改善。

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引用次数: 0

Composite scaffolds based on mesoporous bioactive glasses and Sr,Mg-doped calcium phosphates as cell carriers for bone tissue engineering 介孔生物活性玻璃与掺锶、镁磷酸钙作为骨组织工程细胞载体的复合支架

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society

Pub Date : 2026-07-01 Epub Date: 2026-01-07 DOI: 10.1016/j.jeurceramsoc.2026.118129

Tamara Matic , Farah Daou , Jelena Petrovic , Biljana Ristić , Andrea Cochis , Lia Rimondini , Djordje Veljovic

Scaffolds in bone tissue engineering (BTE) function as temporary 3D support for cells, recreating a bone-like microenvironment that promotes their adhesion, proliferation, and differentiation. Calcium phosphate (CaP) ceramics are widely used in orthopedics owing to their similarity to biological apatite, while ion doping and bioactive glass addition further enhance biological activity and mechanical stability. Here, composite scaffolds were fabricated from Sr,Mg-doped CaP combined with pristine or Sr,Mg-doped mesoporous bioactive glass nanoparticles (MBGNs). MBGNs incorporation promoted α-tricalcium phosphate phase formation and significantly improved the compressive strength via reduced microporosity through liquid-phase sintering without compromising the macroporosity. Bioactivity was confirmed under dynamic perfusion. Obtained scaffolds supported attachment and growth of human bone marrow stromal cells and endothelial cells, with enhanced pro-angiogenic properties. These results highlight Sr,Mg-doped CaP/MBGN composites as a mechanically reinforced, osteogenic and pro-angiogenic platform for BTE.

在骨组织工程（BTE）中，支架作为细胞的临时三维支撑，重建一个骨样微环境，促进细胞的粘附、增殖和分化。磷酸钙（CaP）陶瓷因其与生物磷灰石的相似性而被广泛应用于骨科，而离子掺杂和生物活性玻璃的加入进一步增强了生物活性和机械稳定性。本文将Sr， mg掺杂的CaP与原始或Sr， mg掺杂的介孔生物活性玻璃纳米颗粒（MBGNs）结合制成复合支架。MBGNs的掺入促进了α-磷酸三钙相的形成，在不影响宏观孔隙率的情况下，通过液相烧结降低微孔隙率，显著提高了材料的抗压强度。动态灌注下确认生物活性。获得的支架支持人骨髓基质细胞和内皮细胞的附着和生长，具有增强的促血管生成特性。这些结果突出了Sr， mg掺杂CaP/MBGN复合材料作为BTE的机械增强，成骨和促血管生成平台。

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引用次数: 0