Journal of The European Ceramic Society最新文献_第2页

High-performance SiO2f/SiO2 wave-transparent composites based on laminated puncture method 基于层压穿刺法的高性能SiO2f/SiO2波透明复合材料

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

Journal of The European Ceramic Society

Pub Date : 2026-01-27 DOI: 10.1016/j.jeurceramsoc.2026.118181

Shuping Wen , Wei Hu , Zhilin Chen , Zhilin Tian , Jijin Huang , Liya Zheng , Bin Li

SiO_2f/SiO₂ composites have significant potential in radome applications. However, traditional 2D weaving suffers from weak interlayer bonding, while 2.5D and 3D weaving are costly. To overcome these limitations, a laminated puncture reinforcement architecture was introduced into SiO_2f/SiO₂ composites. The results show that the laminated puncture structure effectively enhances the load-bearing capability, achieving flexural and compressive strengths of 93 MPa and 146 MPa, respectively. Digital image correlation (DIC) analysis confirms that the Z-directional fibers suppress shear-band propagation and delay catastrophic failure. Furthermore, the composites demonstrate excellent ablation resistance with a linear rate of 0.151 mm/s and a mass rate of 0.088 g/s, governed by surface melting, volatilization, and mechanical erosion. In addition, stable electromagnetic transparency is maintained with a dielectric constant of approximately 3 and a dielectric loss tangent value below 0.004. This cost-efficient fabrication method delivers state-of-the-art comprehensive performance, enabling practical engineering applications.

SiO2f/SiO2复合材料在天线罩领域具有巨大的应用潜力。然而，传统的2D织造存在层间粘合较弱的问题，而2.5D和3D织造成本较高。为了克服这些限制，在SiO2f/SiO2复合材料中引入了层压穿刺增强结构。结果表明：叠层穿刺结构有效提高了结构的承载能力，其抗折强度和抗压强度分别达到93 MPa和146 MPa。数字图像相关（DIC）分析证实了z向光纤抑制剪切带传播和延迟灾难性失效。此外，复合材料表现出良好的抗烧蚀性能，线性速率为0.151 mm/s，质量速率为0.088 g/s，受表面熔化、挥发和机械侵蚀的影响。此外，介质常数约为3，介质损耗正切值低于0.004，保持了稳定的电磁透明度。这种经济高效的制造方法提供了最先进的综合性能，使实际工程应用成为可能。

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引用次数: 0

Lattice engineering via large-radius cation doping: A novel strategy for CMAS-resistant high-entropy (Nd0.2Y0.2Er0.2Yb0.2Lu0.2)2SiO5 大半径阳离子掺杂晶格工程：抗cmas高熵（Nd0.2Y0.2Er0.2Yb0.2Lu0.2）2SiO5的新策略

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

Journal of The European Ceramic Society

Pub Date : 2026-01-27 DOI: 10.1016/j.jeurceramsoc.2026.118178

Qicheng Li , Xiufang Cui , Zhuo Chen , Zhijia Zhang , Yuqi Dong , Shinan Hu , Shitong Chen , Tong Shang , Yongchao Fang , Guo Jin

Three high-entropy silicates were synthesized: (Y_0.25Er_0.25Yb_0.25Lu_0.25)₂SiO₅ (4HE), (Nd_0.2Y_0.2Er_0.2Yb_0.2Lu_0.2)₂SiO₅ (NdHE), and (La_0.2Y_0.2Er_0.2Yb_0.2Lu_0.2)₂SiO₅ (LaHE)，with systematic analysis of size disorder effects on crystal structure and phase composition. Using Y₂SiO₅ as a control, the corrosion resistance of these rare earth silicates was compared, and the influence of La^3 + and Nd³⁺ doping on CMAS corrosion was analyzed. The research results demonstrate that La doping induces the formation of 7.51 wt% X1 phase due to high size disorder (δ = 0.0854), whereas NdHE maintains a nearly single-phase X2-type structure. NdHE exhibits the optimal CMAS corrosion resistance in isothermal CMAS corrosion experiments conducted at both 1400 ℃ and 1500 ℃. This is attributed to Nd³⁺ doping accelerating the precipitation of apatite-phase corrosion products and altering their growth orientation, thereby enabling rapid formation of a continuous, dense corrosion layer at the melt-substrate interface, which effectively impedes further rapid penetration of CMAS.

合成了（Y0.25Er0.25Yb0.25Lu0.25）2SiO5 （4HE）、（Nd0.2Y0.2Er0.2Yb0.2Lu0.2）2SiO5 （NdHE）和（La0.2Y0.2Er0.2Yb0.2Lu0.2）2SiO5 （LaHE）三种高熵硅酸盐，并系统分析了尺寸无序对晶体结构和相组成的影响。以Y2SiO5为对照，比较了这些稀土硅酸盐的耐蚀性，分析了La3 +和Nd3+掺杂对CMAS腐蚀的影响。研究结果表明，La掺杂由于高尺寸无序性（δ = 0.0854），形成了7.51 wt% X1相，而NdHE则保持了接近单相的x2型结构。在1400℃和1500℃的CMAS等温腐蚀实验中，NdHE均表现出最佳的抗CMAS腐蚀性能。这是由于Nd3+的掺杂加速了磷灰石相腐蚀产物的析出，改变了它们的生长方向，从而在熔体-衬底界面快速形成连续致密的腐蚀层，有效地阻碍了CMAS的进一步快速渗透。

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引用次数: 0

Unraveling the high-temperature oxidation mechanism and its impact on tribological performance of Mo2VAlC2 MAX phase Mo2VAlC2 MAX相高温氧化机理及其对摩擦学性能的影响

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

Journal of The European Ceramic Society

Pub Date : 2026-01-27 DOI: 10.1016/j.jeurceramsoc.2026.118177

Wanjie Sun , Jie Yu , Weiguo Wei , Xiao Jiang , Yan Zhang , Jiafeng Tang , Ying Liu , Lu Wang , Chang Liu

This study investigates the high-temperature oxidation behavior and tribological performance of a novel o-MAX Mo₂VAlC₂. The oxidation behavior of Mo₂VAlC₂ bulk materials within the range of room temperature to 800 ℃ was examined and analyzed by TGA-DSC, XRD, and XPS. The results revealed the multi-stage oxidation process of Mo₂VAlC₂, which exhibited good oxidation resistance below 600 ℃. As the temperature rises, the formation of volatile MoO₃ leads to the catastrophic oxidation of Mo₂VAlC₂, eventually generating an oxide layer primarily composed of Al₂(MoO₄)₃ with superior lubricating properties at 800 ℃. The coefficient of friction decreases significantly from 0.503 at room temperature to 0.210 at 800 ℃. Additionally, the wear mechanism changes from fatigue-abrasive wear to oxidation wear with increasing temperature. This study reveals the oxidation-tribological coupling behavior of Mo₂VAlC₂ and provides insights for designing MAX phases with enhanced high-temperature self-lubricating properties.

本文研究了新型o-MAX Mo2VAlC2的高温氧化行为和摩擦学性能。采用热重分析（TGA-DSC）、x射线衍射（XRD）和XPS分析了Mo2VAlC2块状材料在室温~ 800℃范围内的氧化行为。结果表明，Mo2VAlC2采用多级氧化工艺，在600℃以下具有良好的抗氧化性能。随着温度的升高，挥发性MoO3的形成导致Mo2VAlC2发生突变氧化，最终在800℃形成以Al2(MoO4)3为主的氧化层，具有优异的润滑性能。摩擦系数由室温时的0.503显著降低到800℃时的0.210。随着温度的升高，磨损机制由疲劳磨粒磨损转变为氧化磨损。该研究揭示了Mo2VAlC2的氧化-摩擦耦合行为，为设计具有增强高温自润滑性能的MAX相提供了见解。

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引用次数: 0

A HfSiO4-based coating with stronger oxidation resistance defending C/C composites at 1773 K and 1973 K in air 一种在空气中1773 K和1973 K下具有较强抗氧化性能的hfsio4基涂层

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

Journal of The European Ceramic Society

Pub Date : 2026-01-27 DOI: 10.1016/j.jeurceramsoc.2026.118180

Xiaofei Zhu , Jian Zhang , Ruicong Chen , In-Ho Jung , Yulei Zhang

The high-temperature oxidation of Carbon/carbon (C/C) composites limits their application as hot-end structural materials in the aerospace industry. To solve this problem, a HfSiO₄-based coating with strong oxygen blocking ability on the C/C composites was fabricated by a compound method of slurry brushing and in-situ oxidation sintering. The C/C composites were protected by the coating for 2257 h at 1773 K, 121 h at 1973 K in air, with a mass loss of about 0.50 wt%, respectively. Such good performance was attributed to the Hf-Si-O oxygen barrier layer with abundant and uniformly distributed HfSiO₄ particles (Volume accounting for over 65 %). The HfSiO₄ particles could reduce the volatile mass of the SiO₂ glass, and relieve the difference of coefficient of thermal expansion (CTE) between the SiC inner coating and SiO₂ in the outer coating. More importantly, the oxygen diffusion resistance of the Hf-Si-O layer with HfSiO₄ as the main phase was significantly enhanced, providing a basis for optimizing the composition of oxidation resistance coatings at 1973 K and above in air.

碳/碳（C/C）复合材料的高温氧化限制了其作为热端结构材料在航空航天工业中的应用。为解决这一问题，采用浆液涂刷和原位氧化烧结复合方法，在C/C复合材料表面制备了具有强阻氧能力的hfsio4基涂层。在1773 K和1973 K下，涂层对C/C复合材料的保护时间分别为2257 h和121 h，质量损失分别为0.50 wt%。这种良好的性能归功于Hf-Si-O氧障层中含有丰富且均匀分布的HfSiO4颗粒（体积占比超过65% %）。HfSiO4颗粒可以降低SiO2玻璃的挥发质量，减小SiC内涂层与SiO2外涂层的热膨胀系数差异。更重要的是，以HfSiO4为主要相的Hf-Si-O层的抗氧扩散能力显著增强，为优化1973 K及以上空气中抗氧化涂层的组成提供了依据。

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引用次数: 0

The effect of metal doping on the piezoelectric response of AlN film ultrasonic transducers 金属掺杂对AlN膜超声换能器压电响应的影响

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

Journal of The European Ceramic Society

Pub Date : 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118169

Xiaomei Zeng , Heng Jiang , Rakhimbergan Rakhimov , Shavkat Yuldashev , Changwei Zou , Jun Zhang , Oleksandr Pohrebniak , Bing Yang , Sheng Liu , Vasiliy O. Pelenovich

Piezoelectric AlN thick films doped with Cr, Cu, Nb, Sc, Ta, Ti, Y, Zn, and Zr were deposited on Si and stainless-steel substrates using reactive RF magnetron sputtering. Planar Al sputter target with asymmetrically embedded disk of doping metal was employed in this study. The concentration of doping metal in the deposited films was a function of the distance between the substrate and the inlaid disk. Analysis of the film structure showed that, with the exception of ScAlN and ZnAlN films, the columnar structure and piezoelectric response of doped films were gradually degraded with increasing metal concentration. The piezoelectric d₃₃^eff constants of ScAlN (6.7 at% of Sc), ZnAlN (1.6 at% of Zn), NbAlN (1.2 at% of Nb), TiAlN (0.7 at% of Ti), and AlN films are 10.1 ± 0.5 pC/N, 5.3 ± 0.5 pC/N, 5.2 ± 0.5 pC/N, 5.2 ± 0.5 pC/N, and 5.6 ± 0.5 pC/N, respectively. Pulse-echo response of these films was studied using ultrasonic transducers and correlation between their piezoelectric d₃₃^eff constant and amplitude of the response was found.

采用反应性射频磁控溅射技术在Si和不锈钢衬底上制备了掺杂Cr、Cu、Nb、Sc、Ta、Ti、Y、Zn和Zr的压电AlN厚膜。采用不对称嵌入掺杂金属盘的平面铝溅射靶。沉积膜中掺杂金属的浓度是衬底与镶嵌盘之间距离的函数。对薄膜结构的分析表明，除了ScAlN和ZnAlN薄膜外，掺杂薄膜的柱状结构和压电响应随着金属浓度的增加而逐渐退化。的压电d33eff常量ScAlN (Sc) 6.7 %,ZnAlN锌(1.6 %),NbAlN Nb(1.2 %),TiAlN (Ti) 0.7 %,和AlN电影10.1 ±0.5 pC / N, 5.3±0.5 pC / N, 5.2±0.5 pC / N, 5.2±0.5 pC / N,和5.6 ±0.5 pC / N,分别。利用超声换能器研究了这些薄膜的脉冲回波响应，发现了它们的压电d33eff常数与响应幅度之间的相关性。

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引用次数: 0

Irradiation performance of high-entropy rare earth titanate ceramics 高熵钛酸稀土陶瓷的辐照性能

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

Journal of The European Ceramic Society

Pub Date : 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118167

Xinghua Su , Yangliu Tian , Chengguang Lou , Mengyao Wang , Qiang Tian , Hui Zeng , Xiao Deng , Bo Zhou , Jian Zhang

High-entropy ceramics are interesting candidates for immobilization of high-level radioactive waste. However, the link between radiation resistance and configuration entropy is seldom studied. In this work, the irradiation performances of high-entropy ceramics (Y_1/8Sm_1/8Eu_1/8Gd_1/8Dy_1/8Ho_1/8Er_1/8Yb_1/8)₂Ti₂O₇ (8HETC), and (Y_1/5Sm_1/5Eu_1/5Gd_1/5Yb_1/5)₂Ti₂O₇ (5HETC), as well as Gd₂Ti₂O₇ ceramic (TC) under 800 keV Kr²⁺ ion irradiation were studied. It was found that the resistance to radiation-induced amorphization was enhanced with the increase of configuration entropy. 8HETC with a high configuration entropy of 2.08 R demonstrated the high irradiation resistance compared to 5HETC and TC. The formation energies of cation antisite defects and anion Frenkel defects were decreased with the increase of the configuration entropy, which was suggested to account for the highest irradiation resistance of 8HETC. This study provides the insights into the relationship between configurational entropy and radiation resistance of high-entropy ceramics, which is helpful to design advanced nuclear engineering materials with excellent radiation resistance.

高熵陶瓷是高放射性废物固定化的有趣候选材料。然而，辐射电阻与组态熵之间的关系却很少被研究。本文研究了高熵陶瓷（Y1/8Sm1/8Eu1/8Gd1/8Dy1/8Ho1/8Er1/8Yb1/8）2Ti2O7 （8HETC）、（Y1/5Sm1/5Eu1/5Gd1/5Yb1/5）2Ti2O7 （5HETC）以及Gd2Ti2O7陶瓷（TC）在800 keV Kr2+离子辐照下的辐照性能。结果表明，随着组态熵的增大，材料抗辐射非晶化能力增强。构型熵为2.08 R的8HETC比5HETC和TC具有更高的耐辐照性。阳离子对位缺陷和阴离子Frenkel缺陷的形成能随着构型熵的增加而减小，这可能是8HETC耐辐照性能最高的原因。该研究揭示了高熵陶瓷的构型熵与抗辐射性能之间的关系，有助于设计具有优异抗辐射性能的先进核工程材料。

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引用次数: 0

Achieving superior energy storage density in (Bi0.5Na0.5)0.94Ba0.06TiO3-based high-entropy ceramics through a collaborative optimization strategy 通过协同优化策略实现（Bi0.5Na0.5）0.94 ba0.06 tio3基高熵陶瓷优异的储能密度

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

Journal of The European Ceramic Society

Pub Date : 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118168

Jihang Liu , Fan Zhang , Meiyue Li , Yiwen Niu , Zhiqiang Zhang , Xueqiong Lei , Zhan Jie Wang

Dielectric capacitors have drawn significant attention in pulsed power devices due to their high power density and fast charge-discharge speed. However, the insufficient energy storage density (W_rec) and efficiency (η) seriously constrain their practical applications. To address this limitation, the present work employed a collaborative optimization strategy to develop (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃-based high-entropy ceramics (HECs), aiming to enhance the energy storage characteristics of lead-free ceramics. This strategy induces synergistic effects, including grain refinement, enhancing dielectric relaxation, suppressing interface polarization, expanding bandgap, and forming polar nanodomains. These modifications contribute to significantly improving the electrical breakdown strength (E_b) and η. Notably, superior W_rec ∼ 9.09 J/cm³ and η∼ 82.4 % at E_b of 696 kV/cm are attained in [((Bi_0.5Na_0.5)_0.94Ba_0.06)_0.65(Sr_0.5Ca_0.5)_0.35]_0.94Nd_0.06Ti_0.95(Zr_1/2Hf_1/2)_0.05O₃ HEC, accompanied by excellent temperature stability, frequency stability and charge-discharge performance. The remarkable enhancement in energy storage properties validates that high-entropy synergistic strategy represents an effective approach for advancing lead-free energy storage ceramics.

介质电容器以其高功率密度和快速的充放电速度在脉冲功率器件中引起了广泛的关注。然而，储能密度（Wrec）和效率（η）的不足严重制约了其实际应用。为了解决这一限制，本工作采用协同优化策略开发了基于（Bi0.5Na0.5）0.94 ba0.06 tio3的高熵陶瓷（HECs），旨在提高无铅陶瓷的储能特性。该策略诱导了协同效应，包括晶粒细化、增强介电弛豫、抑制界面极化、扩大带隙和形成极性纳米畴。这些改进有助于显著提高电击穿强度（Eb）和η。值得注意的是，在[((Bi0.5Na0.5)0.94Ba0.06)0.65(Sr0.5Ca0.5)0.35]0.94Nd0.06Ti0.95(Zr1/2Hf1/2) 0.050 o3 HEC中，获得了优异的wrc ~ 9.09 J/cm³ 和η ~ 82.4 % (Eb = 696 kV/cm)，并具有良好的温度稳定性、频率稳定性和充放电性能。储能性能的显著提高验证了高熵协同策略是推进无铅储能陶瓷的有效途径。

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引用次数: 0

La3 + modified BaBi4Ti4O15 bismuth layer-structured ceramics toward high energy storage density and efficiency La3 +改性BaBi4Ti4O15铋层结构陶瓷朝着高能量存储密度和效率的方向发展

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

Journal of The European Ceramic Society

Pub Date : 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118170

Fanfei Xu , Qian Xiong , Li Ma , Chengjian Huang , Zhenyong Cen , Rui Huang , Sasipohn Prasertpalichat , Nengneng Luo

Owing to alternate (Bi₂O₂)²⁺ layers and perovskite blocks structures, BaBi₄Ti₄O₁₅ ferroelectric ceramic exhibits high breakdown strengthen, making it promising in energy storage applications. However, the substantial hysteresis and remnant polarization under electric field impairs its energy storage performance. In this work, rare-earth ion La³⁺ was added into BaBi₄Ti₄O₁₅ to form a new solid solution BaBi_4-xLa_xTi₄O₁₅ (BBLTx) to address the problem and simultaneously optimize the energy storage performance. Interestingly, the BBLTx ceramics demonstrated improved relaxor characteristic and reduced grain size, which significantly reduced the polarization hysteresis while increased the breakdown strength. Notably, the BBLT0.9 ceramic showcased high recoverable energy density of 6.7 J/cm³ and ultrahigh efficiency up to 93.5 %, under an applied electric field of 820 kV/cm. This work highlights the significant potential of BBT-based lead-free ceramics for advanced energy storage applications and provides novel insights into performance optimization strategies through functional modification.

由于替代（Bi2O2）2+层和钙钛矿块结构，BaBi4Ti4O15铁电陶瓷具有高击穿强度，使其在储能应用中具有前景。然而，电场作用下的大量滞后和残余极化影响了其储能性能。本文将稀土离子La3+加入到BaBi4Ti4O15中，形成一种新的固溶体BaBi4-xLaxTi4O15 （BBLTx）来解决这一问题，同时优化储能性能。有趣的是，BBLTx陶瓷的弛豫特性得到改善，晶粒尺寸减小，极化滞后显著降低，击穿强度提高。值得注意的是，在820 kV/cm的电场下，BBLT0.9陶瓷的可回收能量密度高达6.7 J/cm3，效率高达93.5 %。这项工作突出了基于bbt的无铅陶瓷在先进储能应用中的巨大潜力，并通过功能修改为性能优化策略提供了新的见解。

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引用次数: 0

3D analysis of abnormal grain growth in calcia doped alumina in the presence of large pores 钙掺杂氧化铝中存在大孔隙时异常晶粒生长的三维分析

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

Journal of The European Ceramic Society

Pub Date : 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118173

Daniel P. DeLellis , Yi Wang , Vivekanand Muralikrishnan , Joel B. Harley , Michael R. Tonks , Amanda R. Krause

Abnormal grain growth has been previously found to increase with the inclusion of large pores (∼60 µm in diameter) in 80 ppm calcium doped alumina. However, the two-dimensional analysis could not accurately describe the proximity of the abnormal grains and pores to establish a correlation. This study uses laboratory-based diffraction contrast tomography and x-ray computed tomography to spatially map the pores and abnormal grains in 3D. A preference towards the formation of abnormal grains near large pores is found when compared to all potential sites. This finding supports that the pores may be a nucleation site for complexion transitions that promote abnormal grain growth. The growth of the abnormal grains in a subsequent heat treatment at 1600°C for 16 hrs was also studied. The elongation along the principal axes is similar for both small and large grains, again supporting that abnormal grain growth was facilitated by a complexion transition.

先前发现，在80 ppm的掺钙氧化铝中，随着大孔隙（直径约60 µm）的加入，异常晶粒生长会增加。然而，二维分析无法准确描述异常颗粒与孔隙的接近程度，无法建立相关性。本研究利用实验室衍射对比层析成像和x射线计算机层析成像技术对孔隙和异常颗粒进行三维空间映射。与所有可能的位置相比，发现在大孔隙附近倾向于形成异常晶粒。这一发现支持了孔隙可能是促进异常晶粒生长的肤色转变的成核部位。在随后的1600℃16小时热处理中，还研究了异常晶粒的生长情况。大晶粒和小晶粒沿主轴的延伸率相似，再次证明了肤色转变促进了晶粒的异常生长。

引用次数: 0

Tailoring microstructure and properties of EuBCO superconductors: The role of precursor control and sintering kinetics EuBCO超导体的微观结构和性能：前驱体控制和烧结动力学的作用

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

Journal of The European Ceramic Society

Pub Date : 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118171

Wenyu Zhang , Xiaokai Liu , Benshuang Sun , Hetao Zhao , Nuo Cheng , Xina Liang , Wenhui Bi , Mingzhen Zhang , Yang Liu , Jilin He

This study investigates the synthesis and sintering of EuBCO superconducting targets using an optimized oxalic acid co-precipitation method. The research systematically evaluates precursor parameters, including pH, ion concentration, and reaction temperature, identifying pH as the most critical factor. Optimal synthesis conditions (pH 2, 0.10 mol/L, 60℃) resulted in a single-phase superconducting powder following calcination at 900℃. Transmission electron microscopy (TEM) analysis confirmed a polycrystalline structure with a homogeneous distribution of elements. Sintering studies revealed that temperature significantly influences densification, while holding time further enhances microstructural homogenization. The densification activation energy, calculated from the main sintering curve (MSC), was found to be 326 kJ/mol. Sintering at 930℃ for 600 min achieved optimal properties, including a shrinkage of 23.58 %, a density of 6.19 g/cm³, a room-temperature resistivity of 1.99 mΩ·cm, and a flexural strength of 62.41 MPa.

采用优化的草酸共沉淀法，研究了EuBCO超导靶材的合成和烧结。本研究系统地评价了前驱体参数，包括pH、离子浓度、反应温度，确定pH是最关键的因素。最佳合成条件为pH 2, 0.10 mol/L, 60℃，900℃煅烧得到单相超导粉体。透射电子显微镜（TEM）分析证实其为多晶结构，元素分布均匀。烧结研究表明，温度对致密化有显著影响，保温时间进一步促进了微观组织的均匀化。由主烧结曲线（MSC）计算得到的致密化活化能为326 kJ/mol。烧结温度为930℃，烧结时间为600 min，收缩率为23.58 %，密度为6.19 g/cm3，室温电阻率为1.99 mΩ·cm，抗弯强度为62.41 MPa。

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引用次数: 0