Journal of The European Ceramic Society最新文献_第6页

FORC applications in BaTiO₃-based ferroelectric materials and related capacitors FORC在BaTiO₃基铁电材料及相关电容器中的应用

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: 2026-01-16 DOI: 10.1016/j.jeurceramsoc.2026.118149

Tian Wang , Jingyi Hao , Lei Zhang , Min Chen , Yanna Cheng , Feng Yu , Jianfeng Li , Yiting Guo , Haixia Liu

BaTiO₃(BT)-based ferroelectric materials are pivotal for high-energy-density capacitors, However, their performance is limited by high remanent polarization and associated hysteresis losses. Traditional characterization methods often fail to resolve local polarization behaviors, which hinders the rational design of materials with enhanced energy storage properties. This review highlights the necessity and advancement of the First-Order Reversal Curve (FORC) technique. Based on the Preisach model, FORC analysis is effective in disentangling reversible and irreversible polarization contributions at the microstructural level. We systematically summarize its recent applications in BT-based ceramics, thin films, and multilayer ceramic capacitors (MLCCs), focusing on composition design, grain and domain engineering, defect control, and interface optimization. The FORC method offers insights into the relationships between dynamic domain switching and energy storage properties, thereby enabling targeted improvements in energy density and efficiency. This review underscores the critical role of FORC in guiding the development of next-generation ferroelectric energy storage devices.

BaTiO₃（BT）基铁电材料是高能量密度电容器的关键，然而，它们的性能受到高剩余极化和相关滞后损失的限制。传统的表征方法往往不能解决局部极化行为，这阻碍了增强储能性能材料的合理设计。本文综述了一阶反转曲线（FORC）技术的必要性和进展。基于Preisach模型，FORC分析在微观结构水平上可以有效地分离可逆和不可逆极化贡献。我们系统地总结了其在bt基陶瓷、薄膜和多层陶瓷电容器（mlcc）中的最新应用，重点是成分设计、晶粒和畴工程、缺陷控制和界面优化。FORC方法提供了动态域切换和能量存储特性之间关系的见解，从而能够有针对性地提高能量密度和效率。这篇综述强调了FORC在指导下一代铁电储能装置发展中的关键作用。

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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 : 2026-07-01 Epub 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

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 : 2026-07-01 Epub 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

Enhancing the spectral selectivity of MgTiO3 via Mn doping for high temperature solar thermal conversion Mn掺杂提高MgTiO3在高温太阳热转换中的光谱选择性

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: 2026-01-17 DOI: 10.1016/j.jeurceramsoc.2026.118152

Ziqin Lin , Tianxia Xie , Zhuolin Xie , Anqi Dai , Yang Yuan , Peng Sun , Yanqi Song , Zhenggang Fang , Chunhua Lu

Solar absorbers are vital for concentrated solar power (CSP) systems, yet spectral selectivity solar absorbers (SSAs) struggle with high-temperature stability in air. This study introduced Mn ions into MgTiO₃ (MTO) via a high temperature solid-phase synthesis technique to optimize the spectral selectivity. Unlike conventional doping that increased both absorptance and emittance, MgTi_0.4Mn_0.6O₃ (MTMO-0.6) boosted solar absorptance (α = 0.85) while maintaining low emittance (ε = 0.39, 1073.15 K) in the 2.5–15 μm wavelength range. Besides, the material retained high spectral selectivity (α/ε = 0.84/0.41) after heat treatment at 800 °C in air atmosphere for 90 h in total (9 h cycles⁻¹, 10 cycles), showing excellent thermal stability. Moreover, under concentrated solar irradiation of 10.83 W·cm⁻², MTMO-0.6 sample reached an equilibrium temperature of 848 ℃, surpassing that of MTO and SiC. The proposed Mn-doped MgTiO₃ has the potential as a solar absorber for high temperature solar thermal conversion.

太阳能吸收体对于聚光太阳能发电（CSP）系统至关重要，但光谱选择性太阳能吸收体在空气中的高温稳定性方面存在问题。本研究通过高温固相合成技术将Mn离子引入到MgTiO3 （MTO）中，以优化其光谱选择性。与常规掺杂提高吸收度和发射度不同，MgTi0.4Mn0.6O3 （MTMO-0.6）在2.5 ~ 15 μm波长范围内提高了太阳吸收率（α = 0.85），同时保持了较低的发射度（ε = 0.39, 1073.15 K）。此外，材料在800℃空气中热处理90 h（9 h循环- 1,10循环）后，仍保持较高的光谱选择性（α/ε = 0.84/0.41），表现出优异的热稳定性。此外，在10.83 W·cm−2的太阳辐照下，MTMO-0.6样品达到了848℃的平衡温度，超过了MTO和SiC。所提出的mn掺杂MgTiO3具有作为高温太阳能热转换的太阳能吸收剂的潜力。

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引用次数: 0

Reducing heat treatment time and temperature for dense crystalline ytterbium disilicate environmental barrier coatings 减少致密结晶二硅酸镱环境屏障涂层的热处理时间和温度

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: 2026-01-29 DOI: 10.1016/j.jeurceramsoc.2026.118190

P. Khamsepour , P. Bansal , D. Guay , A.C. Tavares , B. Guerreiro , R.S. Lima , K.R. Beyerlein

Ytterbium disilicate (YbDS) environmental barrier coatings (EBCs) are deposited by atmospheric plasma spray (APS) to protect aeroengine components made of SiC_fiber(f)/SiC ceramic matrix composites. During deposition, rapid solidification of molten YbDS particles upon impact creates an amorphous structure which needs to be crystallized. This study optimized crystallization heat treatment for dense (∼2 % porosity) EBCs with as-sprayed crystallinity between 10 % and 50 %. Stable ytterbium silicate phases (YbDS and Yb₂SiO₅ (YbMS)) are formed above 1200 °C, regardless of initial crystallinity. EBCs with crystallinity of 15 % produced metastable phases at 1100 °C, requiring at least 10 h to transform them into stable phases, while coatings with 50 % crystallinity formed stable phase after only 4 h. The morphology and hardness of EBCs after crystallization are shown to be comparable irrespective of the heat treatment temperature. This demonstrates that partially crystalline as-sprayed YbDS can be crystallized faster and at lower temperatures, potentially reducing production costs.

采用常压等离子喷涂（APS）技术制备了二硅酸钇（YbDS）环境屏障涂层，以保护由SiCfiber(f)/SiC陶瓷基复合材料制成的航空发动机部件。在沉积过程中，熔融的YbDS颗粒在撞击后迅速凝固，形成需要结晶的非晶结构。该研究优化了致密（~ 2 %孔隙率）EBCs的结晶热处理，其喷射结晶度在10 %至50 %之间。稳定的硅酸钇相（YbDS和yb2 SiO₅（YbMS））在1200°C以上形成，无论初始结晶度如何。结晶度为15% %的EBCs在1100℃时产生亚稳相，至少需要10 h才能转变为稳定相，而结晶度为50% %的涂层仅需要4 h即可形成稳定相。结果表明，EBCs结晶后的形貌和硬度与热处理温度无关。这表明，部分结晶的YbDS可以在更低的温度下更快地结晶，从而潜在地降低生产成本。

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引用次数: 0

Effects of oscillatory-pressure amplitude during dynamic sinter forging on the microstructure and mechanical properties of Al₂O₃–Ti(C,N) 动态烧结锻造振荡压力幅值对Al₂O₃-Ti （C，N）显微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: 2026-01-10 DOI: 10.1016/j.jeurceramsoc.2026.118142

Mengwen Zhang , Fanyu Meng , Na Cao , Lei Fan , Shoulei Yang

High-performance Al₂O₃-Ti(C,N) composites are critical for extreme-environment applications, yet conventional static sintering cannot simultaneously achieve full densification and strong grain-boundary bonding. Here, a dynamic sinter forging (DSF) strategy coupling sintering densification and oscillatory forging deformation was developed to activate plastic flow and defect engineering. Composites were sintered at 1600 °C with oscillatory amplitudes of 0–40 MPa (5 Hz) and a maximum pressure of 80 MPa. The flexural strength increased from 583 MPa under a pressure of 80 ± 0 MPa to 1070 MPa under 40 ± 40 MPa, representing an 83 % enhancement. TEM revealed increased dislocation densities in Al₂O₃ (2.6 ×10⁵→2.9 ×10⁶ cm⁻²) and Ti(C,N) (4.8 ×10⁶→8.2 ×10⁶ cm⁻²) and curved interfaces, shifting fracture from intergranular to transgranular, showing that defect generation and interface curvature jointly strengthen the composites. This DSF route enables concurrent densification and microstructural strengthening within a single thermal cycle, offering a general pathway to high-toughness oxide–carbonitride ceramics.

高性能Al₂O₃-Ti（C，N）复合材料对于极端环境应用至关重要，然而传统的静态烧结不能同时实现完全致密化和强晶界结合。本文提出了一种耦合烧结致密化和振荡锻造变形的动态烧结锻造（DSF）策略，以激活塑性流动和缺陷工程。复合材料在1600℃下烧结，振荡幅度为0-40 MPa(5 Hz)，最大压力为80 MPa。抗弯强度从583增加 80 MPa的压力下 ± 0 MPa - 1070 MPa 40岁以下 ± 40 MPa,代表83 %增强。透射电镜显示，Al₂O₃（2.6 ×10 5→2.9 ×10⁶cm⁻²）和Ti(C，N)（4.8 ×10 6→8.2 ×10⁶cm⁻²）的位错密度增加，界面弯曲，断裂从晶间转移到晶间，表明缺陷的产生和界面弯曲共同增强了复合材料。这种DSF途径可以在单个热循环中同时实现致密化和微观结构强化，为高韧性氧化碳氮陶瓷提供了一条通用途径。

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引用次数: 0

Enhanced thermal conductivity and sinterability of magnesia via nano-powder addition: Control of pore formation and densification 添加纳米粉提高氧化镁的导热性和烧结性：孔隙形成和致密化的控制

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.2026.118144

Dong-Myeong Kim , Hye-Jeong Jang , Young Kook Moon , Jong‑Jin Choi , Byung‑Dong Hahn , Cheol‑Woo Ahn , Jung Woo Lee , Hyun-Ae Cha

MgO ceramics are promising candidates for high thermal conductivity applications in next-generation electronics. However, their practical application is hindered by the extremely high sintering temperature and hygroscopic instability of MgO. In this study, dense MgO ceramics were achieved through the combined use of multi-scale micro/nano MgO powders and TiO₂/Nb₂O₅ additives under spark plasma sintering (SPS). Notably, 5 wt% nano-MgO combined with additives enabled densification at 1200 °C with conductivities above 41 W/m·K, demonstrating the feasibility of low-temperature processing. Finally, SPS of the optimized composition achieved nearly full density and 60 W/m·K, underscoring the synergistic effect of multi-scale mixing, additives, and applied pressure, and advancing next‑gen MgO thermal‑management materials due to improved grain-boundary connectivity and heat transport. This work provides new insights into practical route for cost-effective fabrication of high-conductivity MgO ceramics at low temperature.

MgO陶瓷是下一代电子产品中高导热应用的有前途的候选者。然而，MgO极高的烧结温度和吸湿不稳定性阻碍了它们的实际应用。在本研究中，通过火花等离子烧结（SPS），将多尺度微纳米MgO粉末与TiO2/Nb2O5添加剂结合使用，获得了致密的MgO陶瓷。值得注意的是，5 wt%的纳米mgo与添加剂相结合，在1200℃下实现了致密化，电导率高于41 W/m·K，证明了低温加工的可行性。最后，优化组合物的SPS达到了接近全密度和60 W/m·K，强调了多尺度混合、添加剂和施加压力的协同效应，并通过改善晶界连通性和热传递推进了下一代MgO热管理材料。本研究为低温高效制备高导电性MgO陶瓷提供了新的思路。

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引用次数: 0

Reactive sintered highly transparent AlON ceramics with SrO doping SrO掺杂反应烧结高透明AlON陶瓷

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: 2026-01-08 DOI: 10.1016/j.jeurceramsoc.2026.118140

Jian Yang , Weijie Han , Xiao Liao , Wentao Xu , Youfu Zhou , Maochun Hong

In this study, SrO was utilized as a novel sintering additive for fabricating high- performance AlON transparent ceramics via the reactive sintering of Al₂O₃ and AlN powders. A series of undoped and SrO-doped AlON transparent ceramics were fabricated through pressureless sintering under nitrogen atmosphere. The influence of the SrO content on the density, sintering behavior microstructure, mechanical properties and optical properties of the AlON transparent ceramics was systematically investigated. In detail, the addition of SrO (0.05 wt%–0.5 wt%) significantly enhanced densification and refine the grain size. An appropriate content of SrO (≥ 0.25 wt%) can effectively accelerate pore elimination. Notably, excessive SrO (≥0.4 wt%) induced severe aggregation of small-sized grains, resulting in defects and reduced transmittance. By employing optimized processing conditions (0.35 wt% SrO additive and reactive sintered at 1950 °C), the as-prepared AlON transparent ceramic exhibited superior optical and mechanical performance. The optimal properties included relative density of 99.9 % with average grain size of 44.5μm, an in-line transmittance of 80.2 % at 600 nm, a Vickers hardness of 17.4 ± 0.3 GPa, a haze of 3.028 %, and a critical height of impact resistance of 70 cm, with critical gravitational potential energy and critical velocity are 0.0686 J and 3.7 m·s⁻¹, respectively. Meanwhile, some inherent characteristics and difficulties in the reaction sintering process without adding sintering aids were systematically studied. These results demonstrate that SrO is an outstanding sintering additive for preparing transparent AlON ceramics.

在本研究中，SrO作为一种新型的烧结添加剂，通过Al2O3和AlN粉末的反应烧结制备了高性能的AlON透明陶瓷。在氮气气氛下通过无压烧结制备了一系列未掺杂和sro掺杂的AlON透明陶瓷。系统研究了SrO含量对AlON透明陶瓷的密度、烧结行为、微观结构、力学性能和光学性能的影响。SrO（0.05 wt% -0.5 wt%）的添加显著增强了致密化，细化了晶粒尺寸。适当的SrO含量（≥0.25 wt%）可有效促进孔隙消除。值得注意的是，过量的SrO（≥0.4 wt%）会导致小尺寸晶粒严重聚集，导致缺陷和透光率降低。采用优化的工艺条件（0.35 wt% SrO添加剂和1950°C反应烧结），制备的AlON透明陶瓷具有优异的光学和机械性能。最优属性包括相对密度99.9 %的平均粒径为44.5μm,内联的透光率80.2 % 600 海里,维氏硬度17.4 ±0.3  GPa, 3.028 %的阴霾,和耐冲击的临界高度70 厘米,与关键的重力势能和临界速度0.0686 J和3.7 m·s−1,分别。同时，系统地研究了不添加助烧剂的反应烧结工艺的一些固有特点和难点。结果表明，SrO是制备透明AlON陶瓷的优良烧结添加剂。

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引用次数: 0

Tuning the BN/SiC dual-layer interphase for superior high-temperature mechanical properties in SiCf/SiC composites 调整BN/SiC双层界面相以获得优异的SiCf/SiC复合材料高温力学性能

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: 2026-01-22 DOI: 10.1016/j.jeurceramsoc.2026.118162

Xiaochen Wu , Lianyi Wang , Yong Ma , Ruixiao Zheng , Haolin Ma , Lu Li , Yuli Chen , Chaoli Ma , Shengkai Gong

By optimizing the BN/SiC dual-layer interphase in SiC_f/SiC composites, this work significantly enhances high-temperature mechanical properties. The thickness of the SiC layer was designed to be 0 nm (000T), 500 nm (500T) and 900 nm (900T). Introducing a SiC interphase improved crack deflection, with thickness having little effect on this function. The 900T specimen exhibited excellent ultimate tensile strength (267 ± 7 MPa) and failure strain (0.89 ± 0.03 %) at 1350 °C in air. Its lower density and Young’s modulus increased the proportional limit stress and reduced the crack opening displacement (COD), minimizing the oxidation-induced fiber damage. In-situ tensile tests confirmed smaller COD in 900T than in 500T. Acoustic emission data indicated that an appropriate SiC layer thickness delays fiber fracture, maintaining mechanical properties in oxidative environments. This work provides new and deep insights for the low-cost and efficient preparation of high-performance SiC_f/SiC composites.

通过优化SiCf/SiC复合材料的BN/SiC双层界面相，显著提高了复合材料的高温力学性能。SiC层厚度设计为0 nm （000T）、500 nm （500T）和900 nm （900T）。SiC界面相的引入改善了裂纹挠度，厚度对其影响不大。900T试样在1350℃空气中表现出优异的极限抗拉强度（267 ± 7 MPa）和破坏应变（0.89 ± 0.03 %）。其较低的密度和杨氏模量增加了比例极限应力，降低了裂纹张开位移（COD），最大限度地减少了氧化引起的纤维损伤。现场拉伸试验证实900T的COD小于500T。声发射数据表明，适当的SiC层厚度可以延缓纤维断裂，保持氧化环境下的力学性能。这项工作为低成本高效制备高性能SiCf/SiC复合材料提供了新的深刻见解。

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引用次数: 0

Fabrication of α-Si3N4/Si3N4w/SiCN ceramic substrate with embedded microchannel by DLP DLP法制备嵌入微通道α-Si3N4/Si3N4w/SiCN陶瓷衬底

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: 2026-01-03 DOI: 10.1016/j.jeurceramsoc.2025.118120

Zhongya Zhang , Yongzhao Hou , Juhai Weng , Cheng Zhong , Jing Xue , Jiawei Jiang , Guangwu Wen , Xuefei Ma , Lijuan Zhang

In light of the mounting imperative for high heat dissipation packages for power devices, the DLP 3D printing technique was utilized as a preparatory measure for integrated embedded microfluidic SiCN ceramic substrates. The fabrication of SiCN composite ceramics with minimal shrinkage (25.6 ± 0.2 %) and elevated fracture toughness (4.1 ± 0.1 MPa·m^1/2) was accomplished by optimizing the Si₃N₄ whiskers filler content within the hybrid filler. The critical thermal shock temperature difference of α-Si₃N₄/Si₃N_4w/SiCN ceramics to reach 730 °C, which is 119 °C higher than α-Si₃N₄/SiCN ceramics without Si₃N₄ whiskers (621 °C). Ceramics substrates with embedded microfluidic channels (diameter less than 467 μm) were prepared by optimizing fillers, and the connectivity, airtightness, and heat dissipation properties were tested and simulated separately. The results demonstrated excellent impermeability and heat dissipation properties. The study provides a viable technical solution to the issue of heat dissipation of electronic components under high-temperature working conditions.

针对功率器件高散热封装的安装需求，采用DLP 3D打印技术作为集成嵌入式微流控SiCN陶瓷基板的准备措施。通过优化杂化填料中Si3N4晶须的掺量，制备了具有最小收缩率（25.6 ± 0.2 %）和较高断裂韧性（4.1 ± 0.1 MPa·m1/2）的SiCN复合陶瓷。α-Si3N4/Si3N4w/SiCN陶瓷的临界热冲击温差达到730℃，比不含Si3N4晶须的α-Si3N4/SiCN陶瓷（621℃）高119℃。通过优化填料制备了直径小于467 μm嵌入微流控通道的陶瓷基板，并分别对其连通性、气密性和散热性能进行了测试和模拟。结果表明，该材料具有良好的抗渗和散热性能。该研究为电子元器件在高温工况下的散热问题提供了可行的技术解决方案。

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引用次数: 0