Journal of the American Ceramic Society最新文献_第8页

Crystallization behavior and electrical properties of Bi2WO6/CoFe2O4 magnetoelectric composite with coherent interfaces 具有相干界面的Bi2WO6/CoFe2O4磁电复合材料的结晶行为和电学性能

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-08-01 DOI: 10.1111/jace.70150

Shaojie Sun, Huijiadai Luo, Fangzhe Li, Lu Cao, Jingxin Tian, Xiaohui Tang, Hua Ke, Yu Zhou

引用次数: 0

Sintering at extreme rates: A comparative study between blacklight and ultrafast high-temperature sintering 极端速度烧结：黑光和超快高温烧结的比较研究

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-31 DOI: 10.1111/jace.70085

Michael Scherer, Zonghao Guo, Lovro Fulanović, Richard I. Todd, Jürgen Rödel

{"title":"Sintering at extreme rates: A comparative study between blacklight and ultrafast high-temperature sintering","authors":"Michael Scherer, Zonghao Guo, Lovro Fulanović, Richard I. Todd, Jürgen Rödel","doi":"10.1111/jace.70085","DOIUrl":"https://doi.org/10.1111/jace.70085","url":null,"abstract":"Given the urgent need to address the climate and energy crisis, there is a growing emphasis on reducing energy consumption and time in ceramic sintering processes, which are pivotal in various industries. Innovative approaches, such as blacklight sintering (BLS) and ultrafast high-temperature sintering (UHS), are emerging as promising solutions due to their unprecedented heating rates and energy efficiency. This study delves into the potential applicability of BLS and UHS for the model material barium titanate (BaTiO3), as compared with conventional sintering (CS). The highest density achieved with UHS (95%) was the same as in CS but with a much shorter heating time (90 s). Due to its effective UV light absorption, BLS yielded 90% densification for BaTiO3 in only 30 s. The time- and temperature-dependent densification curves of BaTiO3 shed light on comparative performance and kinetics in BLS, UHS, and CS. The main factor limiting the sintered density achieved under all conditions was pore/boundary separation and thus the relative rates of grain boundary and pore motion and densification. Furthermore, the study highlights the presence of a transient density gradient throughout the thickness of the sample during BLS. However, by the final stage, this density gradient becomes negligible.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.70085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197345","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

Facilitating Si-O bond transformation in Si-Al-C-O fibers by fast Joule heating 快速焦耳加热促进Si-Al-C-O纤维中Si-O键转变

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-31 DOI: 10.1111/jace.70153

Yanfei Wang, Qin Ouyang, Heng Wang, Gaoming Mo, Qiang Wei, Qing Huang

{"title":"Facilitating Si-O bond transformation in Si-Al-C-O fibers by fast Joule heating","authors":"Yanfei Wang, Qin Ouyang, Heng Wang, Gaoming Mo, Qiang Wei, Qing Huang","doi":"10.1111/jace.70153","DOIUrl":"https://doi.org/10.1111/jace.70153","url":null,"abstract":"The decomposition of the SiCxOy phase constitutes the critical pathway for the evolution of Si-Al-C-O fibers into highly crystalline silicon carbide (SiC) fibers. However, the traditional pyrolysis process is limited by the slow heating rate and fails to realize the efficient transformation of high-bond-energy Si-O bonds to Si-C bonds. In this work, a fast Joule heating (JH) method was employed, and the transformation of Si-O bonds to Si-C bonds and the growth process of β-SiC microcrystals of Si-Al-C-O fibers under ultrafast high-temperature treatment were investigated, contrasting with the traditional heating method. Two types of Si-Al-C-O fibers, one retaining Si-CHx-Si moieties and the other fully inorganic, exhibit distinct transformation behaviors. In the Si-Al-C-O fibers containing residual Si-CHx-Si groups, the dehydrogenation reaction and SiCxOy phase decomposition reaction were coupled under ultrafast high-temperature treatment, which effectively reduced the transformation temperature of Si-O bonds to Si-C bonds and promoted the growth of β-SiC microcrystals. The synergistic regulation strategy of fast JH and residual organic structures proposed in this study expands the paradigms for designing advanced precursor-derived ceramic materials.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197346","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

Study on Y-Mg-Si alloy additives to improve the thermal conductivity of Si3N4 by efficient deoxygenation Y-Mg-Si合金添加剂通过高效脱氧提高氮化硅导热性能的研究

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI: 10.1111/jace.70149

Jie Lv, Pengfei Liu, Zhao Han, Yuan Li, Zhenyi Huang

{"title":"Study on Y-Mg-Si alloy additives to improve the thermal conductivity of Si3N4 by efficient deoxygenation","authors":"Jie Lv, Pengfei Liu, Zhao Han, Yuan Li, Zhenyi Huang","doi":"10.1111/jace.70149","DOIUrl":"https://doi.org/10.1111/jace.70149","url":null,"abstract":"Using Y-Mg-Si alloy as a sintering additive, Si3N4 ceramics were prepared by hot-pressing sintering combined with atmospheric pressure heat treatment. The effects of alloy additive content on the densification, microstructure, thermal conductivity, and mechanical properties of hot-pressed sintered Si3N4 ceramics were studied. Si3N4 ceramics with a density greater than 96% can be prepared by hot-pressing sintering at 1750°C for 2 h with an alloy as a sintering additive. With the increase of additive content, the density increases first and then decreases, and the grain size increases gradually. By preferentially reacting with the inherent SiO2 on the surface of Si3N4, the alloy additive improves the N/O ratio of the sintered liquid phase and reduces the effect of lattice oxygen on the thermal conductivity. Finally, the thermal conductivity of 52.7 W·m−1·K−1 was achieved at the content of 6 wt% alloy additive, which was 22% higher than that of 43.2 W·m−1·K−1 of pure oxide additive; It's hardness and fracture toughness are 16.1 GPa and 9.63 MPa·m1/2, respectively. After heat treatment at 1850°C for 5 h, the thermal conductivity increased to 67.2 W·m−1·K−1. Using Y-Mg-Si alloy as a sintering additive is an effective method to prepare high strength and high thermal conductivity Si3N4 ceramics, which provides a new idea for the preparation of high thermal conductivity Si3N4 ceramics.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197186","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

On the sintering and grain growth of 1.5 mol% yttria-stabilized zirconia 1.5 mol%氧化钇稳定氧化锆的烧结和晶粒生长

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI: 10.1111/jace.70140

Yilei Huang, Hongbing Yang, Shichang Cheng, Chang-An Wang, Yanhao Dong

{"title":"On the sintering and grain growth of 1.5 mol% yttria-stabilized zirconia","authors":"Yilei Huang, Hongbing Yang, Shichang Cheng, Chang-An Wang, Yanhao Dong","doi":"10.1111/jace.70140","DOIUrl":"https://doi.org/10.1111/jace.70140","url":null,"abstract":"Low-yttria content tetragonal zirconia polycrystals have been proposed in 1980s with enhanced toughness over the popular 3 mol% yttria-stabilized zirconia (3YSZ). Along this direction, development of 1.5 mol% yttria-stabilized zirconia (1.5YSZ) is now possible with commercial powders from Tosoh, as reported by a few groups in Japan and Europe. Here, we seek to provide an independent evaluation on the sinterability and grain growth kinetics of Tosoh 1.5YSZ powders. We show that the green bodies formed by cold isostatic press can be readily sintered to full density at 1350°C for 2 h and with minimal monoclinic phase upon cooling. Too high sintering temperature, for example, 1500°C, leads to spontaneous formation of monoclinic phase upon cooling as detected by X-ray diffraction. Two-step sintering also works, producing 99.4% relative density and 253 nm average grain size first at 1225°C for 1 min and then at 1150°C for 20 h. The grain size is ∼40% smaller than that sintered by one step at 1350°C for 2 h. Isothermal grain growth experiments were conducted within the narrow kinetic window between 1200°C and 1300°C, high enough to enable substantial grow and low enough to suppress spontaneous monoclinic phase formation. The calculated grain boundary mobility from parabolic grain growth law is only 10 times higher than that of 3YSZ. The implications shall be discussed.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197252","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

Enhanced hydrothermal corrosion resistance in SiC/SiC joints with CaO-modified Y-Al-Si-O interlayer under PWR condition 采用cao修饰的Y-Al-Si-O中间层增强SiC/SiC接头在压水堆条件下的抗水热腐蚀性能

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI: 10.1111/jace.70119

Shaobo Yang, Xian Liu, Chenxi Liang, Jiali Li, Yujie Ma, Sijie Kou, Juanli Deng, Bo Chen, Shangwu Fan

{"title":"Enhanced hydrothermal corrosion resistance in SiC/SiC joints with CaO-modified Y-Al-Si-O interlayer under PWR condition","authors":"Shaobo Yang, Xian Liu, Chenxi Liang, Jiali Li, Yujie Ma, Sijie Kou, Juanli Deng, Bo Chen, Shangwu Fan","doi":"10.1111/jace.70119","DOIUrl":"https://doi.org/10.1111/jace.70119","url":null,"abstract":"The study investigated the hydrothermal corrosion behavior of Y2O3-Al2O3-SiO2 (YAS) and CaO-Y2O3-Al2O3-SiO2 (CYAS) glass interlayers in SiC/SiC composite joints under simulated pressurized water reactor (PWR) conditions and evaluated their effects on mechanical performance. The corrosion rate of the YAS joint was ∼2.7 mg/(cm2·day), primarily due to the rapid dissolution of SiO2, which triggered pitting corrosion and void formation. While the Y2Si2O7 exhibited good stability, degradation of the glass network caused the hydrolysis of Al species, forming stable AlO(OH) corrosion products. These processes severely damaged the structural integrity, reducing shear strength to ∼6 ± 2 MPa after 15 days, making it unsuitable for application. In contrast, the CYAS joint showed superior corrosion resistance, with a corrosion rate of ∼0.16 mg/(cm2·day), only 2.2% of the YAS joint. The CYAS joint maintained structural integrity and interface bonding. During corrosion, Y2Si2O7 crystals formed, while a layer of corrosion intermediates covered and eventually transformed into AlO(OH) particles. After 25 days, shear strength remained at 26 ± 2 MPa, still satisfying service requirements. The hydrothermal corrosion mechanism of YAS-based glasses basically involved the breakdown of the glass network and formation of stable products, including Y2Si2O7 and AlO(OH).","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197253","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

Near-infrared luminescent Nd3+-doped zirconate transparent ceramics for efficient photothermal feedback window 近红外发光掺Nd3+锆酸盐透明陶瓷的高效光热反馈窗口

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI: 10.1111/jace.70151

Kailei Lu, Yuhong Xie, Wenhan Han, Mengqiu Guan, Zijie Li, Guixin Wang, Yucheng Ye, Jianqi Qi, Tiecheng Lu

{"title":"Near-infrared luminescent Nd3+-doped zirconate transparent ceramics for efficient photothermal feedback window","authors":"Kailei Lu, Yuhong Xie, Wenhan Han, Mengqiu Guan, Zijie Li, Guixin Wang, Yucheng Ye, Jianqi Qi, Tiecheng Lu","doi":"10.1111/jace.70151","DOIUrl":"https://doi.org/10.1111/jace.70151","url":null,"abstract":"Deploying a robust temperature feedback window is crucial for understanding thermally induced reactions in nuclear environments. However, existing photothermal windows suitable for radiation conditions largely function in the visible light range, which compromises the repeatability and uncertainty of temperature sensing. To address this, an efficient photothermal feedback window using near-infrared luminescent Nd3+ doped Y2Zr2O7 (YZO) highly transparent ceramics is developed. Studies on the effects of Nd3+ doping on the luminescence and lifetime of YZO:Nd ceramics revealed that the high-concentration luminescence quenching mechanism is re-absorption and dipole-quadrupole interaction. The developed YZO:Nd ceramic photothermal window exhibits acceptable sensitivity (0.108% K−1), high repeatability (>99.2%), and low temperature uncertainty (δTmin = 0.92 K). The paradigm demonstrated here provides a reference for creating high-performance photothermal windows for use in extreme radiation environments.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197182","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

First-principles investigation of the anomalous carbon diffusion in TiC0.67 TiC0.67中碳异常扩散的第一性原理研究

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI: 10.1111/jace.70136

J. Carter Stotts, Xiaochuan Tang, Gregory B. Thompson, Christopher R. Weinberger

引用次数: 0

Doping of titanium oxide during annealing in ammonia plasma 氨等离子体退火过程中氧化钛的掺杂

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI: 10.1111/jace.70142

Sergey V. Bulyarskiy, Georgy G. Gusarov, Daria A. Koiva

引用次数: 0

A novel high-performance Bi-based glass-Al2O3 composite system for LTCC applications 一种用于LTCC应用的新型高性能铋基玻璃- al2o3复合体系

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2025-07-30 DOI: 10.1111/jace.70157

Lin Gan, Yujie Huang, Juan Jiang, Jinzhao Wang, Tianjin Zhang

{"title":"A novel high-performance Bi-based glass-Al2O3 composite system for LTCC applications","authors":"Lin Gan, Yujie Huang, Juan Jiang, Jinzhao Wang, Tianjin Zhang","doi":"10.1111/jace.70157","DOIUrl":"https://doi.org/10.1111/jace.70157","url":null,"abstract":"A novel high-performance Bi-based glass-Al2O3 composite material was successfully developed for low-temperature co-fired ceramic (LTCC) applications. The compositional effects of the binary glass of Bi2O3-ZnO-B2O3-Al2O3 (BZBA)+CaO-B2O3-SiO2 (CBS) on the phases, microstructures, microwave dielectric properties, and densification mechanism of the 45 wt% glass-55 wt% Al2O3 composite specimens were systematically studied. The optimal glass composition that could yield a high relative density (98.2%) and superior dielectric properties (εr = 8.7 and tanδ = 1.2 × 10−3) was confirmed to be 32.5 wt% BZBA+12.5 wt% CBS. Furthermore, based on the optimized composition, a complete fabrication process of the glass-Al2O3 composites by tape casting was performed, the sample was found to simultaneously have a low dielectric loss (1.0 × 10−3), a high mechanical strength level (300 MPa), a high thermal conductivity (4.25 W/m·K), and outstanding chemical compatibility with Ag electrode. The results indicate that the sample of 32.5 wt% BZBA+12.5 wt% CBS-55 wt% Al2O3 is a promising candidate material for LTCC applications.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197185","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