Article
Materials Science, Ceramics
S. Mazerat, R. Pailler
Summary: The oxidation behavior of Tyranno (R) Grade-S SiC-tows was studied at different temperatures, revealing a linear oxidation rate below 650 degrees Celsius and a parabolic oxidation rate above 650 degrees Celsius. These results provide important insights into the slow crack growth transition at 650 degrees Celsius.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Karina Warmuz, Krzysztof Ziewiec, Dominika Madej
Summary: Thermomechanical properties are crucial for refractories as they indicate the bonding strength and deformation at high temperature. This study investigates the impact of Mg-Al spinel content, stoichiometry, and synthesis method on structural, microstructural, thermomechanical, and other properties of NCCs and ULCCs. The results reveal that the thermomechanical performance of ULCCs is influenced by the contents of CA6, Al2O3, and pre-formed/in situ Al-excess Mg-Al spinel, while NCCs exhibit the best performance but decrease with increasing Al-rich spinel content. Thermodynamic simulation using FactSage 8.2 consistently shows the effect of the liquid phase on castables' thermomechanical properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yuxuan Liao, Yifei Dai, Yifan Zhai, Aoping He, Huan He, Tianquan Liang
Summary: The effect of Sc2O3 content on the corrosion behaviors of ScYSZ ceramic in CMAS was investigated. It was found that doping with more Sc2O3 improved the resistance of the ceramic. The penetration depth of CMAS decreased with increasing Sc2O3 content. The high thermochemical stability and weak reactivity of ScYSZ to CMAS contributed to its high temperature corrosion resistance.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hongkang Ou, Kaifei Fan, Lingxiang Guo, Yuyu Zhang, Yuqi Wang, Jia Sun, Qiangang Fu
Summary: In this study, Al2O3-modified Yb2SiO5 was prepared and its water vapor corrosion behavior at 1500 degrees C was investigated. The presence of residual phase Yb2O3 in the coating was observed, which reacted with Al2O3 to form toughened Yb3Al5O12 and prevented the generation of porous region. The growth stress and thermal stress were identified as the sources of delamination, limiting the service life of EBCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaozhi Wang, Hongchen Sun, Mengjiao Wang, Mingyang Tang, Yu Lan, Ran Xu, Yujun Feng, Zhenrong Li, Xiaoyong Wei, Zhuo Xu
Summary: Low temperature sintering of PLZST ceramics was achieved through the use of BASK glass additive and Y3+ co-doping under reducing atmosphere, resulting in improved energy storage and discharge performance.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingjian Ding, Binbin Huang, Xiaoyang Chen, Yun Liu, Jie Zhang, Chenyu Xu, Ping Yu
Summary: The (1-x)CaZrO3-xSrTiO3 solid-solution thin films with different compositions were prepared. The crystal structure of the films transitioned from orthorhombic to pseudo cubic and then to cubic as the composition changed. Among the prepared films, the x = 0.3 thin films showed the smallest expansion ratio of lattice volume with temperatures and the highest temperature stability of dielectric response and leakage current density at high voltage. The relationship between the tolerance factor and the temperature stability was analyzed, and it was found that high temperature stability of perovskite-type paraelectric thin films could be achieved through phase boundary design.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Pengfei Liu, Zhao Han, Xinbo He
Summary: In this study, diamond/SiC composites were prepared using the silicon vapor infiltration process. The effect of diamond content on the permittivity of the composites was investigated, and the polarization mechanism was discussed. The results showed that the permittivity of the composite was higher than that of the individual components, and it varied with the diamond content. At different frequency stages, the dielectric loss of the composite was mainly caused by conductivity and polarization.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kun Yang, Keith Bryce, Tiankai Yao, Dong Zhao, Jie Lian
Summary: Chemical durability of compositionally-complex rare-earth titanate pyrochlore solid solutions with or without uranium incorporation was investigated. Elemental release was found to be strongly correlated with chemical disorder, with a negligible correlation with entropy. Controlling composition complexity and chemical disorder can enhance waste form performance with improved chemical durability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bowen Chen, Bin Wang, Zhengyang Jing, Pan Gao, Hao Wang, Bingtian Tu, Weimin Wang, Zhengyi Fu
Summary: The researchers successfully fabricated transparent ceramics with functionalized grain boundaries and investigated their fluorescent properties. Under 980 nm laser excitation, the sample emitted temperature and excitation power-independent single-band red upconverted fluorescence. The study also revealed that the upconverted fluorescence chromaticity can be modified by the excitation wavelength.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
M. Imariouane, M. Saadaoui, S. Cardinal, H. Reveron, J. Chevalier
Summary: The aging behavior of a 1.5Y-TZP with 0.25 wt% of alumina was investigated, with results showing high resistance to aging in water vapor and the influence of cooling rate on phase transformation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qifan Li, Yahui Liang, Chuanjian Wu, Chen Zhang, Ziyu Li, Xiaona Jiang, Ke Sun, Zhongwen Lan, Xin Wang, Zhong Yu
Summary: In this study, a unique hexaferrite material, Cu 18H hexaferrite, with narrow linewidths and strong internal bias fields, is reported as a low-loss microwave ferrite for self-biased circulators.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xindi Qi, Lvping Fu, Yongshun Zou, Huazhi Gu, Ao Huang, Ding Chen, Shuang Yang
Summary: The corrosion behavior of lightweight refractories by different slags was studied. The lightweight microporous alumina-rich spinel aggregate showed excellent corrosion resistance, forming an isolation layer at the contact interface with the slag.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
I. Romero-Garcia, M. E. Sotomayor, B. Levenfeld, A. Varez, A. Varzi, G. T. Kim, S. Passerini
Summary: In this study, ultra-thick binder-free ceramic electrodes were processed using powder injection moulding (PIM) technique. The resulting electrodes showed high energy density and safety. The specific synthesis process allowed for high porosity electrodes, which exhibited very high capacities in half-cell experiments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kazuya Shimoda, Christian Colin
Summary: The in situ thermal stability of SiC-based ceramic fibers was investigated, and the third-generation fibers showed excellent stability at temperatures up to 1800 degrees C.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Dong Wang, Yunpeng He, Guoxiang Zhou, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: The chemical reactions and structural changes during the transformation of the precursor into PDCs-SiBCN ceramic were investigated in this study. The crystallization behaviors of PDCs-SiBCN and MA-SiBCN ceramics at different temperatures were compared. It was found that the different amorphous structures in PDCs-SiBCN and MA-SiBCN ceramics resulted in different bonding of silicon atoms, leading to different resistance to crystallization.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Till Koenig, Bastien Burek, Mathias Christian Galetz
Summary: In this study, oriented aluminum nitride coatings with two different crystal orientations were produced on SiC-based substrates and their oxidation resistance in wet synthetic air was investigated. It was found that (0001)-oriented coatings showed better oxidation resistance and formed a protective oxide scale.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Delphine Gourdonnaud, Vincent Pateloup, Anna Junger, Julie Bourret, Thierry Chartier, Pierre -Marie Geffroy
Summary: This study focused on the application of Robocasting in the production of dense ceramic parts, using different filament deposition paths with an environmentally friendly paste. The relationship between the printing parameters and the microstructural and mechanical properties of the sintered parts was established using the Taguchi method. The experimental results showed that the location of closed pores between filaments determined the crack propagation mechanism, which varied depending on the infill pattern. The optimal printing strategy resulted in 93% dense alumina samples with a flexural strength of 140 MPa, a Young's modulus of 355 GPa, and a Poisson's ratio of 0.23.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Dong Zhao, Andre Broussard, Tiankai Yao, Kevin Yan, Heng Ban, Jie Lian
Summary: This paper presents an innovative approach using spark plasma sintering (SPS) combined with finite element modeling (FEM) to study the transient behavior of nuclear fuels. The temperature ramping rates of SPS can simulate the thermal profiles of loss-of-coolant-accident (LOCA) and reactivity-induced-accident (RIA) events. Experimental results show that micron-sized fresh UO2 pellets synthesized by SPS exhibit good thermal shock stability and anti-cracking performance under LOCA thermal testing, while cracking occurs under simulated RIA conditions due to the stress induced by large thermal gradients. The unique capability of SPS with controlled temperature ramping enables a cost-effective method for rapid screening and evaluation of nuclear fuels under power transients.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
J. M. Tainio, T. Anttila, J. Pohjola, D. S. Brauer, J. Massera
Summary: Understanding the crystallization mechanism and sintering ability of bioactive glasses is important for their application. This study investigated the crystallization and sintering properties of B12.5 borosilicate glasses containing varying amounts of magnesium and/or strontium. The results showed that the addition of magnesium and strontium facilitated sintering and densification, and the crystallization had unexpected effects on the bioactivity of the glasses.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kengo Nishio, Anh Khoa Augustin Lu
Summary: This study reveals a common structural feature associated with Laves phases in metallic glasses, which is expected to be found in a wide range of amorphous materials.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
