Journal of The European Ceramic Society最新文献_第3页

Structural tuning of high entropy (LaPrEuGdYb)2Zr2O7+ δ for uranium immobilization at A-site and B-site

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-24 DOI: 10.1016/j.jeurceramsoc.2025.117390

Qiuyi Wang , Zhu Liu , Congcong Ding , Lielin Wang , Jun Liao , Tianxu Li , Liang Jiang , Tianyu Wang

{"title":"Structural tuning of high entropy (LaPrEuGdYb)2Zr2O7+ δ for uranium immobilization at A-site and B-site","authors":"Qiuyi Wang , Zhu Liu , Congcong Ding , Lielin Wang , Jun Liao , Tianxu Li , Liang Jiang , Tianyu Wang","doi":"10.1016/j.jeurceramsoc.2025.117390","DOIUrl":"10.1016/j.jeurceramsoc.2025.117390","url":null,"abstract":"<div><div>High-entropy pyrochlore can immobilize multiple radionuclides simultaneously, and thus is a highly promising binder material. In this study, we synthesized high-entropy binder materials (LaPrEuGdYb)<sub>2</sub>Zr<sub>2</sub>O<sub>7+δ</sub> to solidify uranium, and compared the structure variation of solidification forms for uranium at A-site ((LaPrEuGdYb)<sub><em>y</em></sub>U<sub><em>x</em></sub>)<sub>2</sub>Zr<sub>2</sub>O<sub>7+δ</sub>) and B-site (LaPrEuGdYb)<sub>0.4</sub>(Zr<sub><em>x</em></sub>U<sub>1-<em>x</em></sub>)<sub>2</sub>O<sub>7+δ</sub>). The uranium solidification forms were manufactured via high-temperature vacuum sintering with sol-gel spray pyrolysis pretreatment. Uranium solubility limit (<em>x</em> = 0.25) at B-site was higher than that at A-site (<em>x</em> = 0.20), as demonstrated by X-ray diffraction and Raman spectroscopy. However, the chemical stability of uranium solidification form at A-site was better than that at B-site after a 42 d static leaching experiment. Restrained by the uranyl radius and valence, uranium was easy to occupy the B-site of (LaPrEuGdYb)<sub>2</sub>Zr<sub>2</sub>O<sub>7+δ</sub> via the regulation of oxygen vacancies. Accordingly, more oxygen vacancies were found for B-site occupation. The structural adjustment capability of (LaPrEuGdYb)<sub>2</sub>Zr<sub>2</sub>O<sub>7+δ</sub> were performed by the oxygen vacancies which would further affect the cation valence and radius, and hence solubility limit. For example, the ratio of U<sup>6 +</sup> to U<sup>4+</sup> increased with higher uranium content for A-site doped solidification form, while this ratio had no significant change for B-site doped solidification form.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117390"},"PeriodicalIF":5.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

High-pressure sintered polycrystals from Ti-coated cBN powders: Microstructure, mechanical properties and thermo-electrical characteristics

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-24 DOI: 10.1016/j.jeurceramsoc.2025.117393

Agnieszka Gubernat , Piotr Klimczyk , Paweł Pasierb , Paweł Rutkowski , Kamil Kornaus , Radosław Lach , Justyna Kulczyk-Malecka , Jerzy Morgiel

{"title":"High-pressure sintered polycrystals from Ti-coated cBN powders: Microstructure, mechanical properties and thermo-electrical characteristics","authors":"Agnieszka Gubernat , Piotr Klimczyk , Paweł Pasierb , Paweł Rutkowski , Kamil Kornaus , Radosław Lach , Justyna Kulczyk-Malecka , Jerzy Morgiel","doi":"10.1016/j.jeurceramsoc.2025.117393","DOIUrl":"10.1016/j.jeurceramsoc.2025.117393","url":null,"abstract":"<div><div>Three grades of Ti-coated cubic boron nitride (cBN) powders, varying in grain size and coating thickness, were used to create high-pressure, high-temperature (HPHT) sintered polycrystalline materials (PcBN) without addition of bonding phases. The resulting pore-free composites exhibited a Young's modulus of 620–850 GPa and Knoop hardness between 22 and 29 GPa. The composites consist of cBN grains uniformly surrounded by titanium compounds, mainly TiN and TiB<sub>2</sub>, initially formed during the coating process and then crystalized during HPHT sintering, due to due to the high reactivity of titanium with cBN. Impedance spectroscopy and laser flash analysis indicated that microstructure of composites significantly influences their electrical and thermal conductivities, with notable temperature-dependent changes. These composites can be considered promising for advanced cutting tools, particularly in developing smart tools that can self-diagnose wear based on electrical property changes during cutting.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117393"},"PeriodicalIF":5.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Preparation, heavy-metal solidification mechanism and applications of glass-ceramics derived from solid wastes: A review

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-24 DOI: 10.1016/j.jeurceramsoc.2025.117392

Yongtao Li , Geying Liu , Weina Li , Han Xia , Ali Feire Yasen , Haina Qi , Xuejian Zhang , Dexin Huang , Huisheng Liu , M. Priya , C.K. Mahadevan

{"title":"Preparation, heavy-metal solidification mechanism and applications of glass-ceramics derived from solid wastes: A review","authors":"Yongtao Li , Geying Liu , Weina Li , Han Xia , Ali Feire Yasen , Haina Qi , Xuejian Zhang , Dexin Huang , Huisheng Liu , M. Priya , C.K. Mahadevan","doi":"10.1016/j.jeurceramsoc.2025.117392","DOIUrl":"10.1016/j.jeurceramsoc.2025.117392","url":null,"abstract":"<div><div>The large amount of heavy metals contained in solid waste poses a challenge to its harmless recycling. In order to solve the environmental problems caused by heavy metals in solid waste and achieve the resource utilization of solid waste, high-temperature reconstruction can be used to prepare glass-ceramics from solid waste. Glass-ceramics have been used in various high value-added fields due to the high mechanical strength, high acid and alkali resistance, etc. In this paper, the preparation methods, the effects of chemical composition, heat treatment, crystalline core agents on the structure and properties of glass-ceramics are systematically reviewed. Solidification and volatilization are two processes related to heavy metal migration during the preparation of glass-ceramics, and the mechanisms of solidification and volatilization are analyzed. Both traditional and innovative applications are introduced in this review. Moreover, a discussion is conducted on the prospects and challenges of different preparation processes and applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 12","pages":"Article 117392"},"PeriodicalIF":5.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synergistic strengthening and toughening of alumina ceramic using two-dimensional MXene and graphene

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-23 DOI: 10.1016/j.jeurceramsoc.2025.117391

Xinxin Qi , Chuanjin Huang , Yehong Cheng , Xiaoyang Bi , Qiang Wei , Libin Zhao , Ning Hu

{"title":"Synergistic strengthening and toughening of alumina ceramic using two-dimensional MXene and graphene","authors":"Xinxin Qi , Chuanjin Huang , Yehong Cheng , Xiaoyang Bi , Qiang Wei , Libin Zhao , Ning Hu","doi":"10.1016/j.jeurceramsoc.2025.117391","DOIUrl":"10.1016/j.jeurceramsoc.2025.117391","url":null,"abstract":"<div><div>The inherent brittleness of alumina ceramics often leads to unexpected catastrophic failures, which significantly limits their practical applications. However, improving toughness of alumina typically result in a compromise of its strength. Achieving both high strength and exceptional damage tolerance in alumina remains a formidable challenge. To overcome this issue, we have fabricated an alumina composite that combines high strength and toughness by integrating two-dimensional MXene and graphene through solution mixing and hot pressing methods. Specifically, the optimized composite demonstrates an approximately 20 % increase in flexural strength and a remarkable 521 % improvement in fracture toughness, highlighting its exceptional durability and resistance to sudden failure. Graphene significantly enhances fracture toughness through mechanisms such as crack deflection, microcracking, crack branching, and bridging. These mechanisms effectively extend the crack propagation path and reduce the risk of sudden failure. By contrast, MXene plays a crucial role in improving flexural strength by reducing grain size. This synergistic strengthening and toughening strategy reveals new avenues for developing high-performance ceramic composites.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117391"},"PeriodicalIF":5.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Impact of repeated heat pulses on the consolidation and grain growth of 3YSZ consolidated via ultrafast high-temperature sintering (UHS)

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-23 DOI: 10.1016/j.jeurceramsoc.2025.117395

Liying Chen , Jinling Liu , Roberto Volpe , Salvatore Grasso

引用次数: 0

Microstructure, mechanical properties and thermal expansion behavior of M55J Cf/SiC-SiBC composites with different interphase thicknesses

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-23 DOI: 10.1016/j.jeurceramsoc.2025.117389

Haohui Hao , Xiaolin Dang , Tao He , Donglin Zhao , Xinlei Wang , Chao Chen , Xiaomeng Fan

{"title":"Microstructure, mechanical properties and thermal expansion behavior of M55J Cf/SiC-SiBC composites with different interphase thicknesses","authors":"Haohui Hao , Xiaolin Dang , Tao He , Donglin Zhao , Xinlei Wang , Chao Chen , Xiaomeng Fan","doi":"10.1016/j.jeurceramsoc.2025.117389","DOIUrl":"10.1016/j.jeurceramsoc.2025.117389","url":null,"abstract":"<div><div>For space gravitational wave detectors, ultra-high-precision detection requires structural materials with excellent dimensional stability, and the development of near-zero expansion materials has emerged. In this work, M55J C<sub>f</sub>/SiC-SiBC with different PyC thicknesses were fabricated, and the mechanical and expansion properties were studied. The compatibility between near-zero expansion and high load-bearing capacity was realized by regulating the interphase thickness. The results show that, as PyC thickness increases, both the intra-bundle matrix content and the proportion of fiber corrosion area decrease. As interphase thickness increases from 180 to 420 nm, the tensile strength increases from 159 ± 12–254 ± 18 MPa and then decreases to 229 ± 3 MPa. The CTE of M55J C<sub>f</sub>/SiC-SiBC decreased from 0.09 × 10<sup>−6</sup> to −0.31 × 10<sup>−6</sup> K<sup>−1</sup>. Through interphase thickness optimization, the macroscopic expansion is transformed to micro-zone deformation and the relative deformation between fiber and matrix can be coordinated, therefore the near-zero expansion property can be realized.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117389"},"PeriodicalIF":5.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The effect of damage and temperature on electrical impedance of SiCf/SiC mini-composites and a preliminary decoupling method 损伤和温度对 SiCf/SiC 微型复合材料电阻抗的影响及初步去耦方法

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-22 DOI: 10.1016/j.jeurceramsoc.2025.117388

Beichen Xue , Guoqiang Yu , Jiaming Li , Zheng Ni , Wenbing Ma , Zhengqing Sui , Xiguang Gao , Yingdong Song

{"title":"The effect of damage and temperature on electrical impedance of SiCf/SiC mini-composites and a preliminary decoupling method","authors":"Beichen Xue , Guoqiang Yu , Jiaming Li , Zheng Ni , Wenbing Ma , Zhengqing Sui , Xiguang Gao , Yingdong Song","doi":"10.1016/j.jeurceramsoc.2025.117388","DOIUrl":"10.1016/j.jeurceramsoc.2025.117388","url":null,"abstract":"<div><div>This letter presents a preliminary method for decoupling and monitoring damage and temperature in SiC fiber-reinforced SiC matrix mini-composites using electrical impedance. The impact of damage on impedance characteristics during uniaxial tension is elucidated by decomposing the impedance data into real and imaginary components. An equivalent circuit model, which accounts for the influence of electrode effects, is developed to interpret the experimental findings. Impedance measurements were conducted on pristine and pre-damaged specimens under a temperature-controlled environment at frequencies ranging from 10 Hz to 5 MHz. The reactance is found to be strongly correlated with damage progression and remains unaffected by changes in resistivity due to thermoresistive effects. This finding facilitates the decoupling and concurrent monitoring of damage and temperature conditions in ceramic matrix composite structures using only electrical impedance.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117388"},"PeriodicalIF":5.8,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The effects of configuration-entropy and aliovalent-doping on the electrical and stability properties of bixbyite oxides

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-21 DOI: 10.1016/j.jeurceramsoc.2025.117378

Keke Hou , Man Tian , Laijun Liu , Jungu Xu

{"title":"The effects of configuration-entropy and aliovalent-doping on the electrical and stability properties of bixbyite oxides","authors":"Keke Hou , Man Tian , Laijun Liu , Jungu Xu","doi":"10.1016/j.jeurceramsoc.2025.117378","DOIUrl":"10.1016/j.jeurceramsoc.2025.117378","url":null,"abstract":"<div><div>The bixbyites Ln<sub>2</sub>O<sub>3</sub> materials which have the defect fluorite structure show limited ionic conduction and poor chemical stabilities. To find solutions to overcome these drawbacks, herein the effect of configuration entropy and aliovalent-doping (Ca-, Mg-, Ba-, and Zr-doping) for Ln on the electrical properties and stabilities of Ln<sub>2</sub>O<sub>3</sub> were thoroughly investigated. The results disclosed that Ca- Mg- or Ba-doping could considerably improve the samples’ electrical conductivities as expected, with the Ca-doping leading to dominating ionic conduction, while both Mg- and Ba-doping resulted in dominating electronic conduction. For the Zr-doping, the electrical conductivities increased with doping level, with the samples 0 ≤ <em>x</em> ≤ 0.5 dominated by electronic conduction while the samples 0.6 ≤ <em>x</em> ≤ 0.8 showing dominating ionic conduction. For stability properties, enhancing the configuration entropy would increase the chemical stabilities of the Ln<sub>2</sub>O<sub>3</sub>-based materials. Therefore, Ca- and Zr-doping are beneficial to improving both the stabilities and ionic conductivities.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117378"},"PeriodicalIF":5.8,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The effect of aluminum oxide on the mechanical properties of hot-pressing black titanium dioxide ceramics

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-21 DOI: 10.1016/j.jeurceramsoc.2025.117385

Xinwei Geng , Yongfeng Xia , Ming Zhu , Jun Zhao , Dongxu Yao , Yu-Ping Zeng

{"title":"The effect of aluminum oxide on the mechanical properties of hot-pressing black titanium dioxide ceramics","authors":"Xinwei Geng , Yongfeng Xia , Ming Zhu , Jun Zhao , Dongxu Yao , Yu-Ping Zeng","doi":"10.1016/j.jeurceramsoc.2025.117385","DOIUrl":"10.1016/j.jeurceramsoc.2025.117385","url":null,"abstract":"<div><div>Titanium dioxide (TiO<sub>2</sub>) ceramics, known for their excellent functionality, have been limited in applications due to their relatively weak mechanical properties. In this work, black TiO<sub>2</sub> ceramics with superior mechanical properties are achieved through the incorporation of aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) additives and hot-pressing method. The black TiO<sub>2</sub> ceramic exhibited a remarkable flexural strength of near 400 MPa, which is the highest value known to us to date for similar materials. The influence of Al<sub>2</sub>O<sub>3</sub> on the mechanical properties of black TiO<sub>2</sub> ceramics was discussed from the perspective of material microstructures. The Al-Ti-O nanolayer was observed at the grain boundaries, contributing to both the reinforcement of grain boundaries and the refinement of grains along with Al<sub>2</sub>O<sub>3</sub> particles. This study not only developed black TiO<sub>2</sub> ceramics with great mechanical properties but also expanded our understanding of the TiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> material system.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117385"},"PeriodicalIF":5.8,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 piezoelectric and photochromic properties of Sm3+/Sr2+ co-doped K0.52Na0.48NbO3 ceramics in combination with luminescence

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-20 DOI: 10.1016/j.jeurceramsoc.2025.117387

J.W. Seo, S.W. Wi, Y.S. Lee, Jin-Seok Chung

引用次数: 0