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

Abradable ytterbium disilicate environmental barrier coatings: A study of steam, CMAS and combined steam-CMAS corrosion 耐磨性二硅酸镱环境屏障涂层：蒸汽、CMAS及蒸汽-CMAS复合腐蚀的研究

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-18 DOI: 10.1016/j.jeurceramsoc.2025.117544

A. Lynam , B. Zhang , A. Rincon Romero , E.B. Owusu , F. Xu , G.J. Brewster , G. Pattinson , T. Hussain

{"title":"Abradable ytterbium disilicate environmental barrier coatings: A study of steam, CMAS and combined steam-CMAS corrosion","authors":"A. Lynam , B. Zhang , A. Rincon Romero , E.B. Owusu , F. Xu , G.J. Brewster , G. Pattinson , T. Hussain","doi":"10.1016/j.jeurceramsoc.2025.117544","DOIUrl":"10.1016/j.jeurceramsoc.2025.117544","url":null,"abstract":"<div><div>Abradable environmental barrier coatings (EBCs) are essential for improving gas turbine efficiency with ceramic matrix composites (CMCs). This study examined ytterbium disilicate (Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> or YbDS) abradable EBCs with 8 %, 15 %, and 22 % porosity, deposited via atmospheric plasma spraying. Coatings were exposed to steam, CMAS, and combined steam-CMAS at 1350 °C for 100 hr. Results showed that porosity had minimal impact on corrosion resistance. Steam exposure formed a thin ytterbium monosilicate (Yb<sub>2</sub>SiO<sub>5</sub> or YbMS) layer, while CMAS caused dissolution-precipitation, forming reprecipitated Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> and Yb-apatite (Ca<sub>2</sub>Yb<sub>8</sub>(SiO<sub>4</sub>)<sub>6</sub>O<sub>2</sub>). Combined exposure increased CMAS penetration depth by 25 %, enhanced Yb-apatite formation, and introduced ytterbium aluminium garnet (Yb<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>, YbAG). These findings demonstrate that the interaction of CMAS and steam accelerates coating degradation, highlighting the need for optimized phase composition and microstructure to enhance abradable EBC durability under turbine-relevant conditions.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117544"},"PeriodicalIF":5.8,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155154","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 metallization of AlN ceramics fabricated via direct hot-pressing micro-Ag particles in air 空气中微银颗粒直接热压制备AlN陶瓷的金属化研究

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-18 DOI: 10.1016/j.jeurceramsoc.2025.117542

Zhicheng Ding , Chenghao Zhang , Yang Liu , Chun Li , Xiaoqing Si , Zongjing He , Zhiquan Wang , Jian Cao

{"title":"The metallization of AlN ceramics fabricated via direct hot-pressing micro-Ag particles in air","authors":"Zhicheng Ding , Chenghao Zhang , Yang Liu , Chun Li , Xiaoqing Si , Zongjing He , Zhiquan Wang , Jian Cao","doi":"10.1016/j.jeurceramsoc.2025.117542","DOIUrl":"10.1016/j.jeurceramsoc.2025.117542","url":null,"abstract":"<div><div>AlN metallization substrates hold broad application potential in the field of electronic packaging due to their high thermal conductivity and unique electrical insulation properties. The present work reports a method for preparing Ag coatings by directly pressing and sintering micro-Ag particles on the AlN surface in air without additional brazing fillers or pre-treatment. The in-situ formation of the Ag-containing Al<sub>2</sub>O<sub>3</sub> interlayer (∼200 nm) is critical for the interfacial bonding at the AlN/Ag interface. The diffusion of Ag particles into Al<sub>2</sub>O<sub>3</sub> not only enhances the interfacial adhesion of the Ag layer but also improves thermal conductivity. Notably, AlN/Ag exhibits a high bonding strength of 67.6 MPa with an excellent thermal conductivity of 178.7 W·m<sup>−1</sup>·K<sup>−1</sup> at 950°C. The Ag layer demonstrates superior surface hardness and electrical conductivity at 900°C due to its high density and low grain boundary density.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117542"},"PeriodicalIF":5.8,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124862","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

Abrasion resistance and hardness of Cr-free zinc and iron co-doped spinel and magnesia-spinel refractory matrices for copper smelting 铜冶炼用无铬锌铁共掺尖晶石和镁尖晶石耐火材料基体的耐磨性和硬度

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-18 DOI: 10.1016/j.jeurceramsoc.2025.117545

Ilona Jastrzębska , Joanna Przystaś , Oliwia Pająk , Alan Wilmański , Somnath Mandal

{"title":"Abrasion resistance and hardness of Cr-free zinc and iron co-doped spinel and magnesia-spinel refractory matrices for copper smelting","authors":"Ilona Jastrzębska , Joanna Przystaś , Oliwia Pająk , Alan Wilmański , Somnath Mandal","doi":"10.1016/j.jeurceramsoc.2025.117545","DOIUrl":"10.1016/j.jeurceramsoc.2025.117545","url":null,"abstract":"<div><div>Abrasion resistance is one of the least studied properties of refractories despite its significant contribution to wear mechanisms. This work investigated the abrasion resistance and Vickers hardness of ZnO+Fe<sub>2</sub>O<sub>3</sub> (3:1 by weight) doped alumina-rich spinel and magnesia-spinel that contained multicomponent (Mg,Zn)[Al,Fe]<sub>2</sub>O<sub>4</sub> spinel as a major and minor phase, respectively. Sintered Al<sub>2</sub>O<sub>3</sub>, MgO-stabilized ZrO<sub>2</sub> and MgO were used as standard reference refractory raw material aggregates for comparison. Stationary samples at room temperature were rubbed against a vertically rotating rubber lined wheel on which SiC particles were fed. This abrasion test revealed that (Mg,Zn)[Al,Fe]<sub>2</sub>O<sub>4</sub> spinel occurring as individual grains along with sub-micron precipitates within magnesia grains increase abrasion resistance as compared to MgO. Microstructure of abraded surfaces identified wear mechanisms like microcracking, grain pullout formed craters, abrasion grooves and scraped patches. 3 wt% doped magnesia-spinel and 34 wt% doped alumina-rich spinel were found to be promising wear resistant matrix compositions to make environment-friendly chromium-free refractories for the copper industry.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117545"},"PeriodicalIF":5.8,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139148","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

Tin-rich nano-fluorite evolution in bixbyite indium tin oxide ceramics bixbyite氧化铟锡陶瓷中富锡纳米萤石的演化

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-16 DOI: 10.1016/j.jeurceramsoc.2025.117538

Seong-Uk Oh , Dokyum Kim , Young Ki Kim , Ji Hoon Lee , Tae Hoon Lee , Young-Woo Heo , Jeong-Joo Kim , Joon-Hyung Lee

{"title":"Tin-rich nano-fluorite evolution in bixbyite indium tin oxide ceramics","authors":"Seong-Uk Oh , Dokyum Kim , Young Ki Kim , Ji Hoon Lee , Tae Hoon Lee , Young-Woo Heo , Jeong-Joo Kim , Joon-Hyung Lee","doi":"10.1016/j.jeurceramsoc.2025.117538","DOIUrl":"10.1016/j.jeurceramsoc.2025.117538","url":null,"abstract":"<div><div>This study presents an unprecedented experimental observation of fluorite-structured nano-precipitates (NPs) within bulk ITO grains. These NPs, containing higher Sn concentrations than the ITO matrix, form coherent interfaces with the bixbyite (ITO matrix) structure, representing nanoscale compositional heterogeneities that have remained undetected. The NPs form through charge compensation, as local Sn enrichment drives oxygen interstitials to fill intrinsic oxygen vacancies of the bixbyite structure, and their features can be tuned via reduction treatment or heat treatment temperature. EXAFS analysis of samples with high NP density revealed elevated coordination numbers for Sn ions, supporting the presence of oxygen interstitials. Formation of NPs occurs during post-sintering cooling when Sn ions, initially dissolved at high temperatures, are expelled due to decreased solubility. While 2<span><math><mrow><mrow><msubsup><mrow><mi>Sn</mi></mrow><mrow><mi>In</mi></mrow><mrow><mi>•</mi></mrow></msubsup><msubsup><mrow><mi>O</mi></mrow><mrow><mi>i</mi></mrow><mrow><mo>″</mo></mrow></msubsup></mrow><mo>⁢</mo></mrow></math></span> defect clusters in ITO have been previously discussed only through theoretical predictions, this study provides the experimental observation of such clusters in the form of NPs.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117538"},"PeriodicalIF":5.8,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155153","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

Measurement of cationic diffusivity through Er2O3/Y2O3 interdiffusion under AC-flash event 交流闪蒸条件下Er2O3/Y2O3互扩散法测定阳离子扩散率

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-15 DOI: 10.1016/j.jeurceramsoc.2025.117540

Ying Yang , Hiroshi Masuda , Fei Shen Ong , Hidehiro Yoshida

引用次数: 0

Understanding the effect of rare-earth doping in ABO3 ferroelectrics on capacitive energy storage 了解ABO3铁电体中稀土掺杂对电容储能的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-15 DOI: 10.1016/j.jeurceramsoc.2025.117539

Yu-Lin Duan , Jian Wang , Zhong-Hui Shen , Meng-Jun Zhou , Jian-Yong Jiang , Han-Xing Liu , Ce-Wen Nan

{"title":"Understanding the effect of rare-earth doping in ABO3 ferroelectrics on capacitive energy storage","authors":"Yu-Lin Duan , Jian Wang , Zhong-Hui Shen , Meng-Jun Zhou , Jian-Yong Jiang , Han-Xing Liu , Ce-Wen Nan","doi":"10.1016/j.jeurceramsoc.2025.117539","DOIUrl":"10.1016/j.jeurceramsoc.2025.117539","url":null,"abstract":"<div><div>Rare-earth doping, even in trace amounts, can significantly regulate the energy storage performance of ferroelectric materials by synergistically adjusting microscopic behaviors such as crystal structure and energy bands. However, understanding the mechanisms by which different rare-earth elements influence the energy storage performance such as polarization and breakdown remains a major challenge. To address this, we use density functional theory to systematically investigate the effect of rare-earth doping on the microscopic ferroelectric behavior in three ABO<sub>3</sub> perovskite ferroelectrics by substituting <em>A</em>-site or <em>B</em>-site ions with 15 types of rare-earth ions. The results show that when introducing rare-earth ions, lattice structure and electronic state distribution can be rebuilt due to strong volume effect and hybridization, thereby altering the ion displacement polarization, reversal energy barrier, and energy gap. Notably, their effects highly depend on the occupancy of rare-earth ions on the <em>A</em>-site or <em>B</em>-site. For <em>A</em>-site doping, a decrease in the ionic radius of rare-earth ions generally leads to increases in the <em>c</em>/<em>a</em> ratio, polarization strength, reversal energy barrier, and energy gap, whereas <em>B</em>-site doping shows the opposite trends. This work reveals the underlying mechanisms of rare-earth doping on affecting the energy storage performance and provides important theoretical guidance for engineering rare-earth doping in perovskite ferroelectrics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117539"},"PeriodicalIF":5.8,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070589","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 use of niobium carbide as grain growth inhibitor in WC-10Co cemented carbides 碳化铌作为晶粒生长抑制剂在WC-10Co硬质合金中的应用

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-14 DOI: 10.1016/j.jeurceramsoc.2025.117533

Alexandre Mégret, Véronique Vitry, Fabienne Delaunois

{"title":"The use of niobium carbide as grain growth inhibitor in WC-10Co cemented carbides","authors":"Alexandre Mégret, Véronique Vitry, Fabienne Delaunois","doi":"10.1016/j.jeurceramsoc.2025.117533","DOIUrl":"10.1016/j.jeurceramsoc.2025.117533","url":null,"abstract":"<div><div>A key parameter in the processing of tungsten carbide materials is the control of the grain growth during the sintering stage. To limit the grain coarsening, grain growth inhibitors are added during the mixing of the powders. Those are transition metal carbides (vanadium, chromium, niobium, molybdenum) that are added in small amounts. Niobium carbide is an efficient GGI and can bring enhanced fracture toughness and reasonable hardness. The influence of niobium carbide (alone or with a combination of other inhibitors) on the grain growth was studied. To ensure a good homogeneity, a two-step ball milling was carried out: the first with cobalt and inhibitors, the second with WC and the doped-cobalt powder. The powders were sintered by vacuum sintering before the characterization of mechanical properties such as hardness and toughness. Niobium carbide is found to be an effective inhibitor since the mechanical properties are superior compared to the other inhibitors. Hardness and fracture toughness are 1858 ± 31 HV<sub>30</sub> and 9.8 ± 0.2 MPa√m for NbC alone and 1930 ± 22 HV<sub>30</sub> and 9.4 ± 0.3 MPa√m for the mixture NbC+Cr<sub>3</sub>C<sub>2</sub> respectively.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117533"},"PeriodicalIF":5.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068856","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

Fabrication, spectroscopy, and laser operation of Nd:LuScO3 transparent ceramics Nd:LuScO3透明陶瓷的制备、光谱学和激光操作

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-14 DOI: 10.1016/j.jeurceramsoc.2025.117537

Fangliang Shen , Bingheng Sun , Conghui Huang , Yin Hang , Benxue Jiang , Jintai Fan , Long Zhang

引用次数: 0

High-power piezoelectric ceramics with superior figure-of-merits through tailored grain engineering 高功率压电陶瓷，通过量身定制的颗粒工程，具有优越的性能

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-14 DOI: 10.1016/j.jeurceramsoc.2025.117536

Dong-Gyu Lee , Yi Yeon Kim , Hyun Soo Kim , Minwoo Kim , Tae Kyoung Yoon , Xukun Su , Iman M. Imani , Il-Ryeol Yoo , Sunghoon Hur , Heemin Kang , Sahn Nahm , Yongke Yan , Chong-Yun Kang , Jeong Min Baik , Kyung-Hoon Cho , Hyun-Cheol Song

{"title":"High-power piezoelectric ceramics with superior figure-of-merits through tailored grain engineering","authors":"Dong-Gyu Lee , Yi Yeon Kim , Hyun Soo Kim , Minwoo Kim , Tae Kyoung Yoon , Xukun Su , Iman M. Imani , Il-Ryeol Yoo , Sunghoon Hur , Heemin Kang , Sahn Nahm , Yongke Yan , Chong-Yun Kang , Jeong Min Baik , Kyung-Hoon Cho , Hyun-Cheol Song","doi":"10.1016/j.jeurceramsoc.2025.117536","DOIUrl":"10.1016/j.jeurceramsoc.2025.117536","url":null,"abstract":"<div><div>This study highlights the optimization of Mn-doped (1-x)Pb(Mg<sub>2/3</sub>Nb<sub>1/3</sub>O<sub>3</sub>-xPbTiO<sub>3</sub> (PMN-PT) ceramics for high-power piezoelectric applications through a combination of (001) grain texturing with BaTiO<sub>3</sub> seed and oxygen atmosphere sintering. The synergistic effects of Mn-induced domain-pinning and grain alignment significantly improved both the soft and hard piezoelectric properties. Optimized ceramics achieved a piezoelectric coefficient (<em>d</em><sub><em>33</em></sub>) of 455 pC/N and a mechanical quality factor (<em>Q</em><sub><em>m</em></sub>) of 1466, demonstrating high-performance potential. Oxygen sintering reduced porosity, further boosting mechanical stability and piezoelectric response. High-power performance tests confirmed these advancements, achieving a maximum vibration velocity of 0.45 m/s. This study underscores the potential of combining texturing and defect control to develop high-performance piezoelectric materials tailored for advanced applications in high-frequency and high-power devices.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117536"},"PeriodicalIF":5.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116777","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 oxidation resistance and plasma ablation performance at 3000 K of HfC-TiC ultra-high temperature ceramics HfC-TiC超高温陶瓷在3000 K下的抗氧化性能和等离子烧蚀性能

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-13 DOI: 10.1016/j.jeurceramsoc.2025.117530

Wenjing Luo , Hongting Tang , Rong Li , Bangbang Liu , Baojiong Hu , Qiang Zhen

{"title":"The oxidation resistance and plasma ablation performance at 3000 K of HfC-TiC ultra-high temperature ceramics","authors":"Wenjing Luo , Hongting Tang , Rong Li , Bangbang Liu , Baojiong Hu , Qiang Zhen","doi":"10.1016/j.jeurceramsoc.2025.117530","DOIUrl":"10.1016/j.jeurceramsoc.2025.117530","url":null,"abstract":"<div><div>Ultra-high-temperature ceramics (UHTCs), owing to their exceptional performance under extreme heat and harsh conditions, have become the preferred choice for critical thermal protection materials in high-speed aerospace vehicles. Here, the HfC-TiC ceramics were fabricated through pressureless sintering, and its oxidation behaivor was investigated using non-isothermal method. The oxidation activation energy of HfC-TiC sample reaches 385.39 kJ/mol. Then the ablation behavior of HfC-TiC ceramics was tested under plasma ablation conditions (3000 K, 5.0 MW/m<sup>2</sup>). The mass ablation rate and linear ablation rate of HfC-TiC can reach −1.11 × 10<sup>−3</sup> g·s<sup>−1</sup> and −1.40 × 10<sup>−3</sup> mm·s<sup>−1</sup> after being ablated for 300 seconds, respectively. The oxide layers in the center consisted of a porous oxide upper layer, a dense Ti-enriched intermediate layer, and an oxide inner layer. This complex multi-layered oxidative configuration synergistically protected the underlying carbide matrix, significantly enhancing the ablation resistance of HfC-TiC ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117530"},"PeriodicalIF":5.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107261","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