Journal of The European Ceramic Society最新文献_第10页

Damage-tolerant oxides by imprint of an ultra-high dislocation density 通过超高位错密度印记实现耐损伤氧化物

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-03 DOI: 10.1016/j.jeurceramsoc.2024.116969

Oliver Preuß , Enrico Bruder , Jiawen Zhang , Wenjun Lu , Jürgen Rödel , Xufei Fang

{"title":"Damage-tolerant oxides by imprint of an ultra-high dislocation density","authors":"Oliver Preuß , Enrico Bruder , Jiawen Zhang , Wenjun Lu , Jürgen Rödel , Xufei Fang","doi":"10.1016/j.jeurceramsoc.2024.116969","DOIUrl":"10.1016/j.jeurceramsoc.2024.116969","url":null,"abstract":"<div><div>Dislocations in ductile ceramics offer the potential for robust mechanical performance while unlocking versatile functional properties. Previous studies have been limited by small volumes with dislocations and/or low dislocation densities in ceramics. Here, we use Brinell ball scratching to create crack-free, large plastic zones, offering a simple and effective method for dislocation engineering at room temperature. Using MgO, we tailor high dislocation densities up to ∼10<sup>15</sup> m<sup>−2</sup>. We characterise the plastic zones by chemical etching, electron channelling contrast imaging, and scanning transmission electron microscopy, and further demonstrate that crack initiation and propagation in the plastic zones with high-density dislocations can be completely suppressed. The residual stresses in the plastic zones were analysed using high-resolution electron backscatter diffraction. With the residual stress being subsequently relieved via thermal annealing while retaining the high-density dislocations, we observe the cracks are no longer completely suppressed, but the pure toughening effect of the dislocations remains evident.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 2","pages":"Article 116969"},"PeriodicalIF":5.8,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Understanding the lower fracture resistance of cold sintered ceramics 了解冷烧结陶瓷较低的抗断裂性

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-03 DOI: 10.1016/j.jeurceramsoc.2024.116968

Abdullah Jabr , Elija Ribul , David Salamon , Raul Bermejo

引用次数: 0

Influence of water vapor partial pressure on self-healing and oxidation of SiC-dispersed yttrium silicate composites 水蒸气分压对碳化硅分散硅酸钇复合材料自愈合和氧化的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-03 DOI: 10.1016/j.jeurceramsoc.2024.116967

Huong Thi Nguyen , Yen-Ling Kuo , Makoto Nanko

{"title":"Influence of water vapor partial pressure on self-healing and oxidation of SiC-dispersed yttrium silicate composites","authors":"Huong Thi Nguyen , Yen-Ling Kuo , Makoto Nanko","doi":"10.1016/j.jeurceramsoc.2024.116967","DOIUrl":"10.1016/j.jeurceramsoc.2024.116967","url":null,"abstract":"<div><div>The self-healing and oxidation behavior of SiC-dispersed Y<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Y<sub>2</sub>SiO<sub>5</sub> composites were elucidated under various water vapor partial pressures <span><math><msub><mrow><mi>P</mi></mrow><mrow><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi>O</mi></mrow></msub></math></span>. Samples were exposed in a furnace for self-healing experiments at 1100–1300°C and for high-temperature oxidation at 1200–1400°C, both for 1–24 h, under <span><math><msub><mrow><mi>P</mi></mrow><mrow><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi>O</mi></mrow></msub></math></span> ranging from 2×10<sup>4</sup> to 5×10<sup>4</sup> Pa, while keeping <span><math><msub><mrow><mi>P</mi></mrow><mrow><msub><mrow><mi>O</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msub></math></span>constant at 2×10<sup>4</sup> Pa. Water vapor promoted the self-healing effectiveness of the composites. A mechanism contributing to the closure of surface cracks was consistent with volume expansion derived from the oxidative conversion of SiC into SiO<sub>2</sub> and the outward diffusion of yttrium cations. The formation of the internally oxidized zone signifies oxidation behavior, resulting from the inward diffusion of oxygen ions. Growth of the internally oxidized zone obeys the parabolic pattern. The influence of <span><math><msub><mrow><mi>P</mi></mrow><mrow><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi>O</mi></mrow></msub></math></span> on the high-temperature oxidation of SiC/Y<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Y<sub>2</sub>SiO<sub>5</sub> is discussed in this study.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 116967"},"PeriodicalIF":5.8,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434046","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

Synthesis of two new o-MAX phases Mo2VAlC2 and Mo2V2AlC3 and their derivatives o-MXene Mo2VC2Tx and Mo2V2C3Tx 合成两种新的 o-MAX 相 Mo2VAlC2 和 Mo2V2AlC3 及其衍生物 o-MXene Mo2VC2Tx 和 Mo2V2C3Tx

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-03 DOI: 10.1016/j.jeurceramsoc.2024.116964

Bo Wen , Yijiang Liu , Lei Cao , Xingyuan San , Yanchun Zhou , Man Jiang , Longsheng Chu , Qingguo Feng , Chunfeng Hu

{"title":"Synthesis of two new o-MAX phases Mo2VAlC2 and Mo2V2AlC3 and their derivatives o-MXene Mo2VC2Tx and Mo2V2C3Tx","authors":"Bo Wen , Yijiang Liu , Lei Cao , Xingyuan San , Yanchun Zhou , Man Jiang , Longsheng Chu , Qingguo Feng , Chunfeng Hu","doi":"10.1016/j.jeurceramsoc.2024.116964","DOIUrl":"10.1016/j.jeurceramsoc.2024.116964","url":null,"abstract":"<div><div>The out-of-plane ordered structure endows the <em>o</em>-MAX phase with more excellent properties and the derivative <em>o</em>-MXene with more promising applications. However, too few types of <em>o</em>-MAX and <em>o</em>-MXene have been synthesized for studying, significantly limiting their promising applications. In this work, two new high-purity <em>o</em>-MAX phases, Mo<sub>2</sub>VAlC<sub>2</sub> and Mo<sub>2</sub>V<sub>2</sub>AlC<sub>3</sub>, were successfully synthesized using an solid-phase reaction method and their ordered structures were demonstrated. The lattice parameters, X-ray diffraction data, and microstructure of these two <em>o</em>-MAX phases were clearly determined. Meanwhile, two new <em>o</em>-MXene, Mo<sub>2</sub>VC<sub>2</sub>T<sub>x</sub> and Mo<sub>2</sub>V<sub>2</sub>C<sub>3</sub>T<sub>x</sub>, were also obtained by etching the <em>o</em>-MAX powders in HF solution, which would expand their further interesting researches.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 2","pages":"Article 116964"},"PeriodicalIF":5.8,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418333","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

Production of complex microchanneled parts of ZrB2-MoSi2 ultra-high temperature ceramics by freeze casting and pressureless spark plasma sintering 通过冷冻铸造和无压火花等离子烧结生产 ZrB2-MoSi2 超高温陶瓷的复杂微通道部件

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-03 DOI: 10.1016/j.jeurceramsoc.2024.116966

Álvaro Sández-Gómez, Angel L. Ortiz, Pedro Miranda

{"title":"Production of complex microchanneled parts of ZrB2-MoSi2 ultra-high temperature ceramics by freeze casting and pressureless spark plasma sintering","authors":"Álvaro Sández-Gómez, Angel L. Ortiz, Pedro Miranda","doi":"10.1016/j.jeurceramsoc.2024.116966","DOIUrl":"10.1016/j.jeurceramsoc.2024.116966","url":null,"abstract":"<div><div>A novel approach for manufacturing complex parts of ultra-high-temperature ceramics (UHTCs) is proposed, combining freeze casting with pressureless spark plasma sintering (SPS). With the aid of MoSi<sub>2</sub> sintering additive (15 vol% or more), this combination enables the production of fully dense ZrB<sub>2</sub>-based UHTC parts at 1900 °C. Producing complex-shaped samples including an intricate network of internal microchannels seems feasible, by using additive manufacturing techniques in the production of templates for the external silicone mould and the internal microchannel network to be used during the freeze casting process. Although defects are prone to occur either during freeze drying, due to thermal stresses arising from the expansion mismatch between the internal resin template and the ceramic preform, or during the resin burn-out or SPS cycles, the resulting samples exhibited a fully dense microstructure and similar hardness (17 ± 1 GPa) as the bulk material. Thus, the proposed approach shows promise in the production of arbitrarily complex-shaped UHTC parts that may find application in numerous industrial sectors including aerospace, aviation, and energy generation and storage.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 2","pages":"Article 116966"},"PeriodicalIF":5.8,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Insights into pressure-driven depolarization in PLZST-based antiferroelectric ceramics 透视基于 PLZST 的反铁电陶瓷中的压力驱动去极化现象

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-02 DOI: 10.1016/j.jeurceramsoc.2024.116954

Anil Adukkadan, Deepak Sharma , Gudeta Jafo Muleta , Rajeev Ranjan

{"title":"Insights into pressure-driven depolarization in PLZST-based antiferroelectric ceramics","authors":"Anil Adukkadan, Deepak Sharma , Gudeta Jafo Muleta , Rajeev Ranjan","doi":"10.1016/j.jeurceramsoc.2024.116954","DOIUrl":"10.1016/j.jeurceramsoc.2024.116954","url":null,"abstract":"<div><div>Materials showing field-driven antiferroelectric to ferroelectric transformation are interesting for the design of pyroelectric, high strain actuator and high-power dielectric energy storage and discharge devices. The stability of the antiferroelectric and ferroelectric states at room temperature can be chemically tuned by La and Ti co-modification of the antiferroelectric system Pb(Zr<sub>1-y</sub>Sn<sub>y</sub>)O<sub>3</sub>. Here, we have chosen a composition Pb<sub>0.982</sub>La<sub>0.012</sub>(Zr<sub>0.60</sub>Sn<sub>0.30</sub>Ti<sub>0.10</sub>)O<sub>3</sub> (PLZST) at the threshold of the antiferroelectric-ferroelectric instability at room temperature and investigated the effect of electric field, temperature and pressure on the stability of the structural-polar states. We show that electric poling transforms irreversibly the antiferroelectric state into a ferroelectric state. Application of hydrostatic pressure ∼100 MPa on the field-stabilized ferroelectric phase, however, restores the antiferroelectric state and depolarizes the system.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 116954"},"PeriodicalIF":5.8,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420873","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

Compositionally complex AlB2-type diborides in dissociated air plasma 离析空气等离子体中成分复杂的 AlB2-型二硼化物

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-02 DOI: 10.1016/j.jeurceramsoc.2024.116963

F. Monteverde , C. Pellegrini , M. Balat-Pichelin , W. Fahrenholtz , G. Hilmas

引用次数: 0

Flash sintering enhanced co-doping TiO2 with Fe and Cu to improve photocatalytic efficiency 闪速烧结增强 TiO2 与 Fe 和 Cu 的共掺杂以提高光催化效率

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-01 DOI: 10.1016/j.jeurceramsoc.2024.116960

Anupam Raj , Adit Thampi , Bhavesh N. Socha , Shikhar Krishn Jha

{"title":"Flash sintering enhanced co-doping TiO2 with Fe and Cu to improve photocatalytic efficiency","authors":"Anupam Raj , Adit Thampi , Bhavesh N. Socha , Shikhar Krishn Jha","doi":"10.1016/j.jeurceramsoc.2024.116960","DOIUrl":"10.1016/j.jeurceramsoc.2024.116960","url":null,"abstract":"<div><div>Nanoparticles of TiO<sub>2</sub> doped with a transition metal are known to be effective photocatalysts. Fe and Cu co-doping in TiO<sub>2</sub> using flash sintering and its enhanced photodegradation efficiency for methylene blue (MB) are discussed here. The properties of synthesized material have been evaluated using various characterization techniques, including XRD, TEM, SEM, BET, XPS, FT-IR, and UV–visible spectroscopy. The XRD confirmed complete co-doping by using flash sintering, which was also corroborated by TEM. XPS analysis showed that the flash sintered catalyst had more defects like Ti<sup>3+</sup> and oxygen vacancies than the conventionally sintered catalyst. UV-Vis spectroscopy and dye degradation experiments showed that co-doping in TiO<sub>2</sub> with Fe and Cu narrowed the band gap, which in turn boosted its visible light sensitivity by enhancing the trapping rate of photogenerated electrons and holes. Tested on MB, flash sintered co-doped TiO<sub>2</sub> showed a higher degradation efficiency under the visible range of LED white light.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 2","pages":"Article 116960"},"PeriodicalIF":5.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418331","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

Towards lower annealing temperatures and enhanced functional properties in aerosol-deposited piezoelectric thick films: A study of the effect of Li additive on BaTiO3 films 降低气溶胶沉积压电厚膜的退火温度并增强其功能特性：锂添加剂对 BaTiO3 薄膜影响的研究

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-30 DOI: 10.1016/j.jeurceramsoc.2024.116962

Anass Chrir , Oscar Rojas , Maggy Colas , Laurence Boyer , Olivier Durand , Pascal Marchet

{"title":"Towards lower annealing temperatures and enhanced functional properties in aerosol-deposited piezoelectric thick films: A study of the effect of Li additive on BaTiO3 films","authors":"Anass Chrir , Oscar Rojas , Maggy Colas , Laurence Boyer , Olivier Durand , Pascal Marchet","doi":"10.1016/j.jeurceramsoc.2024.116962","DOIUrl":"10.1016/j.jeurceramsoc.2024.116962","url":null,"abstract":"<div><div>The effect of incorporating Li additive (Li<sub>2</sub>CO<sub>3</sub>) into aerosol deposited BaTiO<sub>3</sub> thick films was investigated. The addition of Li<sub>2</sub>CO<sub>3</sub> to the deposited powder facilitated grain growth during post deposition process, even for low annealing temperatures (≤ 700 °C). Therefore, this additive decreased the threshold for ferro/piezoelectricity recovery from 800 °C to 650 °C. Furthermore, annealing at temperatures ≥ 800 °C yielded grain sizes ranging from 100 nm to 700 nm, unprecedented in our previous investigations. Substantially improved ferroelectric and piezoelectric responses were obtained in the 800–900 °C range, with P<sub>r</sub> values doubling to 12 µA.cm<sup>−2</sup> for films annealed at 900 °C. Moreover, the use of this additive improved leakage behavior, achieving a leakage current density of 0.1 µA.cm<sup>−2</sup> and an electrical resistivity of 10<sup>11</sup> Ω.cm at 700 °C. Microscopic analyses revealed a carbon containing secondary phase at grain boundaries, probably corresponding to Li<sub>2</sub>CO<sub>3</sub>.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 2","pages":"Article 116962"},"PeriodicalIF":5.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418424","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 interface mechanical and ablative evolution behaviors under different heat flux of multiphase HfC-SiC matrix composites 不同热通量下多相 HfC-SiC 基复合材料的界面力学和烧蚀演化行为

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-30 DOI: 10.1016/j.jeurceramsoc.2024.116958

Xinhao Shi , Liping Wang , Wanbo Hou , Jiahui Ding , Tao Feng , Hongjiao Lin , Mingde Tong

{"title":"The interface mechanical and ablative evolution behaviors under different heat flux of multiphase HfC-SiC matrix composites","authors":"Xinhao Shi , Liping Wang , Wanbo Hou , Jiahui Ding , Tao Feng , Hongjiao Lin , Mingde Tong","doi":"10.1016/j.jeurceramsoc.2024.116958","DOIUrl":"10.1016/j.jeurceramsoc.2024.116958","url":null,"abstract":"<div><div>Multiphase HfC-SiC ceramic matrix composites were prepared by a combination process. The interface mechanics and ablation properties behaviors were investigated. Introducing the PyC-SiC interface, the composites showed a second-order pull-out mechanism. The mechanical failure model showed that fibers and matrix have different failure strain under load depending on the component that fails first. Moreover, the ablative airflow in the center area will spread to the edge area through the thermal shock microcracks generated. Increasing of the heat flux, the crack width gradually increased to be ditches. It accelerated the evolution of surface morphology, which showed HfC-SiC substrate was first transformed into Hf-Si-O solid solution on the process of phase transformation of oxidation products from 1680 ℃ to 2150 ℃, and eventually sintered into HfO<sub>2</sub>. The change in the morphology of oxidation product consumed more heat and protected the substrate from oxidation, resulting in improving the ablation resistance of composites.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 116958"},"PeriodicalIF":5.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420965","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