Journal of The European Ceramic Society最新文献_第4页

The ultra-low glasslike thermal conductivities of Y3+- and Ce4+- codoped lanthanum zirconate pyrochlores for potential thermal barrier coating applications Y3+- 和 Ce4+- 共掺锆酸镧热胶体的超低玻璃样热导率，可用于潜在的热障涂层应用

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-30 DOI: 10.1016/j.jeurceramsoc.2024.117038

Yanfei Wang , Weiran Zhang , Jinping Du, Duan Li, Rongjun Liu

{"title":"The ultra-low glasslike thermal conductivities of Y3+- and Ce4+- codoped lanthanum zirconate pyrochlores for potential thermal barrier coating applications","authors":"Yanfei Wang , Weiran Zhang , Jinping Du, Duan Li, Rongjun Liu","doi":"10.1016/j.jeurceramsoc.2024.117038","DOIUrl":"10.1016/j.jeurceramsoc.2024.117038","url":null,"abstract":"<div><div>It is urgent to develop thermal barrier coating (TBC) topcoat materials with ultra-low thermal conductivities for next-generation gas turbine engines. A novel pyrochlore-based single-phased ceramic, tuned by codoping of lanthanum zirconate, (La1-xYx)2(Zr1-yCey)2O7, has been synthesized from the solid state reaction method. The thermal conductivity of (La1-xYx)2(Zr1-yCey)2O7 not only exhibits a temperature-independent trend but also reaches as low as 0.93 W·m−1·K−1, a value that is lowest of fully dense crystalline solids in open literature, attributing to the following two combined effects. The first is the strong scattering of phonons by small-sized Y3+ cations occupying the oversized atomic cages formed by the distinctive pyrochlore structure. The second is the lattice softening effects arising from larger-sized Ce4+ substituting Zr4+ cations. The above two effects act in concert and thus form a glasslike and ultra-low thermal conductivity of (La1-xYx)2(Zr1-yCey)2O7 solid solutions, which is ideal for next-generation TBC topcoat applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 117038"},"PeriodicalIF":5.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593280","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

Development of electrical discharge machinable SiC-ZrN composites: Unveiling high temperature sliding wear resistance 开发可放电加工的 SiC-ZrN 复合材料：揭示高温滑动耐磨性

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-30 DOI: 10.1016/j.jeurceramsoc.2024.117040

Chodisetti Surya Prakasarao , Irfan Nadeem , Mitjan Kalin , B. Venkata Manoj Kumar

{"title":"Development of electrical discharge machinable SiC-ZrN composites: Unveiling high temperature sliding wear resistance","authors":"Chodisetti Surya Prakasarao , Irfan Nadeem , Mitjan Kalin , B. Venkata Manoj Kumar","doi":"10.1016/j.jeurceramsoc.2024.117040","DOIUrl":"10.1016/j.jeurceramsoc.2024.117040","url":null,"abstract":"<div><div>Dense SiC-(10-30 vol%) ZrN composites were developed using spark plasma sintering with AlN-Y2O3 additives at 1800 °C for 5 min in nitrogen atmosphere. The nascent oxide present on ZrN surface reduces liquid phase formation temperature, facilitating improved densification of SiC ceramics. Mechanical properties were retained, and electrical conductivity increased with ZrN addition. To demonstrate a rapid and low-cost machining alternative for SiC ceramics, SiC-ZrN composites were successfully cut using wire-EDM. The tribological potential of novel electrical discharge machinable SiC-ZrN composite disk against SiC ball at various conditions of reciprocating sliding contacts was investigated. Friction is less affected by reinforcement content at room temperature (25 ℃) but significant change is observed at high temperature (600 ℃). Minimum one order of lower wear rate is reported with an increase in temperature from 25 ℃ to 600 ℃. The major wear mechanism changed from abrasion to tribo oxidation with increase in temperature.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 117040"},"PeriodicalIF":5.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578410","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 thermal sensitivity and dielectric constants in CaCu3Ti4O12-LaMn1-xFexO3 composite ceramics by designing sandwich and core-shell structure 通过设计三明治和核壳结构实现 CaCu3Ti4O12-LaMn1-xFexO3 复合陶瓷的高热敏感性和介电常数

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-30 DOI: 10.1016/j.jeurceramsoc.2024.117041

Ruifeng Wu , Yang Zhou , Yue Xian , Yafei Liu , Hao Sun , Aimin Chang , Bo Zhang

{"title":"High thermal sensitivity and dielectric constants in CaCu3Ti4O12-LaMn1-xFexO3 composite ceramics by designing sandwich and core-shell structure","authors":"Ruifeng Wu , Yang Zhou , Yue Xian , Yafei Liu , Hao Sun , Aimin Chang , Bo Zhang","doi":"10.1016/j.jeurceramsoc.2024.117041","DOIUrl":"10.1016/j.jeurceramsoc.2024.117041","url":null,"abstract":"<div><div>In this work, a series of CaCu3Ti4O12-LaMn1-xFexO3 sandwich and core-shell structured ceramics were prepared by using the conventional solid-state method. For these structures, LaMn1-xFexO3 is encapsulated by the CaCu3Ti4O12 (CCTO) layer as a core and interlayer. These ceramics demonstrate high sensitivity with material constants (B) ranging from 7391 to 9786 K and temperature coefficients up to −7.03 %. In addition, Fe3+ doping optimizes the electronic structure of LaMnO3 (LMO) and enhances the Jahn-Taylor coupling and charge localization, thus leading to an increase in the material constant. Furthermore, the core-shell ceramics of CCTO-LMO (Co-LMO) have a high dielectric constant of 16731 at 1 kHz, which exceeds that of the CCTO samples. This enhancement can be attributed to the increase in potential differences caused by the additional carriers. The proposed schemes in this work have important implications for regulating the thermal sensitivity and permittivity of CCTO-based multifunctional coupled electronics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 117041"},"PeriodicalIF":5.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572810","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

Contact damage response of alumina-based layered architectures under different loading configurations 不同加载配置下氧化铝层状结构的接触损伤响应

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-29 DOI: 10.1016/j.jeurceramsoc.2024.117037

Josef Schlacher, Fabian Stücklberger, Abdullah Jabr, Raul Bermejo

{"title":"Contact damage response of alumina-based layered architectures under different loading configurations","authors":"Josef Schlacher, Fabian Stücklberger, Abdullah Jabr, Raul Bermejo","doi":"10.1016/j.jeurceramsoc.2024.117037","DOIUrl":"10.1016/j.jeurceramsoc.2024.117037","url":null,"abstract":"<div><div>Hertzian contact damage upon spherical indentation is investigated in alumina-based ceramics designed with embedded textured compressive layers. The effect of the location of the embedded layer and the testing configuration (parallel or normal to the layer orientation) on the sub-surface damage evolution is explored. An acoustic emission system for crack detection and post-mortem cross sectioning are employed to evaluate the onset and extension of damage in the different samples. Distinct acoustic signals detected at different contact loads are correlated with the onset of the ring crack, cone crack propagation and quasi-plastic deformation within the textured layer. The distinct damage mechanisms are influenced by the location of the embedded textured compressive layer and the loading orientation with respect to the layers. The design of layered ceramics for contact applications should consider the loading orientation as well as the contact stress field with respect to the “protective” layer to enhance damage tolerance.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 117037"},"PeriodicalIF":5.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561489","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

Influence of solid loading on microstructure evolution and thermal conductivity of aluminum nitride ceramics fabricated by digital light processing 3D printing 固体负载对数字光处理 3D 打印氮化铝陶瓷微观结构演变和导热性的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-29 DOI: 10.1016/j.jeurceramsoc.2024.117028

Yuxin Tang , Song Hu , Zhenhai Xue , Guohong Zhou

{"title":"Influence of solid loading on microstructure evolution and thermal conductivity of aluminum nitride ceramics fabricated by digital light processing 3D printing","authors":"Yuxin Tang , Song Hu , Zhenhai Xue , Guohong Zhou","doi":"10.1016/j.jeurceramsoc.2024.117028","DOIUrl":"10.1016/j.jeurceramsoc.2024.117028","url":null,"abstract":"<div><div>Efficient thermal management is essential to reduce hot spot temperature of high-power opto-electronic components and improve their working efficiency. In this work, AlN ceramics with high density and thermal conductivity properties were fabricated using a joint process of digital light processing (DLP) 3D printing and micro-pressure-assisted sintering method. Effects of solid loading on microstructure evolution and thermal properties of the ceramics were systematically discussed. AlN ceramic mini-channel heat sinks were designed and fabricated using the optimized DLP 3D printing and sintering parameters. The thermal management performances of the ceramic heat sinks were evaluated by investigating the optoelectronic property of the encapsulated laser diode module. Results indicated that the laser diode module could be long-timely operated at full driven power. This study provided a new strategy for fabricating high performance AlN ceramics with complex configurations and highlighted the technical potential of AlN ceramic heat sink with compact coolant channels.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 117028"},"PeriodicalIF":5.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554143","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 and characterization of LuAG: Er ceramics with high optical transmission 具有高透光率的 LuAG：Er 陶瓷的制备与表征

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-29 DOI: 10.1016/j.jeurceramsoc.2024.117033

A.A. Kravtsov , O.M. Chapura , V.A. Tarala , E.V. Medyanik , L.V. Tarala , V.E. Suprunchuk , F.F. Malyavin , S.V. Kuznetsov , V.S. Tsvetkov , E.A. Dobretsova , Yu.L. Kalachev , V.A. Lapin

引用次数: 0

Enhanced densification and dielectric properties of BaTiO3 through a cold-sintering pre-treatment 通过冷烧结预处理提高 BaTiO3 的致密性和介电特性

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-29 DOI: 10.1016/j.jeurceramsoc.2024.117036

Atta Ullah, Haribabu Palneedi, Sang-Chae Jeon

引用次数: 0

Microstructure and property evolution of Gd3NbO7-GdNbO4 composite thermal barrier coating Gd3NbO7-GdNbO4 复合隔热涂层的微观结构和性能演变

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-28 DOI: 10.1016/j.jeurceramsoc.2024.117026

Yang Lu , Jian Sun , Guanghua Liu , Wei Liu , Xiangyang Liu , Wei Pan , Chunlei Wan

{"title":"Microstructure and property evolution of Gd3NbO7-GdNbO4 composite thermal barrier coating","authors":"Yang Lu , Jian Sun , Guanghua Liu , Wei Liu , Xiangyang Liu , Wei Pan , Chunlei Wan","doi":"10.1016/j.jeurceramsoc.2024.117026","DOIUrl":"10.1016/j.jeurceramsoc.2024.117026","url":null,"abstract":"<div><div>To fulfill the multi-functional requirements of advanced thermal barrier coatings, composite oxides are emerging as promising candidates due to their enhanced thermal and mechanical properties. Although numerous composite materials have been developed, a comprehensive investigation of their microstructure and property evolution is still lacking. In this study, we conducted a comprehensive investigation of the microstructure and property evolution of the Gd3NbO7-GdNbO4 composite thermal barrier coating as a case study. The as-sprayed Gd3NbO7-GdNbO4 coating was verified to possess a single fluorite phase with a composition of NbxGd(1-x)O(1.5+x), which is a metastable phase. After heat treatment, the monoclinic GdNbO4 phase precipitated without altering the coating microstructure. During high-temperature thermal exposure, rapid sintering occurred, accompanied by grain coarsening and pore healing, leading to an increase in hardness and toughness. The toughness of the Gd3NbO7-GdNbO4 coating was higher than that of rare earth zirconates due to the presence of multiple toughening mechanisms. Additionally, a low thermal conductivity of 1.33 W/(m·K) was achieved for the Gd3NbO7-GdNbO4 coating due to rapid sintering. Notably, there were no abrupt changes in the CTE curves during the heating process, which is crucial for thermal barrier coatings. The CTE reaches 11.0×10−6 K−1 at 1300 °C, which is close to YSZ, indicating that the Gd3NbO7-GdNbO4 coating is suitable for advanced thermal barrier coatings.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 117026"},"PeriodicalIF":5.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658224","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

Promoting transparency: Defect-driven sintering of Gd2Zr2O7 ceramics for advanced radiation applications 提高透明度：用于先进辐射应用的 Gd2Zr2O7 陶瓷的缺陷驱动烧结

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-28 DOI: 10.1016/j.jeurceramsoc.2024.117030

Lexing Liang , Junjing Duan , Cong Zhang , Heqi Zhang , Kailei Lu , Yanli Shi , Jianqi Qi , Tiecheng Lu

{"title":"Promoting transparency: Defect-driven sintering of Gd2Zr2O7 ceramics for advanced radiation applications","authors":"Lexing Liang , Junjing Duan , Cong Zhang , Heqi Zhang , Kailei Lu , Yanli Shi , Jianqi Qi , Tiecheng Lu","doi":"10.1016/j.jeurceramsoc.2024.117030","DOIUrl":"10.1016/j.jeurceramsoc.2024.117030","url":null,"abstract":"<div><div>Transparent Gd2Zr2O7 (GZO) ceramics show significant potential for radiation detection and nuclear energy applications. However, scalable production through cost-effective solid-state vacuum sintering is challenging due to the material's high melting point and low thermal conductivity. This study introduces a novel approach by incorporating excess Gd to increase lattice defects, such as cation disorder and oxygen vacancies, which have low formation energy. This strategy lowers the energy barrier for ion diffusion, enhances material migration during sintering, and promotes the elimination of residual pores, leading to high densification. We examined the densification behavior of GZO compositions with varying Gd content (Gd1.8Zr2O6.7 to Gd2.5Zr2O7.75) during vacuum sintering at 1450°C to 1900°C, focusing on phase transformation, grain growth, and pore elimination. Notably, the optimal sample achieved 78.3 % transmittance, approaching the theoretical maximum. These findings offer a promising route for the large-scale production and commercialization of transparent GZO ceramics for advanced radiation applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 3","pages":"Article 117030"},"PeriodicalIF":5.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577801","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

Ultrafast high-temperature sintering of aluminum nitride 氮化铝的超快高温烧结

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-10-28 DOI: 10.1016/j.jeurceramsoc.2024.117025

Minwook Kim , Unseo Kim , Seon-Gyu Kim , Yunsang Kwak , Sung-Soo Ryu , Jaehun Cho

引用次数: 0