Processing and Application of Ceramics最新文献

Fabrication, structure and complex dielectric properties of SrFeO3-LaFeO3 ceramic composites SrFeO3-LaFeO3陶瓷复合材料的制备、结构及复合介电性能

4区材料科学

Processing and Application of Ceramics Pub Date : 2025-01-01 DOI: 10.2298/pac2501050w

Wu Xiaoyu, Wei Li, Ziheng Huang, Depeng Wang, Weitian Wang

引用次数: 0

Preparation and properties of novel tungstate SrLa6W10O40: Eu3+ phosphors 新型钨酸盐SrLa6W10O40: Eu3+荧光粉的制备及性能研究

4区材料科学

Processing and Application of Ceramics Pub Date : 2024-01-01 DOI: 10.2298/pac2401109f

Guo Feng, Xiao‐Long Huang, Feng Jiang, Qing Yang, Wenwei Jin, Chuan Shao, Jianmin Liu, Dahai Wang, Jian Liang

{"title":"Preparation and properties of novel tungstate SrLa6W10O40: Eu3+ phosphors","authors":"Guo Feng, Xiao‐Long Huang, Feng Jiang, Qing Yang, Wenwei Jin, Chuan Shao, Jianmin Liu, Dahai Wang, Jian Liang","doi":"10.2298/pac2401109f","DOIUrl":"https://doi.org/10.2298/pac2401109f","url":null,"abstract":"Novel tungstate SrLa6-xW10O40: xEu3+ (x = 0, 0.03, 0.06, 0.09, 0.12, 0.15, 0.18, 0.21) red phosphors were prepared by solid state method at 1150 ?C by using SrCO3, La2O3, WO3 and Eu2O3 as raw materials. The powders were agglomerated with particles having mostly spheroidal morphology, mean particle size D50 = 12.8 ?m and narrow particle size distribution. With the increase of doping amount x, there is no significant difference in the diffraction peak position of the phosphor, but the cell volume of SrLa6W10O40 slowly decreases. The relative strength of diffraction peaks decreases gradually and the half-peak width widens gradually, indicating that the inclusion of Eu3+ ions affects the crystallization of the SrLa6W10O40 matrix. Excitation and emission spectra of the prepared samples were obtained. The optimal doping content has the SrLa5.85W10O4: 0.15Eu3+ phosphor and is characterised with the colour coordinate of (0.652, 0.348), which is closer to the red standard colour (0.67, 0.33) than the near-ultraviolet red phosphor Y2O2S: Eu3+ (0.622, 0.351) used for commercial LED.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"18 1","pages":"109-116"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.doiserbia.nb.rs/ft.aspx?id=1820-61312401109F","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Conch-shell-inspired porcelain ceramic tile/Kevlar fabric composites with excellent combination of strength, toughness and shock resistance 以海螺为灵感的陶瓷瓷砖/凯夫拉纤维复合材料，具有优异的强度，韧性和抗震性

4区材料科学

Processing and Application of Ceramics Pub Date : 2024-01-01 DOI: 10.2298/pac2401020z

Xinzi Zhong, Liyun Cao, Jianfeng Huang, Yijun Liu, Xuetao Shen, Zhao Yong, Dongping Wang, Zhiwen Cheng, Ting Liu, Shuai Zhang, Chenlei Zhang

{"title":"Conch-shell-inspired porcelain ceramic tile/Kevlar fabric composites with excellent combination of strength, toughness and shock resistance","authors":"Xinzi Zhong, Liyun Cao, Jianfeng Huang, Yijun Liu, Xuetao Shen, Zhao Yong, Dongping Wang, Zhiwen Cheng, Ting Liu, Shuai Zhang, Chenlei Zhang","doi":"10.2298/pac2401020z","DOIUrl":"https://doi.org/10.2298/pac2401020z","url":null,"abstract":"For various engineering applications in public, ceramics with exceptional strength, toughness and shock resistance are imminently required, but traditional ceramics struggle to meet these demands due to their fragility. Inspired by the shape of natural conch shells, this work offers a simple hot press approach to fabricate layered porcelain ceramic tile/Kevlar fabric composites, yielding excellent mechanical properties and the capacity for non-catastrophic failure. It was concluded that composites? excellent mechanical performance is attributed to the resin/fabric content. The composite with the resin/fabric content of 45.5 vol.% had an outstanding combination of high strength (310.5 ? 6.2MPa) and excellent fracture toughness (6.83 ? 0.09MPa?m1/2), whereas the sample with 36.4 vol.% resin/fabric content had the maximal impact energy of 2.04 ? 0.09 J, which is much better than those of traditional ceramics. The strong resistance to fracture is a result of the proper interfacial bonding and the presence of elastic component, which enables toughening mechanisms such as crack deflection, fibre pull-out and interfacial debonding. This finding provides useful guidance for replacing lowperformance ceramics in engineering applications with cost-effective ceramic composites.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"18 1","pages":"20-28"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.doiserbia.nb.rs/ft.aspx?id=1820-61312401020Z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147897820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Sm/Al modified Sn0.94Sb0.06O2 ceramics for NTC thermistors Sm/Al改性sn0.94 sb0.060 o2陶瓷NTC热敏电阻

4区材料科学

Processing and Application of Ceramics Pub Date : 2024-01-01 DOI: 10.2298/pac2402162z

You Zhang, Hong Zhang, Hao Chen, Yifei Zhan, Zhicheng Li, Senlin Leng

引用次数: 5

Preparation and properties of Eu3+ doped tungstate red phosphor powders 掺Eu3+钨酸盐红色荧光粉粉体的制备及性能研究

4区材料科学

Processing and Application of Ceramics Pub Date : 2024-01-01 DOI: 10.2298/pac2402156w

Yaping Wang, Anqin Liu, Zhijuan Li, Zhuo Wang, Yunxia Chen

{"title":"Preparation and properties of Eu3+ doped tungstate red phosphor powders","authors":"Yaping Wang, Anqin Liu, Zhijuan Li, Zhuo Wang, Yunxia Chen","doi":"10.2298/pac2402156w","DOIUrl":"https://doi.org/10.2298/pac2402156w","url":null,"abstract":"NaY(WO4)2:Eu3+ phosphors were synthesized using high-temperature solid state method. The effects of Eu3+ doping concentrations on structure and photoluminescence properties of the powders were investigated. The results indicate that the pure NaY(WO4)2:Eu3+ phase can be produced by calcining at 800?C where Eu3+ doping does not alter the main phase structure. Eu3+ ions were successfully incorporated into the crystal lattice, replacing Y3+ at the B-site. This caused gradual shifts of the characteristic X-ray diffraction peaks to lower 2? angles. Morphological characterization revealed that the sample particles had irregular polygonal shapes with sizes ranging from 100 to 300 nm. There was minimal variation in morphology among samples with different doping concentrations. The samples exhibited the characteristic spectral emission of Eu3+ and emitted red light at a wavelength of 616 nm when excited by 394 nm near-ultraviolet light. The luminescence intensity of the nanophosphor gradually increased with increasing Eu3+ doping concentration, reaching its maximum at a doping ratio of 0.6, followed by a decrease due to the concentration quenching. The quenching mechanism was analysed to be primarily dipole-dipole interaction, in accordance with the Dexter?s theory of doping concentration. The luminescence positions of the phosphors slightly changed with varying Eu3+ doping concentrations, and the colour coordinates closely matched the standard value of the red colour in the National Television Standards Committee, confirming the stability of the obtained powders as red phosphors.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"18 2","pages":"156-161"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.doiserbia.nb.rs/ft.aspx?id=1820-61312402156W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

Influence of sintering temperature on structure and mechanical properties of polycrystalline cubic boron nitride composites 烧结温度对多晶立方氮化硼复合材料组织和力学性能的影响

4区材料科学

Processing and Application of Ceramics Pub Date : 2024-01-01 DOI: 10.2298/pac2402180m

Peicheng Mo, Jia‐Rong Chen, Xiaoyi Pan, Zhang Jun, Kai Li, Chao Chen

引用次数: 1

Low-temperature dielectric and impedance properties of Ba1-xSrxTiO3 and BaTi1-xTaxO3 ceramics Ba1-xSrxTiO3和BaTi1-xTaxO3陶瓷的低温介电和阻抗特性

4区材料科学

Processing and Application of Ceramics Pub Date : 2023-01-01 DOI: 10.2298/pac2303286w

Depeng Wang, Ruifeng Niu, Liqi Cui, Weitian Wang

引用次数: 0

Effect of grain growth in bimodal microstructure on cutting performance of self-toughening Dy-α-SiAlON ceramic tool inserts 双峰组织晶粒长大对自增韧Dy-α-SiAlON陶瓷刀具切削性能的影响

4区材料科学

Processing and Application of Ceramics Pub Date : 2023-01-01 DOI: 10.2298/pac2303321g

Beichen Gao, Weinila Abulaiti, Zheng Guan, Limeng Liu

{"title":"Effect of grain growth in bimodal microstructure on cutting performance of self-toughening Dy-α-SiAlON ceramic tool inserts","authors":"Beichen Gao, Weinila Abulaiti, Zheng Guan, Limeng Liu","doi":"10.2298/pac2303321g","DOIUrl":"https://doi.org/10.2298/pac2303321g","url":null,"abstract":"Although significant increase in mechanical properties has been achieved in ?-SiAlON ceramics by introducing self-toughening bimodal microstructure, the bimodal microstructure may not always result in better cutting performance of ?-SiAlON tool inserts. Herein Dy-?-SiAlON ceramics were prepared by hot-pressing at 1900?C under 30MPa. Diameter and aspect ratio of the large elongated ?-SiAlON grains pivotal to formation of bimodal microstructures were regulated by using 0-5wt.% Dy2O3 as a sintering additive. Mechanical properties and cutting performance of ?-SiAlON tool inserts were evaluated. The results showed good Vickers hardness (19.0-19.7GPa) and fracture toughness (3.61-4.18MPa?m1/2) increasing with crack propagation length. However, transverse section of the large elongated grains was revealed as critical crack to cause premature fracture of the ?-SiAlON ceramics. Fracture rather than attrition wear was recognized as dominant mechanism for tool failure, indicating that for better cutting performance of the ?-SiAlON tool inserts a selftoughening microstructure consisting of thinner grains with large aspect ratio is required.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135312345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 of polycrystalline cubic boron nitride composites under high pressure 高压制备多晶立方氮化硼复合材料

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2023-01-01 DOI: 10.2298/pac2302157m

P. Mo, Jiarong Chen, Chao Chen, Haiqing Qin, F. Lin

引用次数: 0

Effect of Al2O3 on migration and distribution of chromium and chromium fixation effect in stainless-steel slag glass-ceramics Al2O3对不锈钢渣微晶玻璃中铬迁移分布及固铬效果的影响

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2023-01-01 DOI: 10.2298/pac2301070z

Chuanbo Zhang, Z. Tong, Congcong Xu, Jiaxing Wang, Zhiheng Jia

{"title":"Effect of Al2O3 on migration and distribution of chromium and chromium fixation effect in stainless-steel slag glass-ceramics","authors":"Chuanbo Zhang, Z. Tong, Congcong Xu, Jiaxing Wang, Zhiheng Jia","doi":"10.2298/pac2301070z","DOIUrl":"https://doi.org/10.2298/pac2301070z","url":null,"abstract":"Stainless-steel slag was used to prepare glass-ceramics, which could solidify chromium (Cr) in the slag. The migration and distribution state of chromium in the slag during the preparation of the glass-ceramics have a great influence on the chromium fixation ability of the glass-ceramics. In this paper, the effects of Al2O3 content in the glass-ceramics on the migration and distribution of chromium during the nucleation and crystallization steps, and on the chromium fixation effect of the glass-ceramics were systematically studied. The results show that in the nucleation stage, with the increase of Al2O3 content, the number of chromium spinel (Cr-spinel) nanocrystals formed in the glass first increases and then decreases, and Cr in the glass phase gradually migrates to Cr-spinel nanocrystals. TEM and XPS analyses show that during crystallization, part of Cr in Cr-spinel diffuses into diopside lattice, and the other part of Cr still exists in Cr-spinel wrapped by diopside. Cr in the glass phase also diffuses and migrates into the diopside lattice with the formation of diopside crystals. The optimal Al2O3 content is 11.8wt.%, which results in 97.94wt.% of the total Cr being fixed in the diopside crystalline phase. The ability of chromium fixation is very high giving a very low Cr leaching concentration of 0.004mg/l. The research results provide theoretical and technical support for increased chromium fixation and realizing harmless and high-value utilization of stainless-steel slag.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68582840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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