Processing and Application of Ceramics最新文献_第7页

Synthesizing of zirconium nitride powders by dynamic thermochemical method 动态热化学法制备氮化锆粉体

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2204303o

B. Özdemir, N. Canikoğlu

引用次数: 0

Enhanced volatile organic compound sensing properties of BiFeO3 by carbon fibres addition 碳纤维的加入增强了BiFeO3的挥发性有机化合物感测性能

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2204310o

M. Oughanem, R. Douani, N. Lamrani, Y. Guhel, A. Chaouchi, B. Boudart

{"title":"Enhanced volatile organic compound sensing properties of BiFeO3 by carbon fibres addition","authors":"M. Oughanem, R. Douani, N. Lamrani, Y. Guhel, A. Chaouchi, B. Boudart","doi":"10.2298/pac2204310o","DOIUrl":"https://doi.org/10.2298/pac2204310o","url":null,"abstract":"In the present work, pure BiFeO3 (BFO) particles were synthesized by sol-gel method and mixed with carbon fibre to form composites (x%CFs-BFO, where x corresponds to 0, 4, 8 and 10 wt.%) by hydrothermal treatment at 150?C. The resulting composite powders were characterized by X-ray diffraction, Raman spectroscopy, nitrogen adsorption/desorption isotherm and scanning electron microscopy (SEM-EDX). The synthesized powders were used for gas sensors preparation by manual deposition of their mixture with polyvinyl alcohol on alumina tubes ending with two silver electrodes. The impedance of the sensitive layers was determined by impedance spectroscopy in the temperature range 100-250?C at different gaseous concentrations. The detection properties of the fabricated sensors for various volatile organic compounds were investigated. The sensors showed better sensitivity to acetone compared to other gases. The addition of carbon fibres improved the sensitivity to acetone vapour from 64 to 135% at 100 ppm and reduced the optimum operating temperature of the sensors by 20?C and the response and recovery times from (26 s/15 s) to (18 s/10 s). This study revealed that x%CFs-BiFeO3 composites are promising candidates for gas sensors.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68582247","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: 1

Optimization of La0.6Sr0.4Co0.2Fe0.8O3-α - Ba(Ce0.6Zr0.4)0.9Y0.1O3-δ cathode composition for proton ceramic fuel cell application 质子陶瓷燃料电池阴极组成La0.6Sr0.4Co0.2Fe0.8O3-α - Ba(Ce0.6Zr0.4)0.9Y0.1O3-δ的优化

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2204374i

I. Ismail, Nurul Izzati Malek, A. Jani, M. Othman, N. Osman

{"title":"Optimization of La0.6Sr0.4Co0.2Fe0.8O3-α - Ba(Ce0.6Zr0.4)0.9Y0.1O3-δ cathode composition for proton ceramic fuel cell application","authors":"I. Ismail, Nurul Izzati Malek, A. Jani, M. Othman, N. Osman","doi":"10.2298/pac2204374i","DOIUrl":"https://doi.org/10.2298/pac2204374i","url":null,"abstract":"Composite cathodes consisting of different compositional ratios of La0.6Sr0.4Co0.2Fe0.8O3-? (LSCF) and Ba(Ce0.6Zr0.4)0.9Y0.1O3-? (BCZY64), namely 100LSCF:0BCZY64 (L10B0), 70LSCF:30BCZY64 (L7B3), 50LSCF:50BCZY64 (L5B5) and 30LSCF:70BCZY64 (L3B7) were prepared via wet chemistry method. The symmetrical cell with a configuration of electrode|BCZY64|electrodewas fabricated using dry-pressingmethod for the electrolyte substrate and spin-coating technique for the cathode layer. The proton conduction in the composite cathode increases as the amount of proton-conducting phase increases as verified by the water uptake measurement performed via thermogravimetric analysis. The thickness of the composite cathode layer is about 15 ?m as observed by a scanning electron microscope and exhibits a well-connected particle network with sufficient porosity for oxidant diffusion (20-30%). The electrochemical performance of the symmetrical cell was investigated by electrochemical impedance spectroscopy in humidified air. The area-specific resistance (ASR) values of the tested cathodes follow the order of L7B3 < L10B0 < L5B5 < L3B7 and are 0.07 < 0.24 < 0.30 < 0.52W?cm2 at 700?C, respectively. The correlation between the cathode performance and cathode composition was investigated and the corresponding mechanism was systematically postulated.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68582370","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

Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content 随着Cr2O3含量的增加，Al2O3-Cr2O3陶瓷体系的力学性能和储存弹性能破碎度的研究

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2204351k

Betül Kafkaslıoğlu Yıldız, Y. Tür

{"title":"Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content","authors":"Betül Kafkaslıoğlu Yıldız, Y. Tür","doi":"10.2298/pac2204351k","DOIUrl":"https://doi.org/10.2298/pac2204351k","url":null,"abstract":"In the present study, densification, mechanical properties (elastic modulus, hardness, flexural strength) and stored elastic energy-fragmentation of the pure Al2O3 and Al2O3-Cr2O3 ceramics with different Cr2O3 volume content (0.5, 1, 3, 5, 10 and 20 vol.%) were investigated. The fragmentation behaviour was interpreted from the point of armour application as larger fragments are required for higher penetration resistance. The equibiaxial flexural strength test method was used to measure the fracture strength values. A similar densification behaviour was obtained for the pure Al2O3 and the Al2O3-Cr2O3 ceramic specimens with 0.5, 10 and 20 vol.% Cr2O3 with the obtained relative densities of around 97%TD. The elastic modulus of the pure Al2O3 and Al2O3-Cr2O3 ceramic specimens showed consistent values with the densification except for the Al2O3-Cr2O3 ceramics containing 20 vol.% Cr2O3. All Al2O3-Cr2O3 ceramics have lower flexural strength values than the pure Al2O3. The pure Al2O3 had the smallest crack surface area accompanying the largest fragment size for given fracture energy. This indicates that the pure Al2O3 will break into larger pieces in case of a possible impact.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68582051","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

Microstructure and mechanical properties of b4c-tib2 composites reactive sintered from B4C + TiO2 precursors B4C + TiO2前驱体反应烧结B4C -tib2复合材料的微观结构和力学性能

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2204358s

P. Švec, Ľ. Čaplovič

引用次数: 0

The effect of alkaline earth metal substitution on thermoelectric properties of A0.98La0.02MnO3-δ (A=Ca,Ba) 碱土金属取代对A0.98La0.02MnO3-δ (A=Ca,Ba)热电性能的影响

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2201078s

S. Singh, N. Kanas, M. Einarsrud, K. Wiik

引用次数: 2

Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures Fe3O4/SiO2/TiO2、SrFe12O19/SiO2/TiO2和Fe3O4/SiO2/ZnO核/壳/壳纳米结构的合成、表征及光催化效率

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2203291b

Fatemeh Bavarsiha, Saeideh Dadashian, M. Montazeri-Pour, Fardin Ghasemy-Piranloo, M. Rajabi

{"title":"Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures","authors":"Fatemeh Bavarsiha, Saeideh Dadashian, M. Montazeri-Pour, Fardin Ghasemy-Piranloo, M. Rajabi","doi":"10.2298/pac2203291b","DOIUrl":"https://doi.org/10.2298/pac2203291b","url":null,"abstract":"In this research, three magnetically separable photocatalysts, Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO, with core/shell/shell structures were successfully prepared. In the first step, soft magnetic and hard magnetic Fe3O4 and SrFe12O19 powders were synthesized using carbon reduction and co-precipitation routes, respectively. In the second step, silica coating was performed by controlling the hydrolysis and con- densation of tetraethyl orthosilicate (TEOS) precursor on the magnetic cores. In the third step, a layer of TiO2 or ZnO photocatalytic shells was made on the as-prepared composites using titanium n-butoxide (TNBT) or zinc nitrate hexahydrate, respectively. The formation of the core/shell/shell structures was confirmed by FESEM and TEM analyses. The saturation magnetizations of the Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO photocatalytic materials were 41.5, 33 and 49 emu/g, respectively. Photocatalytic activity was evaluated by degradation percentages of methylene blue (MB) under UV illumination, which were 88%, 83% and 62%, for the Fe3O4/SiO2/TiO2, SrFe12O19//TiO2 and Fe3O4/SiO2/ZnO composites, respectively. The first-, and second-order reaction kinetics were used to find out the suitable MB removal kinetics.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68581528","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

Development of a new system of solid ionic conductors based on multi-doped ceria for application in IT-SOFCs 基于多掺杂氧化铈的新型固体离子导体体系在it - sofc中的应用

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2204391s

M. Stojmenović, N. Nisic, M. Zunic, F. Basoli, Jelena Gulicovki, I. Ristovic, M. Kragović

{"title":"Development of a new system of solid ionic conductors based on multi-doped ceria for application in IT-SOFCs","authors":"M. Stojmenović, N. Nisic, M. Zunic, F. Basoli, Jelena Gulicovki, I. Ristovic, M. Kragović","doi":"10.2298/pac2204391s","DOIUrl":"https://doi.org/10.2298/pac2204391s","url":null,"abstract":"Nanosized multi-doped ceria with composition Ce0.8Nd0.0025Sm0.0025Gd0.005Dy0.095Y0.095O2-? (CNSGDY) as perspective solid ionic conductor was obtained by modified glycine-nitrate procedure (MGNP) and room temperature self-propagating reaction (SPRT). The pressed pellets of both powders were sintered at 1550?C for 2 h in an air atmosphere. The obtained sintered samples were characterized by XRPD, Raman spectroscopy, FESEM, EDS and EIS methods. Despite a high temperature of sintering, XRPD and FESEM analyses of the samples confirmed appropriate dimensions of grains with fluorite structure. Overall concentration of introduced dopants (x = 0.2) in the structure of CeO2 after the sintering process was confirmed by EDS analysis. After sintering, Raman spectroscopy confirmed retention of the oxygen vacancies in the ceria lattice, which is in accordance with the improvement of ionic conductivity of solid ionic conductors. The highest value of total conductivity was obtained for the sintered MGNP sample at 700?C (4.22 ? 10?2 S cm?1), with the corresponding activation energy of 0.26 eV.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68582478","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: 1

α-tricalcium phosphate/fluorapatite-based cement - promising dental root canal filling material α-磷酸三钙/氟磷灰石基骨水泥:一种很有前途的根管填充材料

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2201022k

A. Kazuz, Ž. Radovanović, Djordje Veljovic, V. Kojić, D. Jakimov, Tamara Vlajic-Tovilovic, V. Miletic, R. Petrović, Djordje Janackovic

{"title":"α-tricalcium phosphate/fluorapatite-based cement - promising dental root canal filling material","authors":"A. Kazuz, Ž. Radovanović, Djordje Veljovic, V. Kojić, D. Jakimov, Tamara Vlajic-Tovilovic, V. Miletic, R. Petrović, Djordje Janackovic","doi":"10.2298/pac2201022k","DOIUrl":"https://doi.org/10.2298/pac2201022k","url":null,"abstract":"?-Tricalcium phosphate/fluorapatite (?-TCP/FAp) mixed powders were prepared in order to obtain dental root canal filling cements. Different liquids for cement pastes have been investigated and the most suitable one for obtaining rheologically optimal pastes was chosen for further analysis. Morphological changes in the cement materials as a consequence of the formation of hydroxyapatite (HAp) after the immersion in a simulated body fluid (SBF), an influence on the cell viability, and final success of the filling were investigated by field emission scanning electron microscopy. Treatment of the ?-TCP/FAp mixtures in SBF at 37?C resulted in a complete transformation of ?-TCP into HAp after 10 days, while the exposure of MRC-5 human and L929 animal fibroblast cells to the cement showed complete absence of cytotoxicity. The root canal of an extracted tooth was filled with the ?-TCP/FAp cement containing 5 wt.% of FAp and relatively strong adhesion between the cement and dentine was observed after 48h. The same cement material was immersed during 10 days in SBF and after that both human and animal fibroblast cells during in vitro MTT tests showed higher cell viability compared to the control sample. These findings lead to a conclusion that the ?-TCP/FAp based cement demonstrates potential for further development towards dental cement application.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68579581","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

Enhanced dielectric properties and energy storage density of Mg-doped SrTiO3 nanowire films 镁掺杂SrTiO3纳米线薄膜的介电性能和储能密度增强

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2201055h

Mahsa Harooni, A. Sadeghzadeh‐Attar

引用次数: 2