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

Effect of graphene oxide on micro-tribological and electrochemical properties of electrophoretically deposited HA-TiO2-GO composite coatings 氧化石墨烯对电泳沉积HA-TiO2-GO复合涂层微摩擦学和电化学性能的影响

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2201030r

Neda Ramezannejad, H. Farnoush

引用次数: 1

Mechanical properties of large-sized thin architectural ceramic plate enhanced by alumina fibres and in situ mullite whiskers 氧化铝纤维和原位莫来石晶须增强大尺寸建筑陶瓷薄板的力学性能

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2202183z

Xinzi Zhong, Liyun Cao, Jianfeng Huang, Yijun Liu, Haibo Ouyang, Qinggang Wang

{"title":"Mechanical properties of large-sized thin architectural ceramic plate enhanced by alumina fibres and in situ mullite whiskers","authors":"Xinzi Zhong, Liyun Cao, Jianfeng Huang, Yijun Liu, Haibo Ouyang, Qinggang Wang","doi":"10.2298/pac2202183z","DOIUrl":"https://doi.org/10.2298/pac2202183z","url":null,"abstract":"The fibres reinforced thin architectural ceramic plates of 900?1800?2.5mm with excellent mechanical properties were prepared by fast-sintering method using a controllable fibre dispersion process. The effects of ball-milling time on dispersity, average length-to-diameter ratio and microstructure of alumina fibres were investigated. Meanwhile, the effects of alumina fibre contents on the bulk density, water absorption, phase transformation and microstructure of the thin ceramic plate were researched. It was found that the two-step ball-milling process can effectively control the average length-to-diameter ratio of alumina fibres, achieving a good dispersion mixture of fibres and ceramic powders. Ceramics bulk density and bending strength increase with fibre contents rise from 0 to 5 wt.% and then decrease with further fibre content addition from 5 to 15wt.%. The in situ formed mullite whiskers via fast-sintering method are beneficial for protecting fibres and fibre/matrix interfaces. The maximum value of bending strength and fracture toughness reach 147MPa for 5 wt.% fibre contents and 2.6MPa?m1/2 for 9 wt.%fibre contents, corresponding to the strengthening of alumina fibres and the formation of mullite whiskers in fibre/matrix interfaces and matrix via fast-sintering process.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68581275","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: 3

The effects of processing parameters on structure of mesoporous γ-alumina granules synthesized by sol-gel/oil-drop method: Modelling via response surface methodology 工艺参数对溶胶-凝胶/油滴法合成介孔γ-氧化铝颗粒结构的影响:响应面法模拟

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2203267m

B. Mohammadi, S. Shabani, S. Mirkazemi, Y. Vahidshad, Akram Dorani

{"title":"The effects of processing parameters on structure of mesoporous γ-alumina granules synthesized by sol-gel/oil-drop method: Modelling via response surface methodology","authors":"B. Mohammadi, S. Shabani, S. Mirkazemi, Y. Vahidshad, Akram Dorani","doi":"10.2298/pac2203267m","DOIUrl":"https://doi.org/10.2298/pac2203267m","url":null,"abstract":"Sol-gel/oil-drop granulation technique was used to prepare mesoporous ?-Al2O3 granules of 1.5-2mm with high specific surface area and pore volume of 295m2/g and 0.47 cm3/g, respectively. The structure of granules was studied using powder XRD, DTA, TEM and N2 adsorption/desorption techniques. A response surface methodology (RSM) holding CCD approach was used for modelling the influence of process variables on the granule pore structure, having a quadratic function relating the independent variables (calcination temperature, acid amount and ammonia concentration) to the responses (specific surface area, mean pore diameter and pore volume). The interaction effect of variables on each response was studied and all were in acceptable accordance with experimental values. Accordingly, the granules synthesized using 20ml of nitric acid, aged in a 9.25wt.% ammonia solution and calcined at 450?C showed the best properties. The predicted values for the specific surface area and pore volume were 315.64m2/g, 7 nm and 0.53 cm3/g, respectively, which were compatible with experimental values.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"33 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68581601","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

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":"422 1","pages":""},"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

Effect of sintering temperatures on the magnetoelectric properties of Bi0.78La0.08Sm0.14Fe0.85Ti0.15O3 ceramics 烧结温度对Bi0.78La0.08Sm0.14Fe0.85Ti0.15O3陶瓷磁电性能的影响

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2202089a

Hongmin Ao, Heng Wu, Wenchuan Li, Mengshuang Lan, Zhixin Zeng, Qin Zhang, R. Gao, X. Deng, Gang Chen, C. Fu, Zhenhua Wang, X. Lei, W. Cai

{"title":"Effect of sintering temperatures on the magnetoelectric properties of Bi0.78La0.08Sm0.14Fe0.85Ti0.15O3 ceramics","authors":"Hongmin Ao, Heng Wu, Wenchuan Li, Mengshuang Lan, Zhixin Zeng, Qin Zhang, R. Gao, X. Deng, Gang Chen, C. Fu, Zhenhua Wang, X. Lei, W. Cai","doi":"10.2298/pac2202089a","DOIUrl":"https://doi.org/10.2298/pac2202089a","url":null,"abstract":"Multiferroic materials attracted much attention because of magnetoelectric (ME) coupling effect. Herein, a typical single-phase multiferroic BiFeO3 (BFO) was co-doped at A and B sites by solid-state method, and Bi0.78La0.08Sm0.14Fe0.85Ti0.15O3 (BLSFTO) ceramics were prepared at different sintering temperatures (940, 960, 980 and, 1000?C). The effects of sintering temperature on the microstructure, morphology, dielectric, ferroelectric and magnetic properties were systematically studied. The remanent polarization (Pr) and coercive field (Ec) of the BLSFTO ceramics show a non-linear change with sintering temperature. The remanent polarization reaches maximum (0.0560 ?C/cm2) in the sample sintered at 1000?C, whereas the maximum Ec of 1.32 kV/cm was obtained in the specimen sintered at 940?C. The remanent magnetization (Mr) increases with the increase of sintering temperature, while change of the saturation magnetization with sintering temperature is negligible. When BLSFTO specimen is sintered at 1000?C, Mr reaches the maximal value of 0.1344 emu/g.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68580454","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

Doping of alumina ceramics by manganese - thermodynamical and experimental approach 锰掺杂氧化铝陶瓷的热力学与实验研究

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2201013s

J. Svoboda, K. Drdlíková, D. Drdlík, A. Kroupa, J. Michalička, K. Maca

{"title":"Doping of alumina ceramics by manganese - thermodynamical and experimental approach","authors":"J. Svoboda, K. Drdlíková, D. Drdlík, A. Kroupa, J. Michalička, K. Maca","doi":"10.2298/pac2201013s","DOIUrl":"https://doi.org/10.2298/pac2201013s","url":null,"abstract":"The preparation of a transparent ultra-fine-grained doped ceramics requires a homogeneous dopant distribution in a matrix. In the present work, two thermodynamical phenomena allowing the preparation of such ceramics (the dissolution of the dopant and the formation of undesirable secondary phases) were experimentally and theoretically studied. A general thermodynamic-kinetic model was developed for dopant dissolution, which was verified for the experimental conditions used in this work. The model and experiment showed that Mn3O4 dopant with overall concentration of 1 at.% and particle size of 50 nm is dissolved and homogenized in a fine-grained alumina matrix within less than one hour at a temperature of 1220 ?C. For the purposes of the study of the formation of undesired secondary phase, the phase diagram of the Al2O3-Mn3O4 system was calculated using the CALPHAD approach. Detailed STEM observations combined with EDX and EELS chemical analyses showed that the data used for the calculation of the phase diagram need some modifications because they overestimate the solubility of Mn in the alumina and underestimate the solubility of Mn in the MnAl2O4 spinel.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68579486","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: 2

Formation of ceramic bodies using submicron msno3 (m = ba, zn, ca) particles and evaluation of their electric behaviour in different atmospheres 亚微米msno3 (m = ba, zn, ca)颗粒陶瓷体的形成及其在不同气氛下的电行为评价

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2203237o

Y. Ochoa-Muñoz, M. Álvarez‐Láinez, J. Rodríguez-Páez, D. Mejía

{"title":"Formation of ceramic bodies using submicron msno3 (m = ba, zn, ca) particles and evaluation of their electric behaviour in different atmospheres","authors":"Y. Ochoa-Muñoz, M. Álvarez‐Láinez, J. Rodríguez-Páez, D. Mejía","doi":"10.2298/pac2203237o","DOIUrl":"https://doi.org/10.2298/pac2203237o","url":null,"abstract":"In this work, the most suitable conditions were determined for shaping ceramic bodies of the MSnO3 system (M = Ba, Zn, Ca), using submicron particles of these perovskites synthesized by a chemical route. For this, the rheological behaviours of colloidal suspensions of the MSnO3 powders (M = Ba, Zn, Ca) were studied considering the effects of solid content and concentration of ammonium polyacrylate (APA). The results indicated that the optimal solids contents for stable suspensions in each system were 13.8 (BaSnO3), 19.4 (ZnSnO3), and 21.5 vol.% (CaSnO3). The suspensions containing BaSnO3 and ZnSnO3 showed large reductions in viscosity, approximately 87%, when APA (0.5-0.8wt.%) was added. In contrast, the CaSnO3 suspension did not show significant changes after addition of APA. Slip casting of the stable suspensions allowed formation of porous green bodies, which were subsequently sintered in the range 1000-1500 ?C. Considering their potential use as gas sensors, a preliminary study of the sintered bodies showed high detection responses (Ra/Rg) toward 80 ppm reducing gas at operating temperature of 270 ?C, especially ZnSnO3 to acetone and ethanol vapours, BaSnO3 to ethanol vapour and CaSnO3 to toluene vapour.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68581754","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":"1 1","pages":""},"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