Processing and Application of Ceramics最新文献_第9页

Preparation and performance of g-C3N4/CuS film as counter electrode for quantum dot sensitized solar cells 量子点敏化太阳能电池对电极g-C3N4/ cu膜的制备及性能

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2202167c

Xiaopeng Chang, Na Xu, Zhifeng Liu, Shuo Tian, Dekai Wen, Wanjiang Zheng, De-ming Wang

引用次数: 0

Fabrication of Al2O3-Nb2O5-LiF-ZrO2 FGMs by SPS method: Microstructural evaluation, dynamic and sintering behaviour SPS法制备al2o3 - nb2o5 - liff - zro2 fgm:显微组织评价、动力学和烧结性能

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2022-01-01 DOI: 10.2298/pac2203251j

Jesus de, S. Da, M. Ribeiro, S. Da, V. Arantes, A. Gomes

{"title":"Fabrication of Al2O3-Nb2O5-LiF-ZrO2 FGMs by SPS method: Microstructural evaluation, dynamic and sintering behaviour","authors":"Jesus de, S. Da, M. Ribeiro, S. Da, V. Arantes, A. Gomes","doi":"10.2298/pac2203251j","DOIUrl":"https://doi.org/10.2298/pac2203251j","url":null,"abstract":"For the first time, alumina functionally graded materials (FGMs) with additions of niobium oxide, lithium fluoride and zirconia were produced by spark plasma sintering (SPS) and their sintering behaviour and dynamic properties were studied aiming to evaluate possibility of their use as ballistic shielding. Six groups of alumina samples with different layer compositions were produced by SPS at 1400 ?C/5min. The samples were characterized by dilatometry, scanning electron microscopy (SEM) and Hopkinson split bar method. The composition with the zirconia addition exhibited lower shrinkage rates at higher temperatures than the groups without zirconia, which promoted small sample shrinkage, resulting in lower density and higher porosity. The dynamic test showed that the alumina FGMs with layer containing LiF had the highest strain and strain rate values, exhibiting that the presence of continuous gradients in the composition positively affects the ceramic properties. Densification, layer change and cracks propagating through the material layers were also analysed by SEM analyses.","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":"68581394","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

High-Density Ceramics Obtained By Andesite Basalt Sintering 安山岩玄武岩烧结制备高密度陶瓷

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-08-25 DOI: 10.21203/rs.3.rs-827727/v1

V. Pavkov, G. Bakić, Vesna Maksimovic, I. Cvijović-Alagić, Marija Prekajski Đorđević, D. Bučevac, B. Matović

{"title":"High-Density Ceramics Obtained By Andesite Basalt Sintering","authors":"V. Pavkov, G. Bakić, Vesna Maksimovic, I. Cvijović-Alagić, Marija Prekajski Đorđević, D. Bučevac, B. Matović","doi":"10.21203/rs.3.rs-827727/v1","DOIUrl":"https://doi.org/10.21203/rs.3.rs-827727/v1","url":null,"abstract":"\u0000 Modern industrial requirements include not only the usage of constructive materials with good mechanical properties but also materials obtained through environmentally friendly and low-cost processing procedures. Basalt, as a low-cost raw material, is regarded as a good candidate for industrial constructive parts production. In the present study, andesite basalt originated from the deposit site \"Donje Jarinje\", Serbia, was examined as a potential raw material for high-density ceramics production. The production of high-density ceramics included dry milling, homogenization, cold isostatic pressing, and sintering in the air. To determine the optimal processing parameters the sintering was conducted at 1040, 1050, 1060, 1070, and 1080 °C, and afterward the sintering duration was varied from 30 to 240 min at the optimal sintering temperature of 1060 °C. Characterization of the starting and sintered materials included the estimation of particle size distribution, density, hardness, and fracture toughness complemented with X-ray diffraction, light optical microscopy, scanning electron microscopy, and energy dispersive spectroscopy analysis. Phase transformations did not occur during processing in the investigated temperature range from 1040 to 1080 °C. The obtained research results showed that 99.5% of relative density and the highest hardness and fracture toughness values of 6.7 GPa and 2.2 MPaÖm, respectively, were achieved for the andesite basalt sintered at 1060 °C for 60 min in the air. The results of the presented study confirmed that the sintered andesite basalt can be used as a high-density ceramic material for various industrial applications since this environmentally friendly material shows satisfactory mechanical properties.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41337846","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

Phase equilibria in the La2O3-Y2O3-Gd2O3 system at 1500°C La2O3-Y2O3-Gd2O3体系在1500°C下的相平衡

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-06-12 DOI: 10.1016/J.JEURCERAMSOC.2021.06.017

O. Chudinovych, O. Andrievskaya, J. D. Bogatyryova, V. V. Kovylyaev, O. Bykov

引用次数: 3

Doping effects in (Ba0.85Ca0.15)(Hf0.1Ti0.9)O3 lead-free piezoelectric ceramics prepared via powder injection moulding using simple binder 简单粘结剂粉末注射法制备(Ba0.85Ca0.15)(Hf0.1Ti0.9)O3无铅压电陶瓷的掺杂效应

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-01-01 DOI: 10.2298/PAC2101047W

Can Wang, B. Fang, Shuai Zhang, Xiaolong Lu, Jianning Ding

{"title":"Doping effects in (Ba0.85Ca0.15)(Hf0.1Ti0.9)O3 lead-free piezoelectric ceramics prepared via powder injection moulding using simple binder","authors":"Can Wang, B. Fang, Shuai Zhang, Xiaolong Lu, Jianning Ding","doi":"10.2298/PAC2101047W","DOIUrl":"https://doi.org/10.2298/PAC2101047W","url":null,"abstract":"To improve densification of the (Ba0.85Ca0.15)(Hf0.1Ti0.9)O3 (BCHT) ceramics prepared via powder injection moulding, MnO2 and Li2CO3 were used as sintering aids. The BCHT ceramics doped with different Mn- and Li-amount prepared by powder injection moulding in which paraffin was used as injection binder, have rather pure perovskite structure with complicated polymorphic ferroelectric phase coexistence. Polyhedral grains combined with nearly round shape grains with increased relative density and larger gains size were obtained at appropriate doping amount, related to the formation of liquid phase during sintering and increased mobility of ions due to the generation of point defects caused by heterovalent cations doping. TheMn- and Li-doped BCHT ceramics are displacement driven ferroelectrics with apparent diffused transition characteristic at different extent, relating to the morphotropic phase boundary composition and the variation of point defects induced by doping. Comparable or surpassing electrical performance was acquired, especially the dielectric breakdown strength was increased due to the improved sinterability. With appropriate doping amount, piezoelectricity larger than 300 pC/N can be obtained in the Mn- and Li-doped BCHT ceramics poled under low electric field.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68578406","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

Nb2O5 nanoparticles obtained by microwave assisted combustion synthesis under different conditions 不同条件下微波辅助燃烧合成Nb2O5纳米颗粒

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-01-01 DOI: 10.2298/pac2102128l

Thaís Luiz Marcial, F. Nakagomi, Reny Renzetti Angela, Guilherme Siqueira Oliveira

{"title":"Nb2O5 nanoparticles obtained by microwave assisted combustion synthesis under different conditions","authors":"Thaís Luiz Marcial, F. Nakagomi, Reny Renzetti Angela, Guilherme Siqueira Oliveira","doi":"10.2298/pac2102128l","DOIUrl":"https://doi.org/10.2298/pac2102128l","url":null,"abstract":"The microwave assisted combustion synthesis (MACS) as a new, quick and low cost synthesis method was used for preparation of niobium pentoxide (Nb2O5) powders. The present paper investigated the effect of reactant concentrations (ammonium niobium oxalate, urea and ammonium nitrate) on the characteristics of Nb2O5 nanoparticles. Three samples were synthesized with stoichiometric ratio between the fuel and oxidant (C1), excess of oxidant (C2) and excess of fuel (C3). In all samples, Nb2O5 crystalline nanoparticles with irregular morphology were detected. The synthesis of nanoparticles with smaller diameter in the C2 and C3 samples was confirmed by greater values of band gap energy measured through UV-Visible diffuse reflectance spectroscopy (indicating quantum confinement) and by the Rietveld refinement of X-ray diffraction patterns. The results showed that the amounts of oxidant and fuel can change synthesis temperature, influencing the final characteristics of the particles, such as size and existent phases. In these cases the excess of oxidant and fuel in the C2 and C3 samples, respectively, decreases the average synthesis temperature and decelerates the particle growth and the formation of the monoclinic phase.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68578765","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

Mechanical properties of phase-pure bulk Ta4AlC3 prepared by spark plasma sintering and subsequent heat treatment 火花等离子烧结及热处理制备的相纯体Ta4AlC3的力学性能

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-01-01 DOI: 10.2298/pac2103211y

G. Ying, Cong Hu, Lu Liu, Cheng Sun, Dong Wen, Jianfeng Zhang, Yongting Zheng, Minghui Wang, Chen Zhang, Xiang Wang, Cheng Wang

{"title":"Mechanical properties of phase-pure bulk Ta4AlC3 prepared by spark plasma sintering and subsequent heat treatment","authors":"G. Ying, Cong Hu, Lu Liu, Cheng Sun, Dong Wen, Jianfeng Zhang, Yongting Zheng, Minghui Wang, Chen Zhang, Xiang Wang, Cheng Wang","doi":"10.2298/pac2103211y","DOIUrl":"https://doi.org/10.2298/pac2103211y","url":null,"abstract":"High-purity and bulk Ta4AlC3 ceramics were successfully fabricated by spark plasma sintering (SPS) and subsequent heat treatment, using the raw materials including TaC and Ta2AlC powders. These raw materials were first synthesized by self-propagation high temperature synthesis from elements tantalum, aluminium and carbon black powders, followed by pressure-less sintering. The as-fabricated bulk Ta4AlC3 was relatively stable when subjected to heat treatment at elevated temperature of 1500?C. Moreover, prolonging the heat treatment time resulted in bigger grain sizes and higher densities of the Ta4AlC3. The flexural strength and the fracture toughness of the Ta4AlC3 fabricated by SPS were found to be 411MPa and 7.11MPa?m1/2, respectively. After the heat treatment at 1500?C for 8 h, the flexural strength and the fracture toughness of the Ta4AlC3 could reach 709MPa and 9.23MPa?m1/2, respectively. The special structural characteristics of the ternary ceramics and the increase of density after the heat treatment are the main reasons for the variation in mechanical properties of ternary ceramics.","PeriodicalId":20596,"journal":{"name":"Processing and Application of Ceramics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68579058","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: 5

Effect of particle size of Y2O3-Al2O3 additives on microstructure and mechanical properties of Si3N4 ceramic balls for bearing applications Y2O3-Al2O3添加剂粒径对轴承用Si3N4陶瓷球组织和力学性能的影响

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-01-01 DOI: 10.2298/pac2103297z

Jing Zhang, Wenxue Wang, F. Sun, Weiru Zhang, Boheng Li, Ming-shuai Zhang

引用次数: 1

Microstructure evolution, grain growth kinetics and mechanical properties of Ca2MgSi2O7 bioceramics sintered at various temperatures 不同温度下烧结Ca2MgSi2O7生物陶瓷的显微组织演变、晶粒生长动力学和力学性能

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-01-01 DOI: 10.2298/pac2104357m

H. Mohammadi, Y. B. Baba Ismail, K. Shariff, A. M. Mohd Noor

引用次数: 0

Effects of sintering temperature on structure and electrical properties of (Na0.48k0.473Li0.04Sr0.007)(Nb0.883Ta0.05Sb0.06Ti0.007)O3 piezoelectric ceramics 烧结温度对(Na0.48k0.473Li0.04Sr0.007)(Nb0.883Ta0.05Sb0.06Ti0.007)O3压电陶瓷结构和电性能的影响

IF 1.1 4区材料科学

Processing and Application of Ceramics Pub Date : 2021-01-01 DOI: 10.2298/PAC2101079H

Cheng‐Shong Hong, Yingfang Hong

引用次数: 1