Open Ceramics最新文献_第4页

Low-cost ceramic membranes prepared from kaolin and quartz via tape casting using different pore formers 以高岭土和石英为原料，采用不同的成孔剂，通过带铸法制备低成本的陶瓷膜

IF 2.9

Open Ceramics Pub Date : 2025-03-11 DOI: 10.1016/j.oceram.2025.100765

Camila Silveira , Jessica Mulinari , Agenor De Noni Junior , Alan Ambrosi , Dachamir Hotza , Marco Di Luccio

{"title":"Low-cost ceramic membranes prepared from kaolin and quartz via tape casting using different pore formers","authors":"Camila Silveira , Jessica Mulinari , Agenor De Noni Junior , Alan Ambrosi , Dachamir Hotza , Marco Di Luccio","doi":"10.1016/j.oceram.2025.100765","DOIUrl":"10.1016/j.oceram.2025.100765","url":null,"abstract":"<div><div>Ceramic membranes offer high thermal, chemical, and mechanical stability, long lifespan, and high hydrophilicity. However, their high cost limits widespread use, highlighting the need for low-cost alternatives. This study evaluated kaolin and quartz for ceramic membranes production via tape casting. The influence of quartz content (10 – 50 vol%), sintering temperature (1300 or 1400 °C), and pore formers (graphite or PMMA) on membrane properties were studied. Without pore formers, open porosity and water permeance were considerably improved just by increasing quartz content. Adding PMMA or graphite more than doubled porosity at lower quartz content, increasing water permeance almost 13- and 22-fold, respectively. Membranes with ∼60 % porosity and water permeances of 1926–2646 L·m<sup>-2</sup>·h<sup>-1</sup>·bar<sup>-1</sup> were obtained at 1300 °C using graphite. This study shows that adjusting slurry composition and sintering temperature enables the production of low-cost kaolinite-based membranes with tailored properties, expanding their applications in separation processes while reducing costs and environmental impact.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"22 ","pages":"Article 100765"},"PeriodicalIF":2.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene-membranes prepared by layer-by-layer deposition of graphene flakes on porous ceramic supports 将石墨烯薄片逐层沉积在多孔陶瓷支架上制备的石墨烯膜

IF 2.9

Open Ceramics Pub Date : 2025-03-11 DOI: 10.1016/j.oceram.2025.100763

Gabriele Schmidl , Marc Pezoldt , Guobin Jia , Andrea Dellith , Adrian Simon , Uwe Ritter , Ingolf Voigt , Jonathan Plentz

{"title":"Graphene-membranes prepared by layer-by-layer deposition of graphene flakes on porous ceramic supports","authors":"Gabriele Schmidl , Marc Pezoldt , Guobin Jia , Andrea Dellith , Adrian Simon , Uwe Ritter , Ingolf Voigt , Jonathan Plentz","doi":"10.1016/j.oceram.2025.100763","DOIUrl":"10.1016/j.oceram.2025.100763","url":null,"abstract":"<div><div>Porous ceramic substrates are an excellent alternative for gas separation in industrial processes at high temperature and pressure conditions. A coating of graphene supports permeances and gas separation based on modified separation pathways determined by the single layer. Graphene is an excellent material for membranes that can be used under aggressive conditions. The double self-assembly (DSA) process developed for this purpose was used to fabricate very thin graphene membranes by layer-by-layer deposition of graphene flakes on flat porous ceramic substrates. The permeances of individual gases such as He, H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub>, CH<sub>4</sub> and SF<sub>6</sub> decrease with the number of graphene layers. This is most pronounced up to a graphene layer number of 8 but strongly depends on the utilized ceramic substrate. Furthermore, for 8x coated membranes the selectivity of H<sub>2</sub>/CO<sub>2</sub> and H<sub>2</sub>/SF<sub>6</sub> increases to 5.12 and 10.28 at a process temperature of 200 °C. The influence of a thermal pre-treatment under N<sub>2</sub> and H<sub>2</sub> from 400 °C up to 800 °C on the permeances is shown and Raman measurements were carried out for qualitative observation of the defect behavior.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"22 ","pages":"Article 100763"},"PeriodicalIF":2.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid synthesis of manganese tetraboride (MnB4) using reactive spark plasma sintering 利用反应火花等离子烧结技术快速合成四硼化锰（MnB4）

IF 2.9

Open Ceramics Pub Date : 2025-03-10 DOI: 10.1016/j.oceram.2025.100764

S.B. Dhuban , Hyoung-Won Son , Takao Mori

引用次数: 0

Corrigendum to “Synthesis and characterization of graphene nanoplatelets-containing fibers by electrospinning” [Open Ceramics, 15 (2023), 100395] “含石墨烯纳米板纤维的静电纺丝合成和表征”[j] .开放陶瓷，15(2023),100395。

IF 2.9

Open Ceramics Pub Date : 2025-03-08 DOI: 10.1016/j.oceram.2025.100760

Enrico Storti , Michal Lojka , Simona Lencová , Jana Hubálková , Ondřej Jankovský , Christos G. Aneziris

引用次数: 0

Stokes and Anti-Stokes emission and biological window III (1.53 µm) luminescence thermometry analysis from Stark sublevels in Er3+, Yb3+ -doped fluorophosphate glasses Er3+， Yb3+掺杂氟磷酸盐玻璃中Stark亚能级的Stokes和Anti-Stokes发射和生物窗III（1.53µm）发光测温分析

IF 2.9

Open Ceramics Pub Date : 2025-03-04 DOI: 10.1016/j.oceram.2025.100762

Gustavo Galleani , Rajesh Dagupati , Bruno Wolfrum , Róbert Klement , Jose J. Velázquez , Dušan Galusek

引用次数: 0

Keep it simple: Fast processing of periodic BCZT structures by combination of VPP and replica technique 保持简单：结合VPP和复制技术快速处理周期BCZT结构

IF 2.9

Open Ceramics Pub Date : 2025-02-27 DOI: 10.1016/j.oceram.2025.100761

Swantje Funk , Edwyn Wolf , Michelle Weichelt , Alexander Martin , Ken-ichi Kakimoto , Tobias Fey

{"title":"Keep it simple: Fast processing of periodic BCZT structures by combination of VPP and replica technique","authors":"Swantje Funk , Edwyn Wolf , Michelle Weichelt , Alexander Martin , Ken-ichi Kakimoto , Tobias Fey","doi":"10.1016/j.oceram.2025.100761","DOIUrl":"10.1016/j.oceram.2025.100761","url":null,"abstract":"<div><div>The replica technique has been widely used and continuously improved over the last decades. Pore size, distribution and strut geometry remain constrained by the polyurethane (PU) template. Periodic lattices are with special interest given to biomaterials and can be made by advanced replica technique, which offers precise control over the porosity of materials by using an adjustable 3D-printed template, the Kelvin cell. They were coated with a sol-gel Barium Calcium Zirconate Titanate (BCZT) based slurry achieving high d<sub>33</sub> values of up to 33 ± 9 pC/N despite a porosity of 54 %. The upscaled approach of sol-gel BCZT synthesis was mandatory, as previous studies were not able to produce sufficient quantities. The findings indicate that the advanced replica technique enables the targeted adjustment of open and interconnected porosity in biomaterials, while BCZT exhibits favorable piezoelectric characteristics even for high porosities, further underscoring its potential in biomedical applications as a replacement/supplement to bioglass.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"22 ","pages":"Article 100761"},"PeriodicalIF":2.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sinter-joining of two different bioceramic materials 两种不同生物陶瓷材料的烧结连接

IF 2.9

Open Ceramics Pub Date : 2025-02-26 DOI: 10.1016/j.oceram.2025.100759

Sarah Nistler , Christoph Hofstetter , Stefan Baudis , Martin Schwentenwein , Jürgen Stampfl

引用次数: 0

Green binder system for taphole clays: A potential for glycerine and phenolic resin 洞口粘土的绿色粘合剂系统：甘油和酚醛树脂的潜力

IF 2.9

Open Ceramics Pub Date : 2025-02-25 DOI: 10.1016/j.oceram.2025.100758

I.J-P. Cameron , A.M. Garbers-Craig

引用次数: 0

Investigation of resin composition and printing parameters on the dimensional accuracy of alumina components fabricated via ceramic vat photopolymerization 树脂组成及印刷参数对陶瓷还原光聚合法制备氧化铝部件尺寸精度的影响

IF 2.9

Open Ceramics Pub Date : 2025-02-23 DOI: 10.1016/j.oceram.2025.100751

Piie Konnunaho, Setareh Zakeri, Erkka J. Frankberg, Erkki Levänen

{"title":"Investigation of resin composition and printing parameters on the dimensional accuracy of alumina components fabricated via ceramic vat photopolymerization","authors":"Piie Konnunaho, Setareh Zakeri, Erkka J. Frankberg, Erkki Levänen","doi":"10.1016/j.oceram.2025.100751","DOIUrl":"10.1016/j.oceram.2025.100751","url":null,"abstract":"<div><div>Dimensional accuracy in ceramic vat photopolymerization is influenced by broadening, where cured regions exceed intended exposure areas due to light scattering in the ceramic resin. This study evaluates how printing parameters (exposure time and peel-off speed) and resin composition (photoinitiator type and concentration, and dye type and concentration) affect the accuracy of negative (e.g., holes) and positive (e.g., pillars) features of varying sizes (0.45 mm). Results showed that feature size influences accuracy, with longer exposure times improving interlayer bonding but reducing resolution. Photocuring behavior aligned with the UV absorption spectra of photoinitiators and dyes. Increasing photoinitiator concentration led to higher lateral light penetration (<span><math><msub><mrow><mi>S</mi></mrow><mrow><mi>w</mi></mrow></msub></math></span>) but lower depth penetration (<span><math><msub><mrow><mi>D</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span>), while increasing dye concentration resulted in reduced <span><math><msub><mrow><mi>S</mi></mrow><mrow><mi>w</mi></mrow></msub></math></span> and <span><math><msub><mrow><mi>D</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span>. The findings in this study enhance the understanding of ceramic VPP, reinforcing its potential for industrial applications that require high dimensional accuracy.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"22 ","pages":"Article 100751"},"PeriodicalIF":2.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Image and numerical analyses for understanding the in vivo dissolution of partially crystalline bioactive glass S53P4 scaffolds 通过图像和数值分析了解部分结晶性生物活性玻璃S53P4支架的体内溶解

IF 2.9

Open Ceramics Pub Date : 2025-02-20 DOI: 10.1016/j.oceram.2025.100757

Laura Aalto-Setälä , Gustav Strömberg , Peter Uppstu , Robert Björkenheim , Jukka Pajarinen , Nina Lindfors , Leena Hupa

{"title":"Image and numerical analyses for understanding the in vivo dissolution of partially crystalline bioactive glass S53P4 scaffolds","authors":"Laura Aalto-Setälä , Gustav Strömberg , Peter Uppstu , Robert Björkenheim , Jukka Pajarinen , Nina Lindfors , Leena Hupa","doi":"10.1016/j.oceram.2025.100757","DOIUrl":"10.1016/j.oceram.2025.100757","url":null,"abstract":"<div><div>This work employs image and numerical analyses of SEM micrographs to understand the fate of partially crystallized S53P4 scaffolds after implantation in rabbit femurs for 2, 4, and 8 weeks. Bioactive glasses commonly used for the regeneration of bone tissue may crystallize during hot-working, which affects their dissolution. The <em>in vivo</em> degradation behavior of the scaffolds was analyzed from cross-sectional SEM images by separating surface reaction layers, unreacted glass, and ingrown bone. The partial crystallization resulted in scaffolds degrading rapidly without decreasing size, thus enabling image analysis to estimate the progress of the <em>in vivo</em> behavior. The analysis enabled numerical estimates for the dissolution of sodium and silicon from the glass scaffolds. After 56 days, 68 % of silicon and 90 % of sodium had dissolved from the original sintered scaffolds. It was estimated that if the degradation continued similarly, all sodium would dissolve within three months and silicon in eight months.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"22 ","pages":"Article 100757"},"PeriodicalIF":2.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0