Open Ceramics最新文献_第10页

Electric field assisted spark plasma sintering of ABO3 perovskites: Crystal structure, dielectric behavior and future challenges 电场辅助火花等离子烧结 ABO3 包晶：晶体结构、介电行为和未来挑战

Open Ceramics Pub Date : 2024-05-15 DOI: 10.1016/j.oceram.2024.100608

Subramani Supriya

{"title":"Electric field assisted spark plasma sintering of ABO3 perovskites: Crystal structure, dielectric behavior and future challenges","authors":"Subramani Supriya","doi":"10.1016/j.oceram.2024.100608","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100608","url":null,"abstract":"<div>Plenty of traditional and novel sintering techniques have been utilized to enhance the performance of perovskite materials. Among several sintering methods, electric field-assisted spark plasma sintering (SPS) is a modern category and has been effective for the excellent functionalities of perovskite compounds. The state-of-the-art SPS systems, perovskite materials development, and corresponding design are focused. This article will highlight the parameters of this technique, the advanced procedure of sintering, and their respective effects on the densification and dielectric performance of ABO3 perovskite materials. No such work has been reported to relate the crystalline nature of the various functional perovskites with the spark plasma sintering procedures. This review illustrates a good compilation of recently reported few perovskite materials processed by spark plasma sintering and relationships between thermal effects, density, and dielectric performance. The enhanced density, high dielectric permittivity, and low dielectric loss were achieved due to SPS.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100608"},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000725/pdfft?md5=3c210667752eb32604ab014058347b1e&pid=1-s2.0-S2666539524000725-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141068869","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

High performance double layer hydrophobic antireflective coatings on glass prepared by sol–gel method 用溶胶-凝胶法制备玻璃上的高性能双层疏水性防反射涂层

Open Ceramics Pub Date : 2024-05-14 DOI: 10.1016/j.oceram.2024.100607

A.H. Haritha , K. Faturíková , A. Duran , D. Galusek , Y. Castro , J.J. Velázquez

{"title":"High performance double layer hydrophobic antireflective coatings on glass prepared by sol–gel method","authors":"A.H. Haritha , K. Faturíková , A. Duran , D. Galusek , Y. Castro , J.J. Velázquez","doi":"10.1016/j.oceram.2024.100607","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100607","url":null,"abstract":"<div>A double layer coating was designed and fabricated on glass surfaces by sol-gel method using a silica-titania (SiO2–TiO2) thin film as the bottom layer and an inorganic-organic (triethoxy(octyl)silane (OTES) modified SiO2) upper layer. SiO2 and TiO2 sols were prepared using tetraethyl orthosilicate (TEOS) and titanium isopropoxide (TIP) as precursors and nitric acid (HNO3) as catalyst. The refractive index of the SiO2–TiO2 and OTES modified SiO2 layers were 1.79 and 1.45, and their thicknesses were approximately 76.8 nm and 94.2 nm, respectively. The results show an increase of 7% in transmittance respect to the uncoated glass substrate. At the same time, OTES-modified SiO2 top layer significantly improved the hydrophobicity of the system; the water contact angle of film increased from 56° for system without the OTES modified SiO2 layer to 102° for the system with OTES-modified SiO2 top layer.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100607"},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000713/pdfft?md5=f5fca4c935bd830089e85ebe9f87cc8b&pid=1-s2.0-S2666539524000713-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141068830","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

Long-term oxidation of Ti3Al0.8Sn0.2C2 in air at 1200 °C Ti3Al0.8Sn0.2C2 在 1200 °C 空气中的长期氧化作用

Open Ceramics Pub Date : 2024-05-08 DOI: 10.1016/j.oceram.2024.100605

Hang Yin, Xiaodong He, Kebin Qin, Guangping Song, Yongting Zheng, Yuelei Bai

{"title":"Long-term oxidation of Ti3Al0.8Sn0.2C2 in air at 1200 °C","authors":"Hang Yin, Xiaodong He, Kebin Qin, Guangping Song, Yongting Zheng, Yuelei Bai","doi":"10.1016/j.oceram.2024.100605","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100605","url":null,"abstract":"<div>The addition of Sn into the raw materials is currently one of the most widely used methods to improve the purity and mechanical properties of Ti3AlC2. It follows in this work to investigate the oxidation behavior of the resulting Ti3Al0.8Sn0.2C2 at 1200 °C with the oxidation time up to 500 h. The oxidation kinetics shows that its oxidation resistance is much worse than that of common MAX phases including Ti3AlC2, Ti2AlC, and Cr2AlC. The oxide layer mainly consists of TiO2 and Al2O3, with only a small amount of SnO2 at the beginning of the oxidation stage. Cracks induced by the internal thermal stress penetrate through the entire oxide layer after only 1 h, which is an important reason for the rapid oxidation of the internal substrate layer. This work is expected to provide some inspiration and reference for Ti3Al0.8Sn0.2C2 used as the potential high-temperature structural material.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100605"},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000695/pdfft?md5=51def6be13b7b1bac5c4f60dce2f94e9&pid=1-s2.0-S2666539524000695-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140905625","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

Multicriteria analysis of the components of ecological paving stones made from plastic and glass waste, and granular reinforcements 用塑料和玻璃废料以及颗粒加固材料制成的生态铺路石成分的多标准分析

Open Ceramics Pub Date : 2024-05-08 DOI: 10.1016/j.oceram.2024.100604

Etienne Malbila , Anicet Georges Lienou Koungwe , David Y.K. Toguyeni

{"title":"Multicriteria analysis of the components of ecological paving stones made from plastic and glass waste, and granular reinforcements","authors":"Etienne Malbila , Anicet Georges Lienou Koungwe , David Y.K. Toguyeni","doi":"10.1016/j.oceram.2024.100604","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100604","url":null,"abstract":"<div>The use of plastic waste as a resource in construction applications is an opportunity for environmental protection, conservation of natural resources and reduction of pollution. Unfortunately, they don't always withstand the stresses to which they are subjected, leading to subsidence and collapsing. An analysis of the causes using the Pareto curve shows that 74.47 % of the causes of this collapse are due to poorly formulated mixes and poor choice of raw materials for the composite. The compressive test carried out on the first sample of pavers studied showed a maximum compressive strength value of 4.6 MPa, which is below the standard requirements. As a result, the pavers were considered unsuitable for use on a T5 road. Through the use of the SUPERDECISION software, we were able to identify two favourable constituent materials - glass/glass waste and gravel - for the production of composite paving stones. By adding low-density plastic waste, collected, cleaned and crushed in the form of aggregates, we obtain a compressive strength of 7 MPa with gravel and 8 MPa with glass waste. These values are below the recommendations of the NF EN 1339 standard (Rc ≥ 20 MPa) for T5 traffic. The best composition for ecological paving is therefore (PET/PP/PEBD) + sand + glass (50/12.5/37.5). Analyzing these results shows that the raw materials used for ecological paving should be adapted to the loads.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100604"},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000683/pdfft?md5=c3940b40b91093a43eef026c103e3a80&pid=1-s2.0-S2666539524000683-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140905626","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

Photocatalytic degradation of paracetamol on immobilized TiO2 in a low-tech reactor by solar light for water treatment 在低技术含量的反应器中，利用太阳光对固定化 TiO2 上的扑热息痛进行光催化降解，用于水处理

Open Ceramics Pub Date : 2024-05-06 DOI: 10.1016/j.oceram.2024.100599

Lukas Dufner , Lluc Aresté-Saló , Moisès Graells , Montserrat Pérez-Moya , Frank Kern , Wolfgang Rheinheimer

{"title":"Photocatalytic degradation of paracetamol on immobilized TiO2 in a low-tech reactor by solar light for water treatment","authors":"Lukas Dufner , Lluc Aresté-Saló , Moisès Graells , Montserrat Pérez-Moya , Frank Kern , Wolfgang Rheinheimer","doi":"10.1016/j.oceram.2024.100599","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100599","url":null,"abstract":"<div>Photocatalytic water treatment is an appealing concept to mineralize organic contaminants in contaminated water. In this study, the UV-resistant drug paracetamol (PCT) in aqueous solution is degraded by using a solar irradiated loop-reactor equipped with a TiO2 (P25) photocatalyst. The catalyst powder was dispersed in a geopolymer surface coating applied to aluminum-U-profiles connected by filament-printed polymer elements. Different assays with variations in initial PCT concentration were performed under natural solar radiation to determine the degradation kinetics of the PCT and correlate it to applied solar radiation energy density. Depending on experimental conditions, degradation efficiencies of 37.0–75.1 % were achieved within 3 h. Control samples without catalyst show no degradation. No degradation of the catalyst activity was observed within 42 h of operation time. The study shows the feasibility of this simple and scalable reactor design and coating technology for water purification under off-grid conditions provided sufficient solar radiation is available.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100599"},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000634/pdfft?md5=39d1143bbe400a56cd0dbb9a77ca64ac&pid=1-s2.0-S2666539524000634-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140901866","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

Advancements in DLP 3D printing: High strength alumina toughened zirconia ceramics for biomedical applications DLP 3D 打印技术的进步：用于生物医学应用的高强度氧化铝增韧氧化锆陶瓷

Open Ceramics Pub Date : 2024-05-06 DOI: 10.1016/j.oceram.2024.100601

Tamanna Thakur, Maria Carretta, Dmitrii Komissarenko, Gurdial Blugan

{"title":"Advancements in DLP 3D printing: High strength alumina toughened zirconia ceramics for biomedical applications","authors":"Tamanna Thakur, Maria Carretta, Dmitrii Komissarenko, Gurdial Blugan","doi":"10.1016/j.oceram.2024.100601","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100601","url":null,"abstract":"<div>Digital Light Processing (DLP) enables intricate ceramic part production from photosensitive ceramic slurry. While ZrO2 and Al2O3 are commonly studied, their composites are underexplored despite diverse applications. This study investigates fabricating high-strength, fully dense alumina-toughened zirconia (ATZ) parts using a low-cost desktop DLP printer designed for polymer printing. Various ATZ-based ceramic slurries (30, 35, 42.5 vol%) with different binders and dispersants were prepared and evaluated for curing and rheological properties. Promising formulations underwent debinding and sintering, resulting in homogenous microstructures with a well-distributed blend of the two phases. For the doped samples, SEM analysis revealed a good distribution of dopants and elongated dopant grains infused at higher temperatures. The 35 vol% ATZ exhibited exceptional average flexural strength of 1321 MPa, surpassing previous DLP-fabricated composites. This suggests no need for increased solid loading content. The findings demonstrate the potential of DLP in producing high-performance ceramic parts with tailored properties.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100601"},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000658/pdfft?md5=77c2ba5d4c84cdcaadccfbfe53f9f3f0&pid=1-s2.0-S2666539524000658-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140878537","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

Macroporous polymer-derived ceramics produced by standard and additive manufacturing methods: How the shaping technique can affect their high temperature thermal behavior 用标准和增材制造方法生产的大孔聚合物陶瓷：成型技术如何影响其高温热行为

Open Ceramics Pub Date : 2024-05-04 DOI: 10.1016/j.oceram.2024.100603

Andrea Zambotti , Apoorv Kulkarni , Tugce Semerci , Cekdar Vakifahmetoglu , Marco Pelanconi , Samuele Bottacin , Riccardo Balzarotti , Alberto Ortona , Gian Domenico Sorarù

{"title":"Macroporous polymer-derived ceramics produced by standard and additive manufacturing methods: How the shaping technique can affect their high temperature thermal behavior","authors":"Andrea Zambotti , Apoorv Kulkarni , Tugce Semerci , Cekdar Vakifahmetoglu , Marco Pelanconi , Samuele Bottacin , Riccardo Balzarotti , Alberto Ortona , Gian Domenico Sorarù","doi":"10.1016/j.oceram.2024.100603","DOIUrl":"10.1016/j.oceram.2024.100603","url":null,"abstract":"<div>This work proposes the processing of porous ceramic lattices via three polymer-derived ceramic routes, namely powder bed fusion and infiltration, fused filament fabrication and replica, and a direct replica of a foamed polymer. A common feature in the processing of these lattices is the use of the same polysilazane as the preceramic source for the Si-C-N-O network that builds up during ceramization.We adopted rotated cube, honeycomb and randomized cellular geometries as a matter of comparison for thermal exchange when an air flow is forced through the structures up to 1050 °C. The three procedural pathways are discussed in their limitations regarding geometry, polymer-to-ceramic conversion, high-temperature heat exchange performance and durability. In this regard, while rotated cube geometry results in the best thermal exchange and highest pressure drop, we show a correlation between chemical composition and high temperature oxidation of the Si-C-N-O network, possibly attributed to the selection of the processing routes.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100603"},"PeriodicalIF":0.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000671/pdfft?md5=9586c532d3500de24a3aa5d1d1707976&pid=1-s2.0-S2666539524000671-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141042808","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

Ca/P in situ introduction for enhancing coating biocompatibility via plasma electrolytic oxidation in low-temperature molten salt 在低温熔盐中通过等离子电解氧化原位引入 Ca/P 以增强涂层的生物相容性

Open Ceramics Pub Date : 2024-05-03 DOI: 10.1016/j.oceram.2024.100602

Yuliy Yuferov, Konstantin Borodianskiy

{"title":"Ca/P in situ introduction for enhancing coating biocompatibility via plasma electrolytic oxidation in low-temperature molten salt","authors":"Yuliy Yuferov, Konstantin Borodianskiy","doi":"10.1016/j.oceram.2024.100602","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100602","url":null,"abstract":"<div>Plasma electrolytic oxidation (PEO) is one of the most promising methods for synthesizing ceramic coatings on metallic substrates. Recently, PEO in molten salt electrolytes was found to be advantageous due to overcoming system heating and the formation of contaminants. However, the PEO in molten salt was conducted at a high temperature (Tm∼220 °C), limiting the introduction of different components such as Ca and P. This study realizes the employment of a low-temperature electrolyte based on a ternary eutectic system of Ca(NO3)2–NaNO3–KNO3 (Tm∼130 °C) jointly with the in situ introduction of Ca/P in the form of ammonium dihydrogen phosphate (ADP). The surface morphology, phase and chemical composition, wettability, and anti-corrosion performance were examined. The results indicate improved surface performance with the addition of 1 wt% ADP to the electrolyte. This surface preferably comprises the anatase phase of TiO2 and exhibits enhanced biocompatibility and corrosion resistance in a biological environment.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100602"},"PeriodicalIF":0.0,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266653952400066X/pdfft?md5=a09d62727a2b04ae2f4ef951b1821ed2&pid=1-s2.0-S266653952400066X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140822776","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

Structural, optical, and morphological study of iron-nickel co-doped calcium hydroxide nanoparticles 铁镍共掺氢氧化钙纳米粒子的结构、光学和形态研究

Open Ceramics Pub Date : 2024-05-03 DOI: 10.1016/j.oceram.2024.100600

Akash , Pushpendra Kumar , Rahul Singhal , Ashok Kumar Sharma , Anoop Kumar Mukhopadhyay

引用次数: 0

Ceramic-metal pipes with NiAl2O4 and TiAl2O5 spinel phases with different metallic phase content - Analysis of properties, and microstructure, taking into account LCA 具有不同金属相含量的 NiAl2O4 和 TiAl2O5 尖晶石相的陶瓷-金属管道 - 性能和微观结构分析，同时考虑到 LCA

Open Ceramics Pub Date : 2024-04-26 DOI: 10.1016/j.oceram.2024.100597

Justyna Zygmuntowicz , Paulina Piotrkiewicz , Marcin Wachowski , Ireneusz Szachogłuchowicz , Radosław Żurowski , Paweł Falkowski , Karolina Korycka , Justyna Tomaszewska-Krygicz

{"title":"Ceramic-metal pipes with NiAl2O4 and TiAl2O5 spinel phases with different metallic phase content - Analysis of properties, and microstructure, taking into account LCA","authors":"Justyna Zygmuntowicz , Paulina Piotrkiewicz , Marcin Wachowski , Ireneusz Szachogłuchowicz , Radosław Żurowski , Paweł Falkowski , Karolina Korycka , Justyna Tomaszewska-Krygicz","doi":"10.1016/j.oceram.2024.100597","DOIUrl":"https://doi.org/10.1016/j.oceram.2024.100597","url":null,"abstract":"<div>The article describes the formation of samples into pipes with NiAl2O4 and TiAl2O5 spinel phases with different metallic phase content. The centrifugal slip casting method was used to form the composites. All suspensions used were shear thinning and were characterized by slight thixotropy. The analysis of the phase composition and chemical composition showed the presence of Al2O3, TiAl2O5 and NiAl2O4 in the produced samples. The produced materials were characterized by brittle fracture behaviour. The obtained life cycle assessment results clearly showed that as the content of the metallic phase increases, the environmental footprint of sinters in the A1 phase increases, which is a direct consequence of the increased use of raw materials.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"18 ","pages":"Article 100597"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524000610/pdfft?md5=93f6cb6a584ea8ce51ca1bb696ef0089&pid=1-s2.0-S2666539524000610-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140807080","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