Open Ceramics最新文献_第3页

Lead-free (Ba,Sr)(Sn,Ti)O3 multilayer ceramic components for electrocaloric application 无铅（Ba,Sr）（Sn,Ti）O3多层陶瓷元件的电热应用

IF 2.9

Open Ceramics Pub Date : 2025-07-23 DOI: 10.1016/j.oceram.2025.100829

Christian Molin, Zhenglyu Li, Sylvia E. Gebhardt

{"title":"Lead-free (Ba,Sr)(Sn,Ti)O3 multilayer ceramic components for electrocaloric application","authors":"Christian Molin, Zhenglyu Li, Sylvia E. Gebhardt","doi":"10.1016/j.oceram.2025.100829","DOIUrl":"10.1016/j.oceram.2025.100829","url":null,"abstract":"<div><div>In this paper, we report on multilayer ceramic components based on <span><math><mrow><mi>B</mi><msub><mi>a</mi><mrow><mn>0.82</mn></mrow></msub><mi>S</mi><msub><mi>r</mi><mrow><mn>0.18</mn></mrow></msub><mi>S</mi><msub><mi>n</mi><mrow><mn>0.065</mn></mrow></msub><mi>T</mi><msub><mi>i</mi><mrow><mn>0.935</mn></mrow></msub><msub><mi>O</mi><mn>3</mn></msub></mrow></math></span> (BSSnT) with <span><math><mtext>MgO</mtext></math></span> addition or <span><math><mtext>Ca</mtext></math></span> modification for electrocaloric (EC) cooling applications. The influence of sintering parameters on grain size, dielectric and EC properties are investigated. In components with <span><math><mtext>MgO</mtext></math></span> addition we could increase grain size from 0.4 µm to 4.6 µm by adapting sintering parameters. With increasing grain size dielectric strength is reduced, thus limiting EC properties. In BSSnT components modified with <span><math><mtext>Ca</mtext></math></span>, grain size was increased from 1.7 µm to 6.6 µm, resulting in an increase of EC temperature change from 0.76 K to 0.94 K under an electric field change of 14 V µm<sup>−1</sup>. Simultaneously, dielectric strength decreases from 31.6 V µm<sup>−1</sup> to 21.5 V µm<sup>−1</sup>. Therefore, the optimal grain size represents a compromise between a moderate EC effect and a moderate dielectric strength, since both properties show an opposite dependence on grain size.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"23 ","pages":"Article 100829"},"PeriodicalIF":2.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biogenic synthesis of selenium nanoparticles from Valeriana officinalis extract: A dual approach for environmental remediation and cancer therapy 缬草提取物生物合成纳米硒：环境修复和癌症治疗的双重途径

IF 2.8

Open Ceramics Pub Date : 2025-07-20 DOI: 10.1016/j.oceram.2025.100828

Fatemeh Nazarzadeh , Saied Navabpour , Zahra Sabouri , Majid Darroudi

引用次数: 0

Optimization of Na2Ti3O7 nanowire synthesis conditions for reliable BaTiO3 nanowires production 优化Na2Ti3O7纳米线合成条件，实现BaTiO3纳米线的可靠生产

IF 2.8

Open Ceramics Pub Date : 2025-07-19 DOI: 10.1016/j.oceram.2025.100827

Sakhavat Dadashov , Ender Suvaci

引用次数: 0

Study of the effect of sintering temperature on the microstructure and mechanical properties of stabilized and partially stabilized zirconium dioxide 烧结温度对稳定和部分稳定二氧化锆显微组织和力学性能影响的研究

IF 2.9

Open Ceramics Pub Date : 2025-07-16 DOI: 10.1016/j.oceram.2025.100826

D.B. Borgekov , R.I. Shakirzyanov , M.E. Kaliekperov , Yu.A. Garanin , S.A. Maznykh , D.I. Shlimas

{"title":"Study of the effect of sintering temperature on the microstructure and mechanical properties of stabilized and partially stabilized zirconium dioxide","authors":"D.B. Borgekov , R.I. Shakirzyanov , M.E. Kaliekperov , Yu.A. Garanin , S.A. Maznykh , D.I. Shlimas","doi":"10.1016/j.oceram.2025.100826","DOIUrl":"10.1016/j.oceram.2025.100826","url":null,"abstract":"<div><div>Despite broad utilization of zirconia ceramics in science and industry, significant matters about the structure-property relations in sintered parts are relevant. In this work, to control the microstructure of doped zirconium oxide ceramics with Y, Ca, Mg, Ce dopants sintering at temperatures in the range of 1300 - 1700 °C was carried out. The structure-property relation was studied using XRD, SEM, Vickers and measuring the biaxial flexural strength methods. With an increase in the sintering temperature, significant changes in the microstructure are observed, associated with exaggerated grain growth and the formation of secondary phases. Microhardness vs sintering temperature dependencies show that with increasing temperature, there is an increase in the HV1 values for the ZrO<sub>2<img></sub>CaCO<sub>3</sub>, ZrO<sub>2</sub>−MgO, ZrO2-CeO<sub>2</sub> compositions, which is associated with an increase in the density of ceramics. Optimum sintering temperatures for ZrO2-Y<sub>2</sub>O<sub>3</sub>, ZrO<sub>2</sub>−MgO compositions were found, for which the flexural strengths have the highest values.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"23 ","pages":"Article 100826"},"PeriodicalIF":2.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct ink writing of lightweight 3D structures from alkali-activated waste fiberglass and glass microsphere fillers 用碱活化废玻璃纤维和玻璃微球填料直接墨水书写轻质3D结构

IF 2.9

Open Ceramics Pub Date : 2025-07-15 DOI: 10.1016/j.oceram.2025.100825

Abel W. Ourgessa , Ahmed Gamal Abd-Elsatar , Mokhtar Mahmoud , Hamada Elsayed , Jozef Kraxner , Dusan Galusek , Enrico Bernardo

{"title":"Direct ink writing of lightweight 3D structures from alkali-activated waste fiberglass and glass microsphere fillers","authors":"Abel W. Ourgessa , Ahmed Gamal Abd-Elsatar , Mokhtar Mahmoud , Hamada Elsayed , Jozef Kraxner , Dusan Galusek , Enrico Bernardo","doi":"10.1016/j.oceram.2025.100825","DOIUrl":"10.1016/j.oceram.2025.100825","url":null,"abstract":"<div><div>This study explores the upcycling of glass waste into sustainable materials using additive manufacturing. The direct ink writing technique was used to 3D print structures from waste fiberglass activated with 3 M or 5 M NaOH. All inks showed shear-thinning behavior after 3 h of mixing, ensuring good printability. Printed structure with 5 M NaOH achieved higher compressive strength (5.2 MPa). Incorporation of glass microsphere fillers, synthesized from waste soda-lime glass via flame synthesis, improved print quality and reduced density. The printed structures displayed good layer adhesion and defect-free morphology. Thermal treatment at 800 °C produced porous glass ceramics with a foaming effect. Low molarity and microsphere incorporation minimized foaming while preserving the 3D structure. Final products had porosities of 88–93 %, bulk densities of 0.17–0.3 g/cm³, and compressive strengths of 1.6–3.2 MPa, demonstrating their potential as lightweight, sustainable building materials.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"23 ","pages":"Article 100825"},"PeriodicalIF":2.9,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface displacements of a PMUT array: Interferometric characterization and mechanical crosstalk evaluation PMUT阵列的表面位移：干涉表征和机械串扰评价

IF 2.9

Open Ceramics Pub Date : 2025-07-06 DOI: 10.1016/j.oceram.2025.100820

S. Udovenko , R. Graham , P. Tipsawat , M. Pineda , S. Trolier-McKinstry

{"title":"Surface displacements of a PMUT array: Interferometric characterization and mechanical crosstalk evaluation","authors":"S. Udovenko , R. Graham , P. Tipsawat , M. Pineda , S. Trolier-McKinstry","doi":"10.1016/j.oceram.2025.100820","DOIUrl":"10.1016/j.oceram.2025.100820","url":null,"abstract":"<div><div>Piezoelectric micromachined ultrasonic transducers (PMUTs) enable substantial electrically induced strains at low voltages. In this work a combination of Laser Doppler Vibrometry (LDV) and Mapping Single Beam Laser Interferometry (SBLI) was used to characterize PMUT displacement shapes at frequencies of 600 kHz and 1 kHz, respectively. Finite element modeling demonstrated excellent agreement with the displacements, once the device geometry was corrected to measured (rather than nominal) dimensions and appropriate boundary conditions were applied. Mapping SBLI was also used to characterize mechanical crosstalk at low frequencies, which is critical for evaluating PMUT performance. It was also demonstrated that driving one element induces bending of the PMUT substrate over dimensions on the 3 mm scale. The analysis of displacement profiles near the edges of released parts of PMUT structure revealed 150 μm transition regions between clamped and released areas. This reduced the active length (where displacement reaches its maximum values) of the PMUT by ∼4%.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"23 ","pages":"Article 100820"},"PeriodicalIF":2.9,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of advances and challenges in alkali-activated materials from dredged sediments 疏浚沉积物碱活性材料研究进展与挑战综述

IF 2.9

Open Ceramics Pub Date : 2025-07-06 DOI: 10.1016/j.oceram.2025.100824

Amine el Mahdi Safhi , Shima Pilehvar , Mahdi Kioumarsi

引用次数: 0

Effect of mineralizer on the synthesis of (Ni, Mn) co-doping CuFe5O8 pigment and its glazing performance 矿化剂对（Ni, Mn）共掺杂CuFe5O8颜料合成及上光性能的影响

IF 2.9

Open Ceramics Pub Date : 2025-07-05 DOI: 10.1016/j.oceram.2025.100822

Guo Feng , Tiantian Liu , Jun Mu , Feng Jiang , Zhiqi Guo , Liangliang Xiao , Qian Wu , Xiaojun Zhang , Jianmin Liu , Jian Liang

{"title":"Effect of mineralizer on the synthesis of (Ni, Mn) co-doping CuFe5O8 pigment and its glazing performance","authors":"Guo Feng , Tiantian Liu , Jun Mu , Feng Jiang , Zhiqi Guo , Liangliang Xiao , Qian Wu , Xiaojun Zhang , Jianmin Liu , Jian Liang","doi":"10.1016/j.oceram.2025.100822","DOIUrl":"10.1016/j.oceram.2025.100822","url":null,"abstract":"<div><div>Novel Co and Cr free, high-temperature (Ni, Mn) co-doping CuFe<sub>5</sub>O<sub>8</sub> black ceramic pigments were synthesized. The effects of mineralizer type and mineralizer amount on the synthesis and coloration of (Ni, Mn) co-doping CuFe<sub>5</sub>O<sub>8</sub> pigments, as well as the effect of glazing calcination temperature on glaze coloration were systematically investigated using testing and characterization methods such as XRD, FE-SEM, TEM, EDS-mapping, HAADF and colorimeter. The results indicate that compared with H<sub>3</sub>BO<sub>3</sub>, NH<sub>4</sub>F, LiF and NaF mineralizers, the pigment with MgO as the mineralizer is relatively better. The optimized mineralizer MgO amount is 6.25 wt.% (mass ratio relative to the pigment). <em>L</em>*, <em>a</em>* and <em>b</em>* values of corresponding optimized pigment are 21.36, 1.10 and -0.24, respectively. The crystal phase of the pigment is CuFe<sub>5</sub>O<sub>8</sub> (73–2314), and no diffraction peak of the heterophase is detected. The crystal size of the pigments is 0.8–1.5 <em>μ</em>m with excellent dispersivity. The glazing temperatures have little effect on the coloration of the pigments when they are used at 1000 °C, 1150 °C and 1300 °C. The results show that the pigment has excellent high temperature resistance and is expected to be widely used in high-temperature glazing coloration.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"23 ","pages":"Article 100822"},"PeriodicalIF":2.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compositional changes to brushite cements to improve mechanical and antibiotic-delivery properties 改变刷石水泥的成分以改善机械和抗生素的输送性能

IF 2.9

Open Ceramics Pub Date : 2025-07-05 DOI: 10.1016/j.oceram.2025.100823

Claudia Morilla Espino , Louise van der Weerd , Lioe-Fee de Geus-Oei , Jeroen JJP van den Beucken

引用次数: 0

Comparative study on the color characteristics of sky-green porcelain in the four kilns of a Ru kiln system from the Northern Song Dynasty 北宋汝窑系统四窑天青瓷色彩特征比较研究

IF 2.9

Open Ceramics Pub Date : 2025-07-03 DOI: 10.1016/j.oceram.2025.100821

Zhen Sang , Shuofei Zan , Le Li , Xiangyang Fu , Zhen Liu , Danni Chen , Xiaojuan Yuan , Pei Shi

{"title":"Comparative study on the color characteristics of sky-green porcelain in the four kilns of a Ru kiln system from the Northern Song Dynasty","authors":"Zhen Sang , Shuofei Zan , Le Li , Xiangyang Fu , Zhen Liu , Danni Chen , Xiaojuan Yuan , Pei Shi","doi":"10.1016/j.oceram.2025.100821","DOIUrl":"10.1016/j.oceram.2025.100821","url":null,"abstract":"<div><div>To comparatively study the coloring mechanism of the celadon glaze of the four kilns in the Ru kiln system (i.e., Qingliangsi, Donggou, Yanhedian, and Duandian), samples obtained from these four kilns were examined. The glazes were analyzed by using chromaticity, XRF, XRD, XPS, and SEM/EDS. The results showed that the Fe<sub>2</sub>O<sub>3</sub> content of the Yanhedian, Donggou, Duandian, and Qingliangsi specimens decreased successively<strong>,</strong> so their brightness successively increased. The presence of small and dense bubbles, more mullite crystals, and Mie scattering produced by the phase-separated structure also increased the brightness of the Qingliangsi glaze, giving it the milkiest texture. The Fe<sup>2+</sup>/Fe<sup>3+</sup> ratio and P<sub>2</sub>O<sub>5</sub> content of the Qingliangsi, Duandian, Donggou, and Yanhedian specimen glazes successively decreased. Therefore, their glaze color changed from greenish-blue to greenish-yellow, and the reducing atmosphere decreased successively. The higher CaO content of the Qingliangsi and Duandian glazes deepened their blue hue.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"23 ","pages":"Article 100821"},"PeriodicalIF":2.9,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0