Journal of the Australian Ceramic Society最新文献

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Correlation between phase, microstructure and electrical properties of KNN-modified BNT-BT lead free ceramics knn改性BNT-BT无铅陶瓷的相、微观结构与电性能的关系
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-23 DOI: 10.1007/s41779-026-01348-7
Yan Mu, Junjun Wang, Bingsen Wang, Yufang Jiao, Jian He, Meng Liu, Che Sun, Shaoyang Yuan, Danqing Liu, Wenlong Yang, Linjing Liu, Fengmin Wu
{"title":"Correlation between phase, microstructure and electrical properties of KNN-modified BNT-BT lead free ceramics","authors":"Yan Mu,&nbsp;Junjun Wang,&nbsp;Bingsen Wang,&nbsp;Yufang Jiao,&nbsp;Jian He,&nbsp;Meng Liu,&nbsp;Che Sun,&nbsp;Shaoyang Yuan,&nbsp;Danqing Liu,&nbsp;Wenlong Yang,&nbsp;Linjing Liu,&nbsp;Fengmin Wu","doi":"10.1007/s41779-026-01348-7","DOIUrl":"10.1007/s41779-026-01348-7","url":null,"abstract":"<div><p>To enhance the piezoelectric performance of the lead-free Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-BaTiO<sub>3</sub> (BNT-BT) system, we introduced K<sub>0.5</sub>Na<sub>0.5</sub>NbO<sub>3</sub> (KNN) via synergistic composition modulation. A series of (0.94-x)BNT-0.06BT-xKNN (x = 0.01–0.04) ceramics were synthesized using a solid-state reaction method. The composition with x = 0.02 exhibited optimal performance, achieving a significantly improved piezoelectric coefficient (<i>d</i>₃₃ = 115 pC/N) and a high depolarization temperature (<i>T</i><sub>d</sub> = 138 °C). Comprehensive structural and electrical characterizations revealed that these enhancements originate from KNN-induced modifications, including the coexistence of rhombohedral and tetragonal phases, refined grain morphology, and optimized domain dynamics. This work demonstrates that KNN modification is an effective strategy for tailoring the functional properties of BNT-BT-based ceramics, positioning the optimized composition as a competitive lead-free piezoelectric candidate for advanced electromechanical applications.</p></div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1641 - 1648"},"PeriodicalIF":2.6,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904031","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
Root-driven gold: characterisations and biological activities of nanoparticles synthesised using medicinal plant extracts 根驱动金:用药用植物提取物合成的纳米颗粒的特性和生物活性
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-16 DOI: 10.1007/s41779-026-01346-9
M. Mahadeva Swamy, K. S. Shruthi, A. S. Sowmyashree, G. K. Prashanth, N. D. Rekha, D. Kathyayani
{"title":"Root-driven gold: characterisations and biological activities of nanoparticles synthesised using medicinal plant extracts","authors":"M. Mahadeva Swamy,&nbsp;K. S. Shruthi,&nbsp;A. S. Sowmyashree,&nbsp;G. K. Prashanth,&nbsp;N. D. Rekha,&nbsp;D. Kathyayani","doi":"10.1007/s41779-026-01346-9","DOIUrl":"10.1007/s41779-026-01346-9","url":null,"abstract":"<div>\u0000 \u0000 <p>Gold nanoparticles (AuNPs) have drawn a lot of interest due to their unique physicochemical characteristics and several biological uses. Glycyrrhiza glabra (licorice root) and Sarpagandha root extract, a well-known medicinal plant with a variety of bioactive chemicals, are used in this study to investigate the green synthesis of AuNPs. The licorice root extract helps to create stable, monodispersed AuNPs by acting as a stabilising and reducing agent. X-ray diffraction (XRD), particle analysis (PA), and UV-visible spectroscopy are used for characterisation. Their potential in vivo angiogenesis and anti-inflammatory study was highlighted by biological evaluations that showed the prospective reduction of capillary. The results indicate that AuNPs derived from licorice and sarpagandha roots have exceptional therapeutic potential and provide a biocompatible and environmentally friendly substitute for biomedical applications.</p>\u0000 </div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1623 - 1631"},"PeriodicalIF":2.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965425","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
Chitosan-derived Schiff base and its application as a template for the synthesis of hydroxyapatite nanorods 壳聚糖基希夫碱及其作为合成羟基磷灰石纳米棒模板的应用
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-13 DOI: 10.1007/s41779-025-01332-7
Anupama Devi Vijayan Kumary, Amit Kumar Jaiswal
{"title":"Chitosan-derived Schiff base and its application as a template for the synthesis of hydroxyapatite nanorods","authors":"Anupama Devi Vijayan Kumary,&nbsp;Amit Kumar Jaiswal","doi":"10.1007/s41779-025-01332-7","DOIUrl":"10.1007/s41779-025-01332-7","url":null,"abstract":"<div>\u0000 \u0000 <p>Hydroxyapatite is a widely explored bio ceramic, but achieving controlled nanorod morphology remains challenging with conventional synthetic routes. This research focuses on synthesizing hydroxyapatite through a novel method using the biopolymers chitosan and cinnamaldehyde for Schiff base template formation. This template guided the mineralization of phosphate and calcium precursors, thus producing well defined hydroxyapatite nanorods with an aspect ratio from 2.5 to 4 as confirmed by SEM analysis. Structural and chemical analysis verified that the synthesized HA is comparable to commercial HA (HA_C). The cytotoxicity of these nanorods using the MTT and live/dead assays on murine fibroblast cells and mesenchymal stem cells showed &gt; 70% viability over 7 days, indicating non toxicity and enhanced proliferation. The osteogenic potential of the hydroxyapatite was confirmed using alkaline phosphatase and ARS staining, where initiation and completion of mineralization was confirmed. Hence, this work introduces a distinctive, template driven approach for synthesizing biologically active HA nanorods, offering a significant improvement over existing commercial hydroxyapatite.</p>\u0000 </div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1437 - 1453"},"PeriodicalIF":2.6,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965276","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
Carbonate apatite derived from Northern region limestone of Malaysia: A preliminary evaluation 马来西亚北部地区灰岩中碳酸盐磷灰石的初步评价
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-12 DOI: 10.1007/s41779-025-01345-2
Yeoh Nian En, Tharani Karuppaya, Elly Munadziroh, Nurazreena Ahmad
{"title":"Carbonate apatite derived from Northern region limestone of Malaysia: A preliminary evaluation","authors":"Yeoh Nian En,&nbsp;Tharani Karuppaya,&nbsp;Elly Munadziroh,&nbsp;Nurazreena Ahmad","doi":"10.1007/s41779-025-01345-2","DOIUrl":"10.1007/s41779-025-01345-2","url":null,"abstract":"<div>\u0000 \u0000 <p>The global rise in bone reconstructive surgeries necessitates effective artificial bone substitutes, with carbonate apatite (CO<sub>3</sub>Ap) being a promising candidate for bone regeneration. However, CO<sub>3</sub>Ap cannot be sintered due to thermal decomposition at high sintering temperatures. An alternative method to synthesis CO<sub>3</sub>Ap is via dissolution-precipitation reaction of precursor such as calcium carbonate (CaCO<sub>3</sub>). This study focuses on the feasibility to synthesis CaCO<sub>3</sub> precursor from natural source material such as limestone. In this study, limestone obtained from the Northern Region of Malaysia were utilized to synthesis CaCO<sub>3</sub>. The limestone was subjected to calcination, dissolution in distilled water and dried to produce calcium hydroxide (Ca(OH)<sub>2</sub>) powder, which was subsequently carbonated at room temperature and 4 °C to produce calcite and vaterite, polymorphs of CaCO<sub>3</sub>, respectively. These were then pressed into pellets and immersed in 1 M sodium hydrogen phosphate (Na<sub>2</sub>HPO<sub>4</sub>) solution at 80 °C for up to 14 days. Characterization using X-ray Diffraction (XRD), Fourier transform infra-red (FTIR), scanning electron microscope (SEM), particle size analyzer and carbon-hydrogen-nitrogen (CHN) analyzer were conducted to examine the formation of CO<sub>3</sub>Ap. FTIR analysis identified the synthesized product as AB-type CO₃Ap. Vaterite precursor treated in 1 M Na<sub>2</sub>HPO<sub>4</sub> transform to CO<sub>3</sub>Ap within 3 days with 13.5 wt% of carbonate content while for calcite precursor, the transformation to CO<sub>3</sub>Ap was within 7 days with 11.8 wt% of carbonate content. This is due to vaterite having higher surface area and solubility when compared to calcite in aqueous solution. These findings suggest the feasibility to obtain high-purity CO<sub>3</sub>Ap by utilizing locally available limestone are feasible.</p>\u0000 </div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1613 - 1622"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-025-01345-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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 nano bioactive glass ceramic S53P4 using the special sol-gel method 采用特殊溶胶-凝胶法快速合成纳米生物活性玻璃陶瓷S53P4
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-12 DOI: 10.1007/s41779-025-01343-4
Le Hong Phuc, Nguyen Quan Hien, Bui Thi Hoa, Hoang Thi Trong Hoa, Bui Xuan Vuong
{"title":"Rapid synthesis of nano bioactive glass ceramic S53P4 using the special sol-gel method","authors":"Le Hong Phuc,&nbsp;Nguyen Quan Hien,&nbsp;Bui Thi Hoa,&nbsp;Hoang Thi Trong Hoa,&nbsp;Bui Xuan Vuong","doi":"10.1007/s41779-025-01343-4","DOIUrl":"10.1007/s41779-025-01343-4","url":null,"abstract":"<div>\u0000 \u0000 <p>A bioactive glass–ceramic with the composition 53SiO₂-20CaO-23Na₂O-4P₂O₅ (wt%) (S53P4) was synthesized using a modified sol–gel route. In this process, Ca(NO₃)₂·4 H₂O, NaNO₃, TEOS, and TEP were hydrolyzed in hot water to form a homogeneous sol, which was subsequently transformed into a gel inside a hydrothermal reactor. The wet gel was then dried by freeze-drying to preserve its porous structure and finally calcined at high temperature to obtain the glass–ceramic material. The synthesized product was characterized by XRD, SEM-EDX, TEM, BET, and ICP-OES analyses. Bioactivity was examined by immersing the powder in simulated body fluid (SBF), while biocompatibility was evaluated using L-929 fibroblast cells. The results show that the obtained glass–ceramic exhibits a nanostructure with an average particle size of 22.86 nm, high porosity, large specific surface area (311.51 m²/g), and significant pore volume (0.791 cm³/g). Upon immersion in SBF, a hydroxyapatite layer formed within 3 days, confirming excellent bioactivity. Cytotoxicity tests demonstrated high biocompatibility, with cell viability exceeding 90% at all extract concentrations and reaching up to 134% at a 25% extract level.</p>\u0000 </div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1587 - 1595"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965453","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
Microwave-assisted green synthesis of graphene derivatives and their composites with zirconium dioxide: structural, optical and electrochemical characterization 石墨烯衍生物及其二氧化锆复合材料的微波辅助绿色合成:结构、光学和电化学表征
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-08 DOI: 10.1007/s41779-025-01342-5
Suveksha Tamang, Gunja Prasad, Joydeep Biswas, Nayan Kamal Bhattacharyya
{"title":"Microwave-assisted green synthesis of graphene derivatives and their composites with zirconium dioxide: structural, optical and electrochemical characterization","authors":"Suveksha Tamang,&nbsp;Gunja Prasad,&nbsp;Joydeep Biswas,&nbsp;Nayan Kamal Bhattacharyya","doi":"10.1007/s41779-025-01342-5","DOIUrl":"10.1007/s41779-025-01342-5","url":null,"abstract":"<div>\u0000 \u0000 <p>This research reports the synthesis of graphene oxide (GO), reduced graphene oxide (rGO), and composites of zirconium dioxide with rGO (ZrO<sub>2</sub>/rGO) using a microwave-assisted, plant-mediated green synthesis approach. Plant extract of <i>Ocimum tenuiflorum</i> (<i>OT</i>) and <i>Azadirachta indica</i> (<i>AI</i>). The synthesized materials were systematically characterized for their morphological, vibrational, optical, structural, and electrochemical characteristics. XRD analysis confirmed structural modifications upon reduction: the interlayer spacing (d) decreased from 0.85 nm in GO to 0.60 nm in <i>AI</i>-derived rGO (NR) and 0.726 nm in <i>OT</i>-derived rGO (TR), while crystallite size (D) reduced from 7.477 nm (GO) to 1.289 nm (NR) and 3.690 nm (TR). For the composites, <i>OT-</i>derived ZrO<sub>2</sub>/rGO (T-ZR) exhibited a D of 0.499 nm, which is smaller than <i>AI-</i>derived ZrO<sub>2</sub>/rGO (N-ZR. 0.547 nm. Comparative cyclic voltammetry (CV) analysis has demonstrated specific capacitance (<i>C</i><sub><i>S</i></sub>) for the N-ZR (756.63 Fg<sup>− 1</sup>) compared to N-ZR (251.83 Fg<sup>− 1</sup>) and pristine GO (2.95 Fg<sup>− 1</sup>) at a scan rate of 5 mVs<sup>− 1</sup>.</p>\u0000 </div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1577 - 1586"},"PeriodicalIF":2.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965365","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
Bovine hydroxyapatite and low-oxygen tension bone marrow mesenchymal stem cell-derived metabolite improve bone formation in critical-sized bone defect 牛羟基磷灰石和低氧张力骨髓间充质干细胞衍生代谢物促进临界尺寸骨缺损的骨形成
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-08 DOI: 10.1007/s41779-025-01339-0
Taufin Warindra, Ferdiansyah Mahyudin, Mouli Edward, Kukuh Dwiputra Hernugrahanto, Fedik Abdul Rantam, Mohammad Hardian Basuki, Yunus Abdul Bari, Agrippina Waya Rahmaning Gusti, Annas Prasetyo Adi, Yul Faidah Ermawati
{"title":"Bovine hydroxyapatite and low-oxygen tension bone marrow mesenchymal stem cell-derived metabolite improve bone formation in critical-sized bone defect","authors":"Taufin Warindra,&nbsp;Ferdiansyah Mahyudin,&nbsp;Mouli Edward,&nbsp;Kukuh Dwiputra Hernugrahanto,&nbsp;Fedik Abdul Rantam,&nbsp;Mohammad Hardian Basuki,&nbsp;Yunus Abdul Bari,&nbsp;Agrippina Waya Rahmaning Gusti,&nbsp;Annas Prasetyo Adi,&nbsp;Yul Faidah Ermawati","doi":"10.1007/s41779-025-01339-0","DOIUrl":"10.1007/s41779-025-01339-0","url":null,"abstract":"<div>\u0000 \u0000 <p>The treatment of massive bone defects remains a substantial challenge in orthopedic practice due to the limited regenerative capacity of autographs and metal implants. Tissue engineering approaches that integrate Mesenchymal Stem Cell (MSCs), scaffold, dan bioactive metabolites have shown great potential in promoting osteogenesis, particularly through secretome-mediated mechanisms under hypoxic conditions. The objective of this study to examine the effectiveness of metabolites derived from MSCs cultured under normoxic and hypoxic conditions, in combination with hydroxyapatite scaffolds, on bone regeneration in critical-size bone defects at the fourth and eighth weeks. This research is true experimental research which use post-test only control group design. The samples were 42 male New Zealand White rabbits, which were classified into three groups namely, BHA, BHA + normoxic metabolites, and BHA + hypoxic metabolites. These groups were observed at the fourth and eighth weeks. The parameters assessed included microvascularization (MV), woven bone (WB), COL 1, and radiological scores. Data were analyzed using One-Way ANOVA, Brown-Forsythe, Kruskal-Wallis, Mann-Whitney, Post Hoc LSD, and Games-Howell tests to determine significant differences among groups. In addition, statistical analyses were carried out with SPSS, using a significance level of 5% (<i>p</i> &lt; 0.05). The results of the study demonstrated that the implantation of BHA, BHA + normoxic metabolites, and BHA + hypoxic metabolites in the rabbit radius bone produced significant differences in several parameters of bone regeneration. In the 4th week, significant differences were observed in the microvascular and woven bone parameters (<i>p</i> &lt; 0.05), whereas the radiological scores exhibited no significant differences (<i>p</i> &gt; 0.05). At the 8th week, almost all parameters showed significant differences among groups, except for COL 1 (<i>p</i> &gt; 0.05), with notable increases in microvascularization, woven bone formation, and radiological scores compared to the other groups. Normoxic metabolite supplementation with BHA demonstrated superior bone recovery compared to BHA. However, the hypoxic metabolite + BHA composite exhibited the most promising bone regeneration across groups, suggesting its potential as an alternative treatment for critical-sized defects.</p>\u0000 </div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1545 - 1555"},"PeriodicalIF":2.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965367","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
New insights into the impact of iron-rich phases inside thermally treated glauconite on the gamma radiation shielding capability of serpentine/glauconite-based geopolymer 热处理海绿石内部富铁相对蛇纹石/海绿石基地聚合物屏蔽γ辐射能力影响的新见解
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-08 DOI: 10.1007/s41779-025-01328-3
A. Y. Elbatrek, E. Salama, Tarek Abdalla Abdel-Halim, Ahmed S. Elshimy, Moaaz K. Seliem
{"title":"New insights into the impact of iron-rich phases inside thermally treated glauconite on the gamma radiation shielding capability of serpentine/glauconite-based geopolymer","authors":"A. Y. Elbatrek,&nbsp;E. Salama,&nbsp;Tarek Abdalla Abdel-Halim,&nbsp;Ahmed S. Elshimy,&nbsp;Moaaz K. Seliem","doi":"10.1007/s41779-025-01328-3","DOIUrl":"10.1007/s41779-025-01328-3","url":null,"abstract":"<div><p>This study investigates the gamma-ray shielding performance of alkali-activated materials derived from thermally treated glauconite (TTG) and thermally treated serpentine (TTS), activated by a sodium silicate solution. Three TTS/TTG binders were prepared by substituting TTS with TTG at 0%, 20%, and 40% by weight. The phase composition and microstructure of the synthesized binders (TTS/TTG-0%, TTS/TTG-20%, and TTS/TTG-40%) were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The gamma-ray shielding parameters mass attenuation coefficient (µ<sub>m</sub>), effective atomic number (Z<sub>eff</sub>), half value layer (HVL), and exposure build-up factor (EBF) were determined both theoretically and experimentally across a photon energy range of 0.015–15 MeV. Characterization results indicated that adding TTG led to the formation of high-density, iron-rich magnetic phases such as magnesioferrite, and magnetite, alongside hydration products. Both experimental and theoretical evaluations revealed that increasing TTG content significantly enhanced gamma-ray shielding capabilities, attributed to the presence of high atomic number elements within TTG. The measured values aligned closely with theoretical predictions. The study concludes that the incorporation of TTG improves the shielding efficiency of alkali-activated materials due to the formation of dense, magnetic phases. TTS/TTG-20% and TTS/TTG-40% binders demonstrate potential as low-cost, effective geopolymers for radiation shielding applications in nuclear, medical, and industrial fields.</p></div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1389 - 1402"},"PeriodicalIF":2.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-025-01328-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of SiO2-Al2O3-Y2O3sintering additives on mechanical and thermal performance of MgO based porous ceramics sio2 - al2o3 - y2o3烧结添加剂对MgO基多孔陶瓷力学和热性能的影响
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-08 DOI: 10.1007/s41779-025-01338-1
Minghui Sun, Xi Ma, Hetuo Chen, Guohong Zhou, Jianjun Xie
{"title":"Effects of SiO2-Al2O3-Y2O3sintering additives on mechanical and thermal performance of MgO based porous ceramics","authors":"Minghui Sun,&nbsp;Xi Ma,&nbsp;Hetuo Chen,&nbsp;Guohong Zhou,&nbsp;Jianjun Xie","doi":"10.1007/s41779-025-01338-1","DOIUrl":"10.1007/s41779-025-01338-1","url":null,"abstract":"<div>\u0000 \u0000 <p>MgO-CaO-Fe<sub>2</sub>O<sub>3</sub>-x wt.% SiO<sub>2</sub>-y wt.% Al<sub>2</sub>O<sub>3</sub>-z wt.%Y<sub>2</sub>O<sub>3</sub> (3≤x≤15, 0≤y≤12, 0≤z≤12) porous ceramics are prepared by the organic foam template method and the mechanical and thermal performance are investigated. The XRD results illustrate that the main phase is MgO, and the secondary phases include MgSiO<sub>3</sub>, MgAl<sub>2</sub>O<sub>4</sub>, and Y<sub>2</sub>O<sub>3</sub>. The Mg-O-Si and Mg-O-Y peaks are observed in FTIR spectrum, indicating the successful incorporation of additives. The results from mercury intrusion porosimetry show that the porous ceramic is mainly macro-pores, with few meso-pores distributed on the skeleton, which effectively increase total porosity. The SiO<sub>2</sub> doping changes the fracture manner of MgO-CaO-Fe<sub>2</sub>O<sub>3</sub> ceramic from intergranular to transcrystalline, co-addition of Al<sub>2</sub>O<sub>3</sub> can promote the formation of MgAl<sub>2</sub>O<sub>4</sub> spinel that distribute at the grain boundary and decrease grain size of MgO, and the Y<sub>2</sub>O<sub>3</sub> could enable uniform grain size distribution, which disperse external forces evenly to improve the mechanical properties. The MgO composite ceramic synthesized by organic foam template method, due to the high total porosity ~85%, exhibits thermal conductivity below 0.07 W/(m·K), which is almost independent of SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-Y<sub>2</sub>O<sub>3</sub> doping concentration. Typically, the MgO-2.5 wt.% CaO-1 wt.% Fe<sub>2</sub>O<sub>3</sub>-3 wt.% SiO<sub>2</sub>-0.3 wt.% Al<sub>2</sub>O<sub>3</sub>-6 wt.% Y<sub>2</sub>O<sub>3</sub> porous ceramics exhibit total porosity of 84.6%, compressive strength of 4.3 MPa, and thermal conductivity of 0.063 W/(m·K). Benefiting from their outstanding compressive strength and low thermal conductivity, the MgO based porous composite ceramics exhibit significant potential for application as building insulation materials.</p>\u0000 </div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"62 4","pages":"1531 - 1543"},"PeriodicalIF":2.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965296","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
Stabilizing reactive cement phase through targeted doping: the case of β-Belite and boric acid 定向掺杂稳定活性水泥相:以β-贝利特和硼酸为例
IF 2.6 4区 材料科学
Journal of the Australian Ceramic Society Pub Date : 2026-01-08 DOI: 10.1007/s41779-025-01344-3
Rajesh Kumar, Shashank Bishnoi, N. Gopalakrishnan
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