International Journal of Applied Ceramic Technology最新文献

{"title":"Processing–Microstructure–Interface Relation in Garnet-Type LLZO: From Powder Synthesis to Polymer–Ceramic Architectures","authors":"Bokhodir Gulyamov,&nbsp;Mirazim Sobitov,&nbsp;Gulmira Khojieva,&nbsp;Oybek Tursunkulov,&nbsp;Shokir Khojiev","doi":"10.1111/ijac.70281","DOIUrl":"https://doi.org/10.1111/ijac.70281","url":null,"abstract":"<div>\u0000 \u0000 <p>Garnet-type Li₇La₃Zr₂O₁₂ (LLZO) is a leading oxide electrolyte for solid-state lithium batteries because cubic LLZO offers millisiemens-per-centimeter Li⁺ conductivity, thermal stability, and kinetic compatibility with lithium metal. However, practical performance is limited by lithium loss during heating, secondary phases, porosity, resistive grain boundaries, surface contamination, and uneven Li|LLZO contact, which can promote lithium filaments. This review links these problems to powder synthesis, phase stabilization, and densification. Solid-state, sol–gel/Pechini, co-precipitation, combustion, aerosol, and molten-salt routes are compared by cation uniformity, lithium retention, particle morphology, and sinterability. Pressureless, pressure-assisted, field-assisted, ultrafast, and liquid-phase sintering are evaluated for density, grain-boundary resistance, phase purity, and lithium compatibility. The discussion also covers LLZO/polymer membranes, where filler shape, connectivity, interphase chemistry, thickness, and compliance control ion transport. Overall, bulk conductivity alone is insufficient; meaningful comparison requires total conductivity, density, microstructure, surface condition, interfacial resistance, and critical-current data under clearly defined testing conditions.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994522","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}

{"title":"Fabrication of Millimeter-Sized Prismatic Silicon Carbide Fibers via a Catalyst-Free Thermal Evaporation Method","authors":"Fei Li,&nbsp;Haolin Dong,&nbsp;Jie Zhang,&nbsp;Yixuan Gao,&nbsp;Yiyao Ge,&nbsp;Kexin Chen","doi":"10.1111/ijac.70272","DOIUrl":"https://doi.org/10.1111/ijac.70272","url":null,"abstract":"<div>\u0000 \u0000 <p>Prismatic SiC fibers with periodic serrated structure, mostly reaching millimeter-sized lengths, were synthesized by a simple catalyst-free method. The process involved heating SiC nanopowder in a graphite crucible at 1700°C under 0.1-MPa argon atmosphere. The synthesized SiC products consist of SiC fibers several millimeters in length and mostly 0.5–3 µm in diameter. Further, the vapor-solid growth mechanism and detailed growth process of SiC fibers are discussed. The millimeter-sized prismatic SiC fibers have the potential to be applied in fields such as electromagnetic wave absorption.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994520","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}

{"title":"A Comparative Evaluation and a Benefit Assessment of Sintering α-Al2O3 in Induction and Conventional Furnaces","authors":"Hugo Barragán Vargas,&nbsp;María Camila Belduque Correa,&nbsp;Paulina López Eligio,&nbsp;Fernando Álvarez Ramirez,&nbsp;Ivanovich Estrada Guel,&nbsp;Ricardo Cuenca Álvarez,&nbsp;Francisco C. Robles Hernandez","doi":"10.1111/ijac.70278","DOIUrl":"https://doi.org/10.1111/ijac.70278","url":null,"abstract":"<div>\u0000 \u0000 <p>This work provides a quantitative comparison of induction heating and conventional resistance-furnace sintering for the processing of high-purity α-Al₂O₃ ceramics, focusing on thermal behavior, energy efficiency, and sintering quality. The study combines experimental characterization of sintering samples and analysis of thermal curves. Here is also covered an energy-based modeling to propose a microstructural development, heating behavior, and overall energy demand for induction and conventional resistance furnaces. The materials used in this work are commercial alumina (as-received) and milled powder to isolate the effect of the heating method, with a mechanically milled condition. We also examined its influence on microstructure. The samples sintered by induction heating achieved a maximum relative density of ∼98.2% and a Vickers hardness of 2060 ± 22 HV at 1500°C for milled alumina powder, compared to 1980 ± 28 HV and 97.1% relative density for conventional sintering under identical conditions. Thermal simulations in a Matlab-based finite differences methods (FDM) model reveal that resistance-furnace heating is dominated by slow radiative and convective fluxes, leading to a slower achievement of a homogeneous temperature distribution, which in practice means the system takes longer to equilibrate. In induction heating, the sintering starts in the first few minutes and the pellet edges exhibit a more pronounced temperature rise. However, this condition diminishes rapidly, and within a short time the temperature distribution becomes homogeneous, achieving uniformity significantly faster than in a conventional furnace. Energy analysis shows that induction reduces total cumulative electrical consumption by 92.37% relative to the furnace at the highest target temperature evaluated (1500°C).</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994517","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}

{"title":"Effect of Heating Rate on the One-Pot Synthesis of ZrB2–ZrC–SiC Ceramics by PDC Route","authors":"Rajasekhar V. Buragadda,&nbsp;Athira S. R.,&nbsp;Nisha Balachandran,&nbsp;Deepa Devapal,&nbsp;Rameshbabu Nagumothu","doi":"10.1111/ijac.70274","DOIUrl":"https://doi.org/10.1111/ijac.70274","url":null,"abstract":"<div>\u0000 \u0000 <p>Zirconoborosiloxane (ZBS), a preceramic oligomer, was synthesized by a nonaqueous sol–gel route in our earlier work, which yields ceramics of m-ZrO₂, ZrSiO₄, and t-ZrO₂ upon pyrolysis at 1500°C and 1650°C in argon. In the present study, a single system comprised of ZrB_2, ZrC, and SiC ceramics was obtained by a one-pot synthesis route blending ZBS and divinylbenzene (DVB) followed by pyrolysis at 1500°C and 1650°C in argon. The effect of heating rate on the evolution of various ceramic phases was studied by adopting three different heating rates, i.e., 1, 3, and 5°C/min. On the basis of the ceramic phases desired in the final ceramic, process parameters can be tuned. The shortlisted composition of ZBS and DVB, along with the optimized process parameters, is proposed as a matrix resin for the fabrication of continuous C_f/ZrB₂–ZrC–SiC ceramic matrix composites (CMCs) by the polymer infiltration &amp; pyrolysis (PIP) process.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994521","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}

{"title":"Fabrication of Silicon–Ceramic (SiCer) Composite Multilayer Modules With Embedded NTC Thermistor Sensors","authors":"Manuel Heidenreich,&nbsp;Christian Teichmann,&nbsp;Clemens Motzkus,&nbsp;Beate Capraro,&nbsp;Peter Keil,&nbsp;Jörg Töpfer","doi":"10.1111/ijac.70273","DOIUrl":"https://doi.org/10.1111/ijac.70273","url":null,"abstract":"<p>Silicon–ceramics composite substrates (SiCer) are a new concept for combining MEMS devices and ceramic multilayer substrates, which is based on cofiring silicon and low-temperature cofired ceramic (LTCC) substrates. The thermal expansion coefficient of LTCC tape material BCT6 is matched to silicon's coefficient. One advantage of this technology is the ability to integrate passive electronic functions into the LTCC multilayer architecture. In this study, we present the integration of Zn–Co–Cu modified nickel manganate spinel NTC thermistor layers as temperature sensors into the LTCC multilayer architecture of SiCer composite substrates. A paste of thermistor powder was screen-printed on alumina and LTCC substrates, and sintered at 900°C. The similar sintering behavior of LTCC tape and NTC paste allows for cofiring of the two materials. LTCC-integrated temperature sensors were fabricated by cofiring LTCC multilayers with printed thermistor structures and Ag or Au metallization. The functionality of the thermistor elements is documented. Finally, thermistor structures were embedded into the LTCC layers and cofired with Si to create combined SiCer substrates. The R(T) curves of the integrated thermistor elements exhibit NTC thermistor behavior with a B-constant of 3450 K, demonstrating the potential for integrating functional passive components into complex SiCer architectures and expanding potential application scenarios.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70273","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942976","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}

{"title":"Improved Strength and Fine-Grain Microstructure Li2TiO3 Pebbles Fabricated by Freeze Granulation Technique","authors":"Abinash Kumar,&nbsp;K. Pramod Lavya,&nbsp;Aroh Shrivastava,&nbsp;Paritosh Chaudhuri,&nbsp;Ranabrata Mazumder","doi":"10.1111/ijac.70271","DOIUrl":"https://doi.org/10.1111/ijac.70271","url":null,"abstract":"<div>\u0000 \u0000 <p>Lithium titanate (Li₂TiO₃) is being considered as a promising ceramic solid breeder material in the tritium breeding blanket of thermonuclear fusion reactors. This study depicts the fabrication of Li₂TiO₃ ceramic pebbles by a novel freeze granulation technique followed by freeze-drying. Prior to the pebble fabrication, optimizing the slurry is a critical step to ensure a well-dispersed suspension, which is essential for achieving the uniform pore distribution and enhanced crush load in the final Li₂TiO₃ ceramic pebbles. The rheological study on Li₂TiO₃ slurry was performed using four different anionic dispersants, namely polyacrylic acid (PAA), maleic acid, Darvan-C, and BYK-154 with different concentrations. The effect of solid loading (30–45 wt.%) and binder content (1–7 wt.% polyvinyl alcohol [PVA]) was systematically investigated on pebble castability, microstructure, pore size distribution, and crush load. The effect of sintering temperature (1000°C, 1100°C, and 1200°C) was studied on the properties of the pebbles. Optimal fabrication conditions comprising 40 wt.% solid loading, 7 wt.% binder concentration, and sintering at 1100°C resulted in pebbles with excellent sphericity and a maximum average crush load of ∼83 N. Additionally, a uniform pore distribution in the range of 0.5–7 µm was obtained, which is favourable for efficient tritium release during reactor operation.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942802","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}

{"title":"Fabrication and In Vitro Biocompatibility of Hydroxyapatite/Titania@Calcium Titanate Hydroxide Nanosheet Microspheres","authors":"Rui Hou,&nbsp;Jing Zhang,&nbsp;Song Chen,&nbsp;Like Cao,&nbsp;Meiwen An,&nbsp;Weiyi Chen","doi":"10.1111/ijac.70270","DOIUrl":"https://doi.org/10.1111/ijac.70270","url":null,"abstract":"<div>\u0000 \u0000 <p>The surface structure of biomaterials is one of the important factors influencing cell adhesion and proliferation. In this study, the novel hierarchical hydroxyapatite (HAp)/titania/calcium titanate hydroxide nanosheet microspheres were synthesized by in situ growth of calcium titanate hydroxide nanosheets on the HAp/titania microspheres after hydrothermal treatment in sodium hydroxide solution. Their microstructure and in vitro biocompatibility were investigated. SEM observations showed that each microsphere was spherical in morphology and had diameters of 50–200 µm. The surface of each microsphere was constructed of numerous nanosheets with diameters of 10–30 nm and exhibited hierarchical structure. XRD pattern showed that those nanosheets were assigned to calcium titanate hydroxide. TEM observations showed that Ca, O, and Ti elements were well distributed in each nanosheet. In vitro biocompatibility evaluation showed that the hierarchical HAp/titania/calcium titanate hydroxide nanosheet microspheres were biocompatible and enhanced cell adhesion and proliferation in contrast with nanosheet-free HAp/titania microspheres, indicating that they have potential as novel biocompatible cell carriers.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942576","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}

{"title":"A New Digital Twin for Thermal Management of Spark Plasma Sintering Tooling","authors":"Alexander M. Laptev,&nbsp;Wiktoria Krzyżaniak,&nbsp;Maria Wiśniewska,&nbsp;Dariusz Garbiec","doi":"10.1111/ijac.70268","DOIUrl":"https://doi.org/10.1111/ijac.70268","url":null,"abstract":"<div>\u0000 \u0000 <p>Spark plasma sintering (SPS) is a technique that uses resistive heating to enable rapid sintering. The ongoing industrialization of SPS is tied to the scaling of sintered parts. However, upscaling can lead to an inhomogeneous temperature distribution during sintering and to non-uniform properties in the sintered components. A solution lies in optimizing the SPS tooling design. The paper addresses this issue with a new digital twin, Leonardo 2.0, that numerically replicates the SPS setup. The digital twin is paired with an external database that contains properties of sintered and tooling materials. A control file governs the digital twin's operations in a specific case study. This editable ASCII file specifies the tooling geometry, materials, sintering cycle, boundary conditions, and output options. The paper demonstrates the application of the digital twin to analyze the impact of tooling components on the temperature distribution in electrically conductive (tungsten) and insulating (3YSZ zirconia) samples. The digital twin has great potential for applications in SPS tooling design across research and industry.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942007","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}

{"title":"Processing of Low-Cost Porous Ceramics for Water Filtration: Structural and Technological Properties","authors":"Iffat Qoudsiyyah Maury Njoya,&nbsp;Gisèle Laure Lecomte-Nana,&nbsp;Youssef El Hafiane,&nbsp;Claire Peyratout,&nbsp;Abdellafif Imad,&nbsp;Dayirou Njoya,&nbsp;Geneviève Feuillade,&nbsp;Virginie Pallier","doi":"10.1111/ijac.70267","DOIUrl":"https://doi.org/10.1111/ijac.70267","url":null,"abstract":"<div>\u0000 \u0000 <p>The general purpose is the development and characterization of sustainable, high-performance porous ceramics based on phyllosilicate materials from Cameroon and peanut shells for water filtration. Three raw clays were selected (denoted H, K, and M), together with peanut shells (denoted C). Different samples were prepared, and the proportion of peanut shells was 0, 20, and 25 wt%. All the samples were shaped by uniaxial pressing and sintered at a heating rate of 5°C.min⁻¹ at 1100°C, with a soaking time of 1 h. Results showed that the mineralogical composition of Clays H and K consists of the major clay phases halloysite and kaolinite, respectively, while that of Clay M consists mostly of montmorillonite and kaolinite. XRD analysis of C indicated the presence of Cellulose I and II as major phases. Open porosity varied between 13% and 60%, and diametrical compressive strength varied from 0.7 to 6.0 ± 0.05 MPa. SEM images agreed with the porosity values obtained. The permeability and thermal conductivity varied from 27.01 to 6568.57 ± 0.01 L.h⁻¹.m⁻².bar⁻¹ and 0.2053 to 1.302 W.m⁻¹.K⁻¹, respectively. The porous ceramics have pore sizes suitable for ultrafiltration and microfiltration. Sample MC20 exhibited a bacteria removal (<i>Escherichia coli</i>) of 94%.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148860155","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}

{"title":"Hydroxyapatite–Mesoporous Silica Composites for Dual Quercetin Release and Encapsulation Efficiency","authors":"Elçin Sarıaslan,&nbsp;Zeynep Aktaş-Erden,&nbsp;Emir Zafer Hoşgün,&nbsp;Berrin Bozan","doi":"10.1111/ijac.70250","DOIUrl":"https://doi.org/10.1111/ijac.70250","url":null,"abstract":"<p>Quercetin (QC) is a flavonoid with strong antioxidant and anti-inflammatory properties, but its poor absorption and rapid metabolism significantly limit its bioavailability. Therefore, selecting an appropriate carrier material is critical for improving its loading and release performance. Recent studies have shown that hydroxyapatite/silica (HAP) composites exhibit higher bioactivity than pure HAP, while silica, a bioglass-based material, is well tolerated by the human body. In this study, QC was loaded into HAP composites to investigate how different HAP ratios affect encapsulation efficiency, loading capacity, antioxidant activity, and release behavior in simulated gastric fluid (SGF, pH 1.2) and phosphate-buffered saline (PBS, pH 7.4). Composites with HAP ratios of 1:1, 2:1, and 3:2 were synthesized and characterized by FTIR, XRD, SEM, and BET analyses to evaluate their structural, chemical, and surface properties. Among the formulations, HAP (2:1) showed the highest encapsulation efficiency (92%), while HAP (3:2) exhibited a more controlled release profile in PBS (59.1%). In contrast, HAP (1:1) showed the highest release under acidic conditions (98%). The DPPH assay confirmed that the QC -loaded composites retained antioxidant activity. Release data fit the Korsmeyer–Peppas model (<i>R</i>² &gt; 0.98), indicating that both diffusion and matrix erosion governed drug release.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"23 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70250","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615659","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}