Suhita Kar Chowdhury, Noor Ahammad, Aoly Ur Rahman, Md. Kabir Uddin Sikder
{"title":"A DFT Assessment on the Structural, Thermodynamic, and Electrical Properties of Transition Metal-Doped Gallium Arsenide Nanoclusters (GanAsn, Where n = 4, 5, and 6)","authors":"Suhita Kar Chowdhury, Noor Ahammad, Aoly Ur Rahman, Md. Kabir Uddin Sikder","doi":"10.1002/ces2.70046","DOIUrl":"https://doi.org/10.1002/ces2.70046","url":null,"abstract":"<p>The foundation of advanced nanotechnology lies in the extensive attention given by researchers to the exceptional properties of nanomaterials. This work incorporates a computational investigation on structural, thermodynamic, and electrical properties of different gallium arsenide nanoclusters—Ga<sub>n</sub>As<sub>n</sub>, where <i>n</i> = 4, 5, and 6, and the effect of doping with transition metals (TMs) (Cu and Ag) on them using density functional (DFT) theory. Since the structures exhibit no peaks in the imaginary IR frequency range, they tend to form naturally in their stable energy minima. Moreover, doping introduces higher reactivity and structural deformation in pristine nanoclusters, and alternating doping with a TM atom causes a significant impact on the pristine structure. The analyzed charge distribution suggests a remarkable increase in polarity due to TM-dopants, indicating the capability of electrostatic interactions of the systems with external molecules, an essential feature for developing sensors. In addition to this, the observed molecular orbitals signify the structures as semiconductors, having energy gaps ranging from 1.30 to 2.50 eV. Together, these findings suggest that the studied TM-doped gallium arsenide nanoclusters are applicable broadly in the next-generation semiconductor industry.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147568042","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}
Suhita Kar Chowdhury, Noor Ahammad, Aoly Ur Rahman, Md. Kabir Uddin Sikder
{"title":"A DFT Assessment on the Structural, Thermodynamic, and Electrical Properties of Transition Metal-Doped Gallium Arsenide Nanoclusters (GanAsn, Where n = 4, 5, and 6)","authors":"Suhita Kar Chowdhury, Noor Ahammad, Aoly Ur Rahman, Md. Kabir Uddin Sikder","doi":"10.1002/ces2.70046","DOIUrl":"https://doi.org/10.1002/ces2.70046","url":null,"abstract":"<p>The foundation of advanced nanotechnology lies in the extensive attention given by researchers to the exceptional properties of nanomaterials. This work incorporates a computational investigation on structural, thermodynamic, and electrical properties of different gallium arsenide nanoclusters—Ga<sub>n</sub>As<sub>n</sub>, where <i>n</i> = 4, 5, and 6, and the effect of doping with transition metals (TMs) (Cu and Ag) on them using density functional (DFT) theory. Since the structures exhibit no peaks in the imaginary IR frequency range, they tend to form naturally in their stable energy minima. Moreover, doping introduces higher reactivity and structural deformation in pristine nanoclusters, and alternating doping with a TM atom causes a significant impact on the pristine structure. The analyzed charge distribution suggests a remarkable increase in polarity due to TM-dopants, indicating the capability of electrostatic interactions of the systems with external molecules, an essential feature for developing sensors. In addition to this, the observed molecular orbitals signify the structures as semiconductors, having energy gaps ranging from 1.30 to 2.50 eV. Together, these findings suggest that the studied TM-doped gallium arsenide nanoclusters are applicable broadly in the next-generation semiconductor industry.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147568239","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}
Bipul Mondal Sagar, Kazi Imtiaz Ahmed Nakib, Sanjida Khan, Subarna Sandhani Dey, Md. Lawshan Habib, Samina Ahmed, Md. Sahadat Hossain
{"title":"Synthesis and Characterization of Metal-doped Chitosan-Hydroxyapatite Composites for the Tuning of Properties: Evaluating Antibacterial Activity and Drug Release","authors":"Bipul Mondal Sagar, Kazi Imtiaz Ahmed Nakib, Sanjida Khan, Subarna Sandhani Dey, Md. Lawshan Habib, Samina Ahmed, Md. Sahadat Hossain","doi":"10.1002/ces2.70048","DOIUrl":"https://doi.org/10.1002/ces2.70048","url":null,"abstract":"<p>The search for versatile, sustainable composites with enhanced antibacterial properties has been driven by the rising threat of antibiotic-resistant diseases and the need for advanced biomaterials for medication delivery. This work involves the synthesis and thorough characterization of chitosan-hydroxyapatite (CS-HAp) composites derived from snail and shrimp shells, respectively, doped with copper (Cu<sup>2</sup>+) and zinc (Zn<sup>2</sup>+) nanoparticles. A series of chemical processes, including demineralization, deproteinization, deacetylation, and calcination, was used to produce these composites. Metal doping was incorporated during the fabrication process. Fourier-transform infrared and X-ray diffraction analyses confirmed the successful integration and interaction of CS, HAp, and metal ions, and the crystalline structure remained intact during drug loading and release. Antimicrobial tests showed modest antibacterial activity, predominantly against Gram-positive <i>Staphylococcus aureus</i>, with increased effectiveness at higher metal ion concentrations. Thermogravimetric analysis demonstrated excellent heat stability. Specifically, in Zn-doped samples, drug release in simulated bodily fluid exhibited an initial rapid phase (80%–90% within 50 h), followed by sustained release. Overall, CS, HAp, and metal ions work synergistically to provide biocompatibility, structural integrity, and controlled drug delivery, as shown by the data.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566982","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}
Bipul Mondal Sagar, Kazi Imtiaz Ahmed Nakib, Sanjida Khan, Subarna Sandhani Dey, Md. Lawshan Habib, Samina Ahmed, Md. Sahadat Hossain
{"title":"Synthesis and Characterization of Metal-doped Chitosan-Hydroxyapatite Composites for the Tuning of Properties: Evaluating Antibacterial Activity and Drug Release","authors":"Bipul Mondal Sagar, Kazi Imtiaz Ahmed Nakib, Sanjida Khan, Subarna Sandhani Dey, Md. Lawshan Habib, Samina Ahmed, Md. Sahadat Hossain","doi":"10.1002/ces2.70048","DOIUrl":"https://doi.org/10.1002/ces2.70048","url":null,"abstract":"<p>The search for versatile, sustainable composites with enhanced antibacterial properties has been driven by the rising threat of antibiotic-resistant diseases and the need for advanced biomaterials for medication delivery. This work involves the synthesis and thorough characterization of chitosan-hydroxyapatite (CS-HAp) composites derived from snail and shrimp shells, respectively, doped with copper (Cu<sup>2</sup>+) and zinc (Zn<sup>2</sup>+) nanoparticles. A series of chemical processes, including demineralization, deproteinization, deacetylation, and calcination, was used to produce these composites. Metal doping was incorporated during the fabrication process. Fourier-transform infrared and X-ray diffraction analyses confirmed the successful integration and interaction of CS, HAp, and metal ions, and the crystalline structure remained intact during drug loading and release. Antimicrobial tests showed modest antibacterial activity, predominantly against Gram-positive <i>Staphylococcus aureus</i>, with increased effectiveness at higher metal ion concentrations. Thermogravimetric analysis demonstrated excellent heat stability. Specifically, in Zn-doped samples, drug release in simulated bodily fluid exhibited an initial rapid phase (80%–90% within 50 h), followed by sustained release. Overall, CS, HAp, and metal ions work synergistically to provide biocompatibility, structural integrity, and controlled drug delivery, as shown by the data.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566920","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}
Danqi Yin, Jessica J. Sly, Cristian Perez Velasquez, Nichole M. Wonderling, Dean Anderson, Maziar Montazerian, Philipp Hunziker, Ivan A. Cornejo, John C. Mauro
{"title":"Semiquantitative Analysis of Phase Evolution and Viscosity in Perlite","authors":"Danqi Yin, Jessica J. Sly, Cristian Perez Velasquez, Nichole M. Wonderling, Dean Anderson, Maziar Montazerian, Philipp Hunziker, Ivan A. Cornejo, John C. Mauro","doi":"10.1002/ces2.70045","DOIUrl":"https://doi.org/10.1002/ces2.70045","url":null,"abstract":"<p>Perlite is a noncrystalline volcanic rock with rhyolitic composition that expands four to 20 times its original volume when heated, forming a porous structure widely used in filtration, catalysis, and construction. Raw perlite consists of a noncrystalline aluminosilicate matrix and 10–15 wt.% crystalline phase. Semiquantitative data on perlite crystal species and reliable viscosity measurements of its noncrystalline aluminosilicate component remain scarce. Yet, they are crucial for understanding the morphological evolution of the perlite skeleton during high-temperature heating. This study developed two methods for measuring the viscosity of the noncrystalline portion of perlite over a temperature range near and above the estimated glass transition temperature using a combined experimental–modeling approach. Both methods integrate semiquantitative X-ray diffraction (XRD) analysis and simultaneous differential thermal analysis, with viscosity modeled using the Mauro–Yue–Ellison–Gupta–Allan (MYEGA) equation. In the first method, synthesized glass replicating the composition of perlite skeletons is characterized by inductively coupled plasma–atomic emission spectroscopy (ICP-AES) and semiquantitative XRD, and its viscosity within a temperature range near and above the estimated glass transition temperature of the noncrystalline component is determined by applying the MYEGA equation to heat flow scanning data. In the second method, the crystalline contribution is subtracted from the heat flow curve using temperature-dependent heat capacity data collected based on crystalline phases characterized by XRD results before applying the MYEGA equation to calculate the viscosity of the noncrystalline perlite skeleton within the temperature range.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565710","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}
Ana Lucia de Souza Niero, Sarah Mozzaquatro Pasini, Sergio Yesid Gómez González, Dachamir Hotza
{"title":"Structured Macroporous SiC-LaNiO3 Catalysts for Hydrogen Production via Visible-Light Glycerol Photoreforming","authors":"Ana Lucia de Souza Niero, Sarah Mozzaquatro Pasini, Sergio Yesid Gómez González, Dachamir Hotza","doi":"10.1002/ces2.70042","DOIUrl":"10.1002/ces2.70042","url":null,"abstract":"<p>Robust supports functionalized with active catalytic phases present a promising route to enhance photocatalytic hydrogen production. Progress in hydrogen generation strongly depends on the design of structured catalysts with tailored architectures and active interfaces. This study presents macroporous silicon carbide (SiC) structures functionalized with LaNiO<sub>3</sub> perovskite as structured catalysts for glycerol photoreforming under visible light. SiC foams were fabricated via the replica method using polymeric templates and sintered at 1000°C, with a vitreous frit residue serving as a flux agent to enable more energy-efficient processing. LaNiO<sub>3</sub> was synthesized by a sol–gel route. The materials were characterized by zeta potential, x-ray diffraction, scanning electron microscopy (SEM)/energy-dispersive x-ray spectroscopy (EDS), diffuse reflectance spectroscopy, and surface area measurements. Photocatalytic tests were performed under visible irradiation in an in-house quartz reactor, and hydrogen evolution was monitored using an Arduino-based acquisition system coupled to an MQ-8 sensor. Glycerol, a common byproduct of biodiesel production, was used as a sacrificial agent, highlighting the potential of waste-derived feedstocks for sustainable solar fuel production. Under the tested conditions, the SiC-LaNiO<sub>3</sub> structured catalyst produced approximately 90 µmol g<sup>−1</sup> of H<sub>2</sub> in 60 min, outperforming bare SiC (≈57 µmol g<sup>−1</sup>). The improved performance is associated with enhanced visible-light absorption, lower bandgap, increased accessible surface area, and the intrinsic robustness of the structured SiC support.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565648","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}
Ana Lucia de Souza Niero, Sarah Mozzaquatro Pasini, Sergio Yesid Gómez González, Dachamir Hotza
{"title":"Structured Macroporous SiC-LaNiO3 Catalysts for Hydrogen Production via Visible-Light Glycerol Photoreforming","authors":"Ana Lucia de Souza Niero, Sarah Mozzaquatro Pasini, Sergio Yesid Gómez González, Dachamir Hotza","doi":"10.1002/ces2.70042","DOIUrl":"https://doi.org/10.1002/ces2.70042","url":null,"abstract":"<p>Robust supports functionalized with active catalytic phases present a promising route to enhance photocatalytic hydrogen production. Progress in hydrogen generation strongly depends on the design of structured catalysts with tailored architectures and active interfaces. This study presents macroporous silicon carbide (SiC) structures functionalized with LaNiO<sub>3</sub> perovskite as structured catalysts for glycerol photoreforming under visible light. SiC foams were fabricated via the replica method using polymeric templates and sintered at 1000°C, with a vitreous frit residue serving as a flux agent to enable more energy-efficient processing. LaNiO<sub>3</sub> was synthesized by a sol–gel route. The materials were characterized by zeta potential, x-ray diffraction, scanning electron microscopy (SEM)/energy-dispersive x-ray spectroscopy (EDS), diffuse reflectance spectroscopy, and surface area measurements. Photocatalytic tests were performed under visible irradiation in an in-house quartz reactor, and hydrogen evolution was monitored using an Arduino-based acquisition system coupled to an MQ-8 sensor. Glycerol, a common byproduct of biodiesel production, was used as a sacrificial agent, highlighting the potential of waste-derived feedstocks for sustainable solar fuel production. Under the tested conditions, the SiC-LaNiO<sub>3</sub> structured catalyst produced approximately 90 µmol g<sup>−1</sup> of H<sub>2</sub> in 60 min, outperforming bare SiC (≈57 µmol g<sup>−1</sup>). The improved performance is associated with enhanced visible-light absorption, lower bandgap, increased accessible surface area, and the intrinsic robustness of the structured SiC support.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565773","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}
Danqi Yin, Jessica J. Sly, Cristian Perez Velasquez, Nichole M. Wonderling, Dean Anderson, Maziar Montazerian, Philipp Hunziker, Ivan A. Cornejo, John C. Mauro
{"title":"Semiquantitative Analysis of Phase Evolution and Viscosity in Perlite","authors":"Danqi Yin, Jessica J. Sly, Cristian Perez Velasquez, Nichole M. Wonderling, Dean Anderson, Maziar Montazerian, Philipp Hunziker, Ivan A. Cornejo, John C. Mauro","doi":"10.1002/ces2.70045","DOIUrl":"10.1002/ces2.70045","url":null,"abstract":"<p>Perlite is a noncrystalline volcanic rock with rhyolitic composition that expands four to 20 times its original volume when heated, forming a porous structure widely used in filtration, catalysis, and construction. Raw perlite consists of a noncrystalline aluminosilicate matrix and 10–15 wt.% crystalline phase. Semiquantitative data on perlite crystal species and reliable viscosity measurements of its noncrystalline aluminosilicate component remain scarce. Yet, they are crucial for understanding the morphological evolution of the perlite skeleton during high-temperature heating. This study developed two methods for measuring the viscosity of the noncrystalline portion of perlite over a temperature range near and above the estimated glass transition temperature using a combined experimental–modeling approach. Both methods integrate semiquantitative X-ray diffraction (XRD) analysis and simultaneous differential thermal analysis, with viscosity modeled using the Mauro–Yue–Ellison–Gupta–Allan (MYEGA) equation. In the first method, synthesized glass replicating the composition of perlite skeletons is characterized by inductively coupled plasma–atomic emission spectroscopy (ICP-AES) and semiquantitative XRD, and its viscosity within a temperature range near and above the estimated glass transition temperature of the noncrystalline component is determined by applying the MYEGA equation to heat flow scanning data. In the second method, the crystalline contribution is subtracted from the heat flow curve using temperature-dependent heat capacity data collected based on crystalline phases characterized by XRD results before applying the MYEGA equation to calculate the viscosity of the noncrystalline perlite skeleton within the temperature range.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565647","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}
Achim Rübling, Pascal Hölzel, Alexander Pilder, Laura Hönisch, Moritz Schrodberger, Marcel Kleyla, Martin Bartecki, Katja Süchting-Rose, Hannes Kühl
{"title":"The Brittle Ring Test: A Simple and Reliable Method for Evaluating the Fracture Strength of Technical Ceramics—Theoretical and Experimental Investigations","authors":"Achim Rübling, Pascal Hölzel, Alexander Pilder, Laura Hönisch, Moritz Schrodberger, Marcel Kleyla, Martin Bartecki, Katja Süchting-Rose, Hannes Kühl","doi":"10.1002/ces2.70047","DOIUrl":"10.1002/ces2.70047","url":null,"abstract":"<p>In contrast to the three- and four-point method as well as the C-ring tests, the brittle ring test, where ceramic rings are tested under diametral compression, is a simple and time-saving method for measuring the fracture strength of technical ceramics, as the ceramic samples can be measured as fired without time-consuming hard machining. The authors evaluate the various formulas that have been established over the past 100 years for determining the fracture strength of ring-shaped samples and present an adapted formula that is by far best suited for calculating the strength in comparison to the other formulas. This is illustrated using the example of uniaxially dry-pressed alumina specimens with different ring geometries. If certain conditions are observed, such as a suitable ratio of inner to outer radius and a ring height that is not too large, the brittle ring method is ideal for determining valid strength values of technical ceramics without a great deal of preparation work.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564960","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}
Achim Rübling, Pascal Hölzel, Alexander Pilder, Laura Hönisch, Moritz Schrodberger, Marcel Kleyla, Martin Bartecki, Katja Süchting-Rose, Hannes Kühl
{"title":"The Brittle Ring Test: A Simple and Reliable Method for Evaluating the Fracture Strength of Technical Ceramics—Theoretical and Experimental Investigations","authors":"Achim Rübling, Pascal Hölzel, Alexander Pilder, Laura Hönisch, Moritz Schrodberger, Marcel Kleyla, Martin Bartecki, Katja Süchting-Rose, Hannes Kühl","doi":"10.1002/ces2.70047","DOIUrl":"10.1002/ces2.70047","url":null,"abstract":"<p>In contrast to the three- and four-point method as well as the C-ring tests, the brittle ring test, where ceramic rings are tested under diametral compression, is a simple and time-saving method for measuring the fracture strength of technical ceramics, as the ceramic samples can be measured as fired without time-consuming hard machining. The authors evaluate the various formulas that have been established over the past 100 years for determining the fracture strength of ring-shaped samples and present an adapted formula that is by far best suited for calculating the strength in comparison to the other formulas. This is illustrated using the example of uniaxially dry-pressed alumina specimens with different ring geometries. If certain conditions are observed, such as a suitable ratio of inner to outer radius and a ring height that is not too large, the brittle ring method is ideal for determining valid strength values of technical ceramics without a great deal of preparation work.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.70047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565151","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}