Pub Date : 2026-01-01DOI: 10.1016/j.bsecv.2025.100481
Marta Rodrigo , María Fernanda Gazulla , Arnaldo Moreno
Cobalt is essential to industrial growth, and a low-carbon economy. It is crucial to the production of lithium-ion batteries and national security. Other industrial applications are: superalloys, catalysts, hard metals, ceramics, or magnets. In particular, 5.3% cobalt demand was used in the ceramic sector in 2024, accounting for almost 12 kt. The European Union (EU) relies on imports of refined cobalt, especially from China and the Democratic Republic of the Congo. To ensure strategic autonomy, the EU aims to increase cobalt processing and recycling. This study focuses on the optimization of the leaching process to recover cobalt from spent LIBs with high efficiency and purity for sustainable use. Sulphuric, citric, and nitric acids were selected for the study, varying the concentration of the dissolution, reaction time and temperature, and the solid-to-liquid ratio. The best results were obtained using a 2 M HNO3 solution with 4 vol.% H2O2 and a 1:50 solid-to-liquid ratio, working at a temperature of 85 °C for 60 min. The applicability of the recovered cobalt oxide was assessed by its use in the synthesis of a ceramic blue pigment.
{"title":"Urban mining of Co3O4 spinel from spent lithium-ion batteries","authors":"Marta Rodrigo , María Fernanda Gazulla , Arnaldo Moreno","doi":"10.1016/j.bsecv.2025.100481","DOIUrl":"10.1016/j.bsecv.2025.100481","url":null,"abstract":"<div><div>Cobalt is essential to industrial growth, and a low-carbon economy. It is crucial to the production of lithium-ion batteries and national security. Other industrial applications are: superalloys, catalysts, hard metals, ceramics, or magnets. In particular, 5.3% cobalt demand was used in the ceramic sector in 2024, accounting for almost 12 kt. The European Union (EU) relies on imports of refined cobalt, especially from China and the Democratic Republic of the Congo. To ensure strategic autonomy, the EU aims to increase cobalt processing and recycling. This study focuses on the optimization of the leaching process to recover cobalt from spent LIBs with high efficiency and purity for sustainable use. Sulphuric, citric, and nitric acids were selected for the study, varying the concentration of the dissolution, reaction time and temperature, and the solid-to-liquid ratio. The best results were obtained using a 2<!--> <!-->M HNO<sub>3</sub> solution with 4<!--> <!-->vol.% H<sub>2</sub>O<sub>2</sub> and a 1:50 solid-to-liquid ratio, working at a temperature of 85<!--> <!-->°C for 60<!--> <!-->min. The applicability of the recovered cobalt oxide was assessed by its use in the synthesis of a ceramic blue pigment.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"65 1","pages":"Article 100481"},"PeriodicalIF":2.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145926222","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}
Pub Date : 2026-01-01DOI: 10.1016/j.bsecv.2025.100482
Sara Serena, María Antonia Sainz, Ángel Caballero
Stability and microstructure of tricalcium phosphate polymorphs (TCP) in the Ca3(PO4)2–Zn3(PO4)2·Mg3(PO4)2 phase equilibria diagram from experimental studies between 1200 °C and 1400 °C have been determined. Solid-state compatibilities in the CaO–P2O5–MgO–ZnO system were defined at 900 °C for P2O5 ≤ 50% mole %, from a complete review of the previously published binary, pseudo-binary, ternary and pseudo-ternary systems and key phase diagrams experiments on CaO–P2O5–MgO–ZnO system. The phase compatibilities of TCP, without considering solid solutions, except for Mg2P2O7-Zn2P2O7 complete solid solution, were stablished and the role of MgO and ZnO on the formation of phases compatible with Ca3(PO4)2 was discussed.
{"title":"Stability of tricalcium phosphate polymorphs in the Ca3(PO4)2–Zn3(PO4)2–Mg3(PO4)2 system and solid-state compatibilities of CaO–P2O5–MgO–ZnO system at 900 °C","authors":"Sara Serena, María Antonia Sainz, Ángel Caballero","doi":"10.1016/j.bsecv.2025.100482","DOIUrl":"10.1016/j.bsecv.2025.100482","url":null,"abstract":"<div><div>Stability and microstructure of tricalcium phosphate polymorphs (TCP) in the Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>–Zn<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>·Mg<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> phase equilibria diagram from experimental studies between 1200<!--> <!-->°C and 1400<!--> <!-->°C have been determined. Solid-state compatibilities in the CaO–P<sub>2</sub>O<sub>5</sub>–MgO–ZnO system were defined at 900<!--> <!-->°C for P<sub>2</sub>O<sub>5</sub> <!-->≤<!--> <!-->50% mole %, from a complete review of the previously published binary, pseudo-binary, ternary and pseudo-ternary systems and key phase diagrams experiments on CaO–P<sub>2</sub>O<sub>5</sub>–MgO–ZnO system. The phase compatibilities of TCP, without considering solid solutions, except for Mg<sub>2</sub>P<sub>2</sub>O<sub>7</sub>-Zn<sub>2</sub>P<sub>2</sub>O<sub>7</sub> complete solid solution, were stablished and the role of MgO and ZnO on the formation of phases compatible with Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> was discussed.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"65 1","pages":"Article 100482"},"PeriodicalIF":2.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977604","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}
Pub Date : 2025-12-09DOI: 10.1016/j.bsecv.2025.100477
Carolina Cardell , Maja Urosevic , Danielle Dias Martins , Isabel Guerra , Alberto García Porras
This work presents the first systematic archaeometric data of 13th–14th century AD Nasrid glazed architectural ceramics from the Alhambra and Generalife, focusing on colour-specific glazing technologies. Findings provide new insights into Nasrid glazing technology, ceramic typologies, and conservation implications, contributing to discussions on Islamic material culture and technical traditions in al-Andalus. Analysed typologies include mosaic, inlay, relief tiles, roof lights, and steles with glazes in white, blue, green-turquoise, black, and honey tones. Microstructural and chemical results reveal decorative chromophores and techniques to be a reference for future studies. Most glazes are inglaze on lead tin-opacified bases, fired in oxidising conditions at ∼950 °C. Phosphorus was found in weathered glazes (associated with a burial environment) and unweathered white and blue glazes, suggesting deliberate addition of bones (fragments/ashes). Identified phases in most glazes were unmelted quartz and feldspars grains, and relatively abundant Cr-bearing wollastonite crystals precipitated during firing. Furthermore, one of the fragments with a black surface was determined not to be a glaze, but rather a polished section of a metamorphic rock.
{"title":"Archaeometric analysis of Nasrid glazed architectural ceramics from the Alhambra and Generalife Monument, Granada (Spain)","authors":"Carolina Cardell , Maja Urosevic , Danielle Dias Martins , Isabel Guerra , Alberto García Porras","doi":"10.1016/j.bsecv.2025.100477","DOIUrl":"10.1016/j.bsecv.2025.100477","url":null,"abstract":"<div><div>This work presents the first systematic archaeometric data of 13th–14th century AD Nasrid glazed architectural ceramics from the Alhambra and Generalife, focusing on colour-specific glazing technologies. Findings provide new insights into Nasrid glazing technology, ceramic typologies, and conservation implications, contributing to discussions on Islamic material culture and technical traditions in al-Andalus. Analysed typologies include mosaic, inlay, relief tiles, roof lights, and steles with glazes in white, blue, green-turquoise, black, and honey tones. Microstructural and chemical results reveal decorative chromophores and techniques to be a reference for future studies. Most glazes are inglaze on lead tin-opacified bases, fired in oxidising conditions at ∼950<!--> <!-->°C. Phosphorus was found in weathered glazes (associated with a burial environment) and unweathered white and blue glazes, suggesting deliberate addition of bones (fragments/ashes). Identified phases in most glazes were unmelted quartz and feldspars grains, and relatively abundant Cr-bearing wollastonite crystals precipitated during firing. Furthermore, one of the fragments with a black surface was determined not to be a glaze, but rather a polished section of a metamorphic rock.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"65 1","pages":"Article 100477"},"PeriodicalIF":2.7,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145705343","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}
Pub Date : 2025-11-01DOI: 10.1016/j.bsecv.2025.100475
Demetrio Fuentes Hernández , Marissa Vargas Ramírez , Damián Díaz Guzmán , Violeta Ramírez Trejo , Luis Eduardo Trujillo Villanueva , Edgar Arturo Chávez Urbiola , Felipe Legorreta García
α-Alumina was synthesized from recycled aluminum, which has shown reflective properties similar to a commercial version. The powder's characteristics were elucidated through X-ray diffraction (XRD) and UV–Vis spectroscopy, revealing its capacity to reflect up to 92.84% of visible radiation within the 400–800 nm spectral range. This reflection efficiency is 0.32% lower compared to the high-purity commercial version. These characteristics enabled its application in the synthesis of reflective coatings on enameled low-carbon steel to produce diffuse reflectors (DR). The coatings were synthesized using the Sol-Gel method and applied via spraying. Subsequently, they underwent visible spectroscopy, hardness testing, and adhesion testing to evaluate their performance. These tests revealed that the coatings exhibited diffuse reflection (ρd) up to 72.30% of visible radiation, significantly enhancing photothermal generation by 10.33% and photovoltaic generation by 7.3% as determined by the computational simulation software Comsol Multiphysics. The coatings also demonstrated a hardness of 5H and an adhesion strength of 5B.
{"title":"Boosting solar energy generation through recycling: Synthesis, characterization and simulation of a ceramic-based diffuse reflector","authors":"Demetrio Fuentes Hernández , Marissa Vargas Ramírez , Damián Díaz Guzmán , Violeta Ramírez Trejo , Luis Eduardo Trujillo Villanueva , Edgar Arturo Chávez Urbiola , Felipe Legorreta García","doi":"10.1016/j.bsecv.2025.100475","DOIUrl":"10.1016/j.bsecv.2025.100475","url":null,"abstract":"<div><div>α-Alumina was synthesized from recycled aluminum, which has shown reflective properties similar to a commercial version. The powder's characteristics were elucidated through X-ray diffraction (XRD) and UV–Vis spectroscopy, revealing its capacity to reflect up to 92.84% of visible radiation within the 400–800<!--> <!-->nm spectral range. This reflection efficiency is 0.32% lower compared to the high-purity commercial version. These characteristics enabled its application in the synthesis of reflective coatings on enameled low-carbon steel to produce diffuse reflectors (DR). The coatings were synthesized using the Sol-Gel method and applied via spraying. Subsequently, they underwent visible spectroscopy, hardness testing, and adhesion testing to evaluate their performance. These tests revealed that the coatings exhibited diffuse reflection (<em>ρd</em>) up to 72.30% of visible radiation, significantly enhancing photothermal generation by 10.33% and photovoltaic generation by 7.3% as determined by the computational simulation software Comsol Multiphysics. The coatings also demonstrated a hardness of 5H and an adhesion strength of 5B.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"64 6","pages":"Article 100475"},"PeriodicalIF":2.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617847","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}
Pub Date : 2025-11-01DOI: 10.1016/j.bsecv.2025.100476
Victor Carnicer, Maria Dolores Palacios, Adriana Belda, Sergio Mestre
Controlling bacterial and viral growth in surfaces is crucial in combating infectious diseases. Therefore, the development of glazes with bactericidal and viricidal effects for ceramic tiles appears highly advantageous. These glazes would facilitate personal and public hygiene due to the widespread use of ceramic tiles in the construction industry and urban planning (homes, hospitals, etc.).
Biocidal glazes have been developed from a silver containing frit. This frit has been formulated by substitution of a fraction of alkaline oxides for silver and obtained by melting and quenching the melt. Its composition allows the incorporation of the silver into the vitreous network. Silver-containing glazes for wall tiles and floor tiles had been obtained from the frit, but a fraction of the silver was present as metallic silver particles. The inhibitor effect of the glazes against bacteria (Escherichia coli and Staphylococcus aureus) and virus (TEGV) was verified according to ISO 22196:2011/JIS Z 2081/2010 and ISO 21702:2019 standards respectively.
The production of biocidal tiles was successfully scaled up while preserving their biocidal efficacy (mean results of 99.9%, 99.7% and 94.6% against E. coli, S. aureus and TEGV respectively). However, variability increased due to the lower reproducibility of the thermal cycles in industrial roller kilns. In addition, the silver content in the surface of the glaze was maintained after accelerated aging tests, pointing to a good durability of these properties.
控制表面细菌和病毒的生长对对抗传染病至关重要。因此,开发具有杀菌、杀毒作用的瓷砖釉料就显得十分有利。由于瓷砖在建筑行业和城市规划(家庭、医院等)的广泛使用,这些釉料将促进个人和公共卫生。生物杀灭釉料是由含银釉料制成的。这种熔块是用一部分碱性氧化物代替银,并通过熔化和淬火熔体得到的。它的成分允许银融入玻璃体网络。从熔块中获得了用于墙砖和地砖的含银釉,但银的一小部分以金属银颗粒的形式存在。根据ISO 22196:2011/JIS Z 2081/2010和ISO 21702:2019标准验证了釉料对细菌(大肠杆菌、金黄色葡萄球菌)和病毒(TEGV)的抑制作用。在保持杀菌效果的同时,成功扩大了杀菌砖的生产规模(对大肠杆菌、金黄色葡萄球菌和TEGV的平均杀菌效果分别为99.9%、99.7%和94.6%)。然而,由于工业轧辊窑热循环的再现性较低,变异性增加。此外,在加速老化试验后,釉表面的银含量保持不变,表明这些性能具有良好的耐久性。
{"title":"Silver-containing glazes for biocidal ceramic tiles: A resource for inhibiting bacterial and viral growths","authors":"Victor Carnicer, Maria Dolores Palacios, Adriana Belda, Sergio Mestre","doi":"10.1016/j.bsecv.2025.100476","DOIUrl":"10.1016/j.bsecv.2025.100476","url":null,"abstract":"<div><div>Controlling bacterial and viral growth in surfaces is crucial in combating infectious diseases. Therefore, the development of glazes with bactericidal and viricidal effects for ceramic tiles appears highly advantageous. These glazes would facilitate personal and public hygiene due to the widespread use of ceramic tiles in the construction industry and urban planning (homes, hospitals, etc.).</div><div>Biocidal glazes have been developed from a silver containing frit. This frit has been formulated by substitution of a fraction of alkaline oxides for silver and obtained by melting and quenching the melt. Its composition allows the incorporation of the silver into the vitreous network. Silver-containing glazes for wall tiles and floor tiles had been obtained from the frit, but a fraction of the silver was present as metallic silver particles. The inhibitor effect of the glazes against bacteria (<em>Escherichia coli</em> and <em>Staphylococcus aureus</em>) and virus (TEGV) was verified according to ISO 22196:2011/JIS Z 2081/2010 and ISO 21702:2019 standards respectively.</div><div>The production of biocidal tiles was successfully scaled up while preserving their biocidal efficacy (mean results of 99.9%, 99.7% and 94.6% against <em>E. coli</em>, <em>S. aureus</em> and TEGV respectively). However, variability increased due to the lower reproducibility of the thermal cycles in industrial roller kilns. In addition, the silver content in the surface of the glaze was maintained after accelerated aging tests, pointing to a good durability of these properties.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"64 6","pages":"Article 100476"},"PeriodicalIF":2.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145571675","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}
Pub Date : 2025-11-01DOI: 10.1016/j.bsecv.2025.100478
Amador C. Caballero
{"title":"La valorización de residuos en la industria cerámica","authors":"Amador C. Caballero","doi":"10.1016/j.bsecv.2025.100478","DOIUrl":"10.1016/j.bsecv.2025.100478","url":null,"abstract":"","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"64 6","pages":"Article 100478"},"PeriodicalIF":2.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736385","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}
Pub Date : 2025-10-22DOI: 10.1016/j.bsecv.2025.100470
Ashley Bonilla , Alina Pruna , Rut Benavente , María Dolores Salvador , David Busquets-Mataix , Daniel Fernández-González , Amparo Borrell
Given the raising environmental concerns over lead toxicity, replacing the common lead-based piezoelectric ceramics with a proper alternative became a hot topic. (Na0.5K0.5)NbO3 (KNN) is considered a potential replacement for such ceramics. This work presents the synthesis of KNN-type ceramics based on conventional solid-state reaction, where the effect of precursor particle size is studied. A combined mechanical activation by ball milling and calcination at low temperature of 800 °C is applied. The phase structure evolution, morphology and mechanical properties are investigated systematically with the particle size and the calcination rate. The results indicate a marked effect of the precursor particle size on the properties of obtained ceramics. Secondary phase content could be lowered and tetragonality improved by the applied approach. Despite the presence of secondary phases, dielectric measurements indicated typical values of dielectric constant and loss for piezoelectric materials.
{"title":"Effect of calcination rate on mechano-chemically activated powders for the synthesis of lead-free KNN-type ceramics","authors":"Ashley Bonilla , Alina Pruna , Rut Benavente , María Dolores Salvador , David Busquets-Mataix , Daniel Fernández-González , Amparo Borrell","doi":"10.1016/j.bsecv.2025.100470","DOIUrl":"10.1016/j.bsecv.2025.100470","url":null,"abstract":"<div><div>Given the raising environmental concerns over lead toxicity, replacing the common lead-based piezoelectric ceramics with a proper alternative became a hot topic. (Na<sub>0.5</sub>K<sub>0.5</sub>)NbO<sub>3</sub> (KNN) is considered a potential replacement for such ceramics. This work presents the synthesis of KNN-type ceramics based on conventional solid-state reaction, where the effect of precursor particle size is studied. A combined mechanical activation by ball milling and calcination at low temperature of 800<!--> <!-->°C is applied. The phase structure evolution, morphology and mechanical properties are investigated systematically with the particle size and the calcination rate. The results indicate a marked effect of the precursor particle size on the properties of obtained ceramics. Secondary phase content could be lowered and tetragonality improved by the applied approach. Despite the presence of secondary phases, dielectric measurements indicated typical values of dielectric constant and loss for piezoelectric materials.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"64 6","pages":"Article 100470"},"PeriodicalIF":2.7,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145363188","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}
Pub Date : 2025-09-26DOI: 10.1016/j.bsecv.2025.100469
Yu Cao , Yueming Li , Kai Li , Chuanming Zou , Longteng Deng , Jilin Hu , Jin Wen
Ultra-high temperature ceramic materials possess irreplaceable value in extreme environments, among which SiC–ZrC multiphase ceramics have emerged as a research focus due to their exceptional high-temperature performance. The synthesis of high-quality composite powders is pivotal for the fabrication of high-performance ceramics. To address the limitations of conventional carbothermal reduction methods—including impurity contamination from organic carbon sources, inadequate reaction stability, and the paucity of research on the oxidation behavior and biphase synergistic mechanisms of SiC–ZrC composite powders—this study developed a novel controlled carbothermal reduction process using high-purity graphite as the carbon source (argon atmosphere, 1400–1600 °C). Systematic investigations were conducted to elucidate the regulatory effects of calcination temperature on the phase composition, microstructure, and elemental distribution of the powders. Additionally, high-temperature oxidation experiments under air atmosphere were performed to reveal the oxidation behavior characteristics and biphase synergistic mechanisms of the powders. The results demonstrate that high-purity SiC–ZrC composite powders with uniformly distributed elements can be successfully synthesized at 1600 °C with a 1.5-h holding time. During high-temperature oxidation, SiC exhibits significantly superior oxidation resistance compared to ZrC:ZrC initiates oxidation to form ZrO2 as early as 800 °C, while SiC retains excellent structural stability even at 1500 °C. The two phases achieve synergistic oxidation enhancement through the formation of SiO2–ZrO2 composite oxide layers and ZrSiO4 phases.
{"title":"Preparation of SiC–ZrC composite powders by carbothermal reduction method and its high-temperature oxidation resistance performance","authors":"Yu Cao , Yueming Li , Kai Li , Chuanming Zou , Longteng Deng , Jilin Hu , Jin Wen","doi":"10.1016/j.bsecv.2025.100469","DOIUrl":"10.1016/j.bsecv.2025.100469","url":null,"abstract":"<div><div>Ultra-high temperature ceramic materials possess irreplaceable value in extreme environments, among which SiC–ZrC multiphase ceramics have emerged as a research focus due to their exceptional high-temperature performance. The synthesis of high-quality composite powders is pivotal for the fabrication of high-performance ceramics. To address the limitations of conventional carbothermal reduction methods—including impurity contamination from organic carbon sources, inadequate reaction stability, and the paucity of research on the oxidation behavior and biphase synergistic mechanisms of SiC–ZrC composite powders—this study developed a novel controlled carbothermal reduction process using high-purity graphite as the carbon source (argon atmosphere, 1400–1600<!--> <!-->°C). Systematic investigations were conducted to elucidate the regulatory effects of calcination temperature on the phase composition, microstructure, and elemental distribution of the powders. Additionally, high-temperature oxidation experiments under air atmosphere were performed to reveal the oxidation behavior characteristics and biphase synergistic mechanisms of the powders. The results demonstrate that high-purity SiC–ZrC composite powders with uniformly distributed elements can be successfully synthesized at 1600<!--> <!-->°C with a 1.5-h holding time. During high-temperature oxidation, SiC exhibits significantly superior oxidation resistance compared to ZrC:ZrC initiates oxidation to form ZrO<sub>2</sub> as early as 800<!--> <!-->°C, while SiC retains excellent structural stability even at 1500<!--> <!-->°C. The two phases achieve synergistic oxidation enhancement through the formation of SiO<sub>2</sub>–ZrO<sub>2</sub> composite oxide layers and ZrSiO<sub>4</sub> phases.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"64 6","pages":"Article 100469"},"PeriodicalIF":2.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159343","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}
Pub Date : 2025-09-09DOI: 10.1016/j.bsecv.2025.100468
Sonia Marín-Cortés , Julián J. Reinosa , Luis Guaita , Esther Enríquez , José F. Fernández
Annually, construction and demolition waste (CDW) represents one-third of the EU's waste generation. Due to its sheer volume and low-value applications, there is growing interest in its valorisation for new building products. One promising avenue is the incorporation of CDW in recycled ceramic tile production, though this remains largely unexplored at the pre-industrial level. This research examines the viability of pre-industrial-scale production of recycled ceramic tiles with a high content of CDW. CDW materials from a management plant, including ceramic waste (tiles) and mixed debris (construction ceramics and concrete), were processed to create compositions containing up to 10 wt% mixed debris. Virgin clay was added in different proportions, resulting in 55, 70, and 100 wt% CDW compositions. Results show that spray-dried characteristics allow tile production with up to 70 wt% recycled content. The compositions containing 70 and 55 wt% CDW were tested pre-industrially, fired at 1145–1155 °C. The 55 wt% CDW mixture achieves characteristics comparable to those of pre-industrial ceramic tiles, producing novel recycled products with high waste content. These tiles had a flexural strength of >41 N/mm2, surpassing the market standard for porcelain stoneware (35 N/mm2), and water absorption of 12%, meeting wall tile specifications. An economic and environmental assessment highlights the benefits of using CDW in ceramic tiles, highlighting the potential for an environmentally responsible and resource-efficient approach within the tile industry, while minimising environmental impact and preserving natural resources.
{"title":"Pre-industrial production of recycled ceramic tiles using construction and demolition waste: Exploring their technological feasibility","authors":"Sonia Marín-Cortés , Julián J. Reinosa , Luis Guaita , Esther Enríquez , José F. Fernández","doi":"10.1016/j.bsecv.2025.100468","DOIUrl":"10.1016/j.bsecv.2025.100468","url":null,"abstract":"<div><div>Annually, construction and demolition waste (CDW) represents one-third of the EU's waste generation. Due to its sheer volume and low-value applications, there is growing interest in its valorisation for new building products. One promising avenue is the incorporation of CDW in recycled ceramic tile production, though this remains largely unexplored at the pre-industrial level. This research examines the viability of pre-industrial-scale production of recycled ceramic tiles with a high content of CDW. CDW materials from a management plant, including ceramic waste (tiles) and mixed debris (construction ceramics and concrete), were processed to create compositions containing up to 10<!--> <!-->wt% mixed debris. Virgin clay was added in different proportions, resulting in 55, 70, and 100<!--> <!-->wt% CDW compositions. Results show that spray-dried characteristics allow tile production with up to 70<!--> <!-->wt% recycled content. The compositions containing 70 and 55<!--> <!-->wt% CDW were tested pre-industrially, fired at 1145–1155<!--> <!-->°C. The 55<!--> <!-->wt% CDW mixture achieves characteristics comparable to those of pre-industrial ceramic tiles, producing novel recycled products with high waste content. These tiles had a flexural strength of >41<!--> <!-->N/mm<sup>2</sup>, surpassing the market standard for porcelain stoneware (35<!--> <!-->N/mm<sup>2</sup>), and water absorption of 12%, meeting wall tile specifications. An economic and environmental assessment highlights the benefits of using CDW in ceramic tiles, highlighting the potential for an environmentally responsible and resource-efficient approach within the tile industry, while minimising environmental impact and preserving natural resources.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"64 6","pages":"Article 100468"},"PeriodicalIF":2.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021055","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}
Pub Date : 2025-09-01DOI: 10.1016/j.bsecv.2025.100471
Amador C. Caballero
{"title":"Los materiales abren las puertas del futuro","authors":"Amador C. Caballero","doi":"10.1016/j.bsecv.2025.100471","DOIUrl":"10.1016/j.bsecv.2025.100471","url":null,"abstract":"","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"64 5","pages":"Article 100471"},"PeriodicalIF":2.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145424617","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}