Article
Materials Science, Ceramics
Xiaokun Tian, Anjian Li, Sheng Li, Xingtao Wang, Ya Qu, Fengyang Zhao, Yanchao Xu, Yunlong Yue, Junfeng Kang
Summary: The SiO2/Al2O3 molar ratio has a significant influence on the crystallization behavior, microstructure, mechanical properties and machinability of glass-ceramics. Increasing the S/A ratio reduces the polymerization degree of the glass network, changes the morphology of crystals from lamellar to granular, and reduces the crystal size. Higher S/A ratio results in higher Vickers-Hardness values and stable bending strength within a certain range.
CERAMICS INTERNATIONAL
(2022)
Article
Green & Sustainable Science & Technology
Yunpeng Liu, Wenhao Wan, Jian-Xin Lu, Chi Sun Poon, Shuguang Hu, Fazhou Wang
Summary: This study investigated the effects of two types of waste glasses on the performance of glass-ceramic artificial aggregates (AAs) to determine their contribution to the crystallization processes. The results showed that introducing glass facilitated crystallization by providing amorphous materials and fluxing components to reduce liquid viscosity. The properties of SiO2 and liquid viscosity significantly influenced the crystallization mechanism of the AAs.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Ceramics
Ye Luo, Conghang Qu, John C. Mauro
Summary: This study introduces a new type of transparent lithium aluminosilicate glass-ceramics with favorable mechanical properties and potential applications. The crystalline phases are mainly influenced by the ratio of alumina and silica concentrations, and not lithium oxide. The glass-ceramics exhibit high transmittance in the visible light range and improved hardness and crack resistance compared to standard glass.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Construction & Building Technology
Georgia Flesoura, Patricia R. Monich, Roberto Murillo Alarcon, Daniele Desideri, Enrico Bernardo, Jef Vleugels, Yiannis Pontikes
Summary: Innovative building materials with low environmental impact and high performance have been developed using municipal waste incinerator bottom ash. By vitrifying and mechanically stirring the bottom ash, highly porous glass ceramics with compressive strength comparable to lightweight construction materials were obtained. The materials also showed potential for use as a semiconductor catalyst.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Ceramics
Wang Xingtao, Tian Xiaokun, Peng Xiaojin, Sun Chuanxiang, Qu Ya, Yue Yunlong, Kang Junfeng
Summary: Mica-Diopside based glass-ceramics were synthesized from granite wastes through melting method. The effects of SiO2/MgO (S/M) molar ratios on crystallization behavior, microstructure, and mechanical characteristics of the glass-ceramics were investigated. The results showed that increasing S/M ratio led to an increase in glass transition temperature (T-g). With higher heat treatment temperature, the formation of Forsterite was facilitated. Diopside became the main crystal phase instead of Forsterite with increasing S/M ratio at 850°C and 900°C, accompanied by Tainiolite as the minor phase. The crystallinity of glass-ceramics decreased with increasing S/M ratio at 900°C. The presence of columnar crystals interleaving with granular crystals and reduced crystal size were observed. Vickers-hardness decreased dramatically with increasing S/M ratio after heating at 900°C, while fracture toughness initially increased and then decreased, reaching the highest value of 1.97 MPa·m(1/2) at an S/M ratio of 2.82.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Engineering, Electrical & Electronic
Xingyu Chen, Fenglin Wang, Yeqing Guan, Xuelian Zhu, Jiawen Shi, Haijun Mao, Wei Li, Weijun Zhang
Summary: This study investigated low-temperature sinterable and low-loss composites consisting of La2O3-B2O3-ZnO glass-ceramics and Al2O3 filler. The phase composition of the composites was closely related to the sintering temperature, with high crystalline phases indicating low content of residual glassy phases and low loss at high frequencies. The best properties were exhibited by the composite of LBZ glass-ceramic with 50 wt% Al2O3 sintered at 900 degrees C, with low permittivity and dielectric loss, making it suitable for high-frequency LTCC substrate materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Olga Dymshits, Elena Gorokhova, Irina Alekseeva, Valery Golubkov, Michael Shepilov, Alexander Khubetsov, Marina Tsenter, Daria Shemchuk, Anastasiya Bachina, Anna Volokitina, Lisa Basyrova, Michail Baranov, Eugenia Oreschenko, Xavier Mateos, Pavel Loiko, Aleksandr Zhilin
Summary: This study compares the structure of ZnO-based transparent glass-ceramics and optical ceramics doped with rare-earth and transition metal ions. In glasses, structural inhomogeneity is formed during the casting process, while in optical ceramics, the rare-earth ions are located on the surface of ZnO crystals. These materials are multiphase.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Multidisciplinary
Guanxin Du, Shaofei Wen, Junjie Zhao, Peng Ran, Dazhao Wang, Lei Wei, Xvsheng Qiao, Yang Yang, Jianrong Qiu, Shifeng Zhou
Summary: A mild strategy for constructing dual-phase optical ceramics with high crystallinity based on the stepped dual-phase crystallization of hybridized aluminosilicate glass is presented. Transparent ceramics with various chemical compositions and phase combinations can be prepared using this method, and the shape of the ceramic fibers can be easily adjusted. The practical applications of optical ceramics for lighting and X-ray imaging are demonstrated, indicating the potential of this research.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Baoqing Li, Yanping Guo, Jianzhang Fang
Summary: Glass-ceramics prepared from fly ash, screen glass, and ceramic polishing slag showed excellent performance with MgO addition, demonstrating good environmental compatibility. The immobilization of heavy metals in the as-prepared glass-ceramics was effective during the preparation process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Leonardo Sant'Ana Gallo, Fabrice Celarie, Jefferson Bettini, Ana Candida M. D. Rodrigues, Tanguy Rouxel, Edgar D. Zanotto
Summary: In this study, transparent glass-ceramics with high hardness and fracture toughness were obtained through a refined heat-treatment protocol. The mechanical properties, including fracture toughness and hardness, were characterized and compared with the parent glass.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Multidisciplinary
Alexander Karamanov
Summary: Hazardous residues from ferronickel production can be vitrified and converted into glass-ceramics through a short and inexpensive thermal treatment. The crystallization process in these glass-ceramics is peculiar due to the presence of chromium oxides, iron, and magnesium oxides. The resulting glass-ceramic exhibits optimal mechanical characteristics despite the large amounts of problematic wastes used in the process.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Ping Zhang, Zhiwei Luo, Songxuan Liu, Weicheng Lei, Haozhang Liang, Ziyou Zhou, Anxian Lu
Summary: Glass-ceramics with different Ga/Zn molar ratios have been prepared and studied for their crystallization kinetics, crystal structure, and fluorescence properties. The ZnGa2O4 glass-ceramics can emit fluorescence in the range of 350-650 nm and are suitable for blue light display devices.
Article
Materials Science, Ceramics
H. A. Abo-Mosallam, Ebrahim A. Mandy
Summary: The study focused on the synthesis, crystallization, thermal, and magnetic properties of glass-ceramics based on ZnO-SrO-B2O3-Fe2O3-P2O5 glasses. The replacement of SrO for ZnO led to improved magnetic parameters and density values of the glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Gamal A. Khater, Amany A. El-Kheshen, Mohammad M. Farag
Summary: This article investigates the preparation of glass-ceramic samples using industrial waste by-pass cement dust and natural materials. The synthesized samples were analyzed using various techniques, revealing the formation of different phases and changes in microstructure and thermal expansion coefficients. The research demonstrates the potential utilization of industrial waste to produce functional materials.
Article
Materials Science, Ceramics
Wei Yu, Shengshuo Cao, Jing Wang, Zhanmeng Zhang, Jianjun Han, Chao Liu, Jian Ruan
Summary: Cordierite glass-ceramics usually crystallize from the surface, and different nucleating agents can affect the crystallization behavior. The heat treatment process plays a crucial role in determining the final properties of the glass-ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Estefania Montoya-Quesada, Monica A. Villaquiran-Caicedo, Ruby Mejia de Gutierrez
Summary: The aim of this research was to evaluate the production of glass ceramics using a combination of fly ash, glass cullet, blast furnace slag, and copper slag solid wastes. The study found that samples with a high Fe2O3 content were not suitable for glass-ceramic formation. The ceramic materials developed in this research exhibited good mechanical properties and corrosion resistance, making them suitable for various applications.
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2022)
Article
Environmental Sciences
Erick Hernandez-Rengifo, Monica A. Villaquiran-Caicedo, Ruby Mejia de Gutierrez
Summary: This study investigated the use of discarded industrial abrasives for the manufacture of geopolymer-matrix composites. The results showed that the microstructure of the geopolymer paste is reorganized after exposure to high temperatures, leading to increased compressive strength. However, the mechanical strength of the composites decreased after exposure to high temperatures, with the presence of cracking and porosity.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Ashley Bonilla, Monica A. Villaquiran-Caicedo, Ruby Mejia de Gutierrez
Summary: Novel hybrid-cement materials were prepared by mechanically conditioning ceramic tile wastes with Portland cement and alkaline activators. The addition of nanoparticles resulted in enhanced photocatalytic and bactericidal properties.
Review
Construction & Building Technology
Rafael Robayo-Salazar, Ruby Mejia de Gutierrez, Monica A. Villaquiran-Caicedo, Silvio Delvasto Arjona
Summary: This review article discusses the advantages and opportunities of additive manufacturing in the construction sector, focusing on the design methodology and required properties of cementitious material mixes suitable for 3D printing. It examines traditional materials based on Ordinary Portland Cement (OPC) and non-conventional ones such as alkali-activated materials (geopolymers). While additive manufacturing has found interesting projects in the United States, Europe, and Asia, its adoption is still in the experimental phase in Latin America. However, promising developments and research in countries like Mexico, Brazil, Chile, Colombia, Guatemala, and Peru suggest that 3D printing will become an industrial reality in the near future. This paper presents the main challenges and opportunities in implementing additive manufacturing.
AUTOMATION IN CONSTRUCTION
(2023)
Article
Construction & Building Technology
Laura M. Henao Rios, Andry F. Hoyos Trivino, Monica A. Villaquiran-Caicedo, Ruby Mejia de Gutierrez
Summary: The environmental impact of CDW, which accounts for nearly half of the solid wastes sent to landfills, is significant. Glass wastes, although 100% recyclable, have a low recycling rate in the United States compared to Europe. This research evaluates the use of waste glass in geopolymers and finds that the strength of the resulting materials depends on the type of activator and the percentage of glass used.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Ceramics
J. A. Hermann-Munoz, J. A. Rincon-Lopez, R. Detschb, J. M. Alvarado-Orozco, J. Munoz-Saldana, A. R. Boccaccini
Summary: The feasibility of using (Na0.5Bi0.5)TiO3 dense ceramics as a potential biomaterial for bone repair was studied. The effect of poling direction on the osteogenic properties of (Na0.5Bi0.5)TiO3 ceramics was assessed and it was found that the negative side showed enhanced osteo-conductivity and antibacterial properties compared to the non-poled, positive side. Tunable (Na0.5Bi0.5)TiO3 ceramics have potential for bone repair applications.
CERAMICS INTERNATIONAL
(2023)
Article
Automation & Control Systems
Maricruz Hernandez-Hernandez, Rodrigo Gonzalez-Mejia, Victor Hugo Mercado-Lemus, Adriana Gallegos-Melgar, Isabel Pereyra, Juan Munoz-Saldana, Jan Mayen
Summary: Descriptive and inferential statistics were used to analyze data from the LPCS process, studying the relationship between process input variables (nozzle type, standoff distance, and particle velocity) and the output variables (coating porosity, thickness, and deposition efficiency). It was found that the nozzle type had the greatest impact on the final coating properties, with the rectangular nozzle leading to higher particle rebound and increased porosity. The round nozzle was recommended for obtaining coatings with low porosity levels, independent of the standoff distance.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Construction & Building Technology
Monica A. Villaquiran-Caicedo, Alejandro Fernandez-Gonzalez, Daniel A. Fernandez-Garcia, Ruby Mejia de Gutierrez
Summary: This paper investigates the potential of coal ash-based alkali-activated materials (AAM) for additive manufacturing (AM), utilizing coal ash traditionally disposed of in landfills. The study evaluates the impact of mineral additives like metakaolin, CaCO3, and glass residues on AAM. Various tests are conducted to analyze the fresh stage properties, microstructure, and mechanical strength of the casted and printed AAM. The experimental results demonstrate that AAM prepared with alkali activators based on NaOH/Na-sulfate solutions possess the best characteristics for printing.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Carolina Hernandez-Navarro, Sebastian Perez, Elizabeth Florez, Nancy Acelas, Juan Munoz-Saldana
Summary: Currently, the large volumes of Sargassum biomass (Sgs) arriving on Caribbean coasts are a problem that must be solved quickly. One alternative is to obtain value-added products from Sgs. In this work, Sgs is demonstrated to be a high-performance Ca -bioadsorbent for phosphate removal by a heat pretreatment at 800 degrees C that produces biochar. The calcined Sgs (CSgs) have a composition of 43.68%, 40.51%, and 8.69% of Ca (OH)2, CaCO3, and CaO, making CSgs a promising material for phosphate removal and recovery.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Materials Science, Coatings & Films
A. I. Gutierrez-Perez, M. T. Ayala-Ayala, A. G. Mora-Garcia, C. Hernandez-Navarro, S. Perez, J. A. Diaz-Real, J. Gonzalez Hernandez, J. Munoz-Saldana
Summary: Visible-light photoactive (Na0.5Bi0.5)TiO3 (NBT)-based heterojunctions have shown potential in environmental remediation. This study investigates the photocatalytic properties of NBT-based coatings deposited by oxyacetylene flame spray (FS) and analyzes the influence of spraying parameters on the physicochemical properties. The results demonstrate the ability of the FS methodology to produce multiphase photocatalytic coatings.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
E. Prokhorov, G. Luna-Barcenas, J. M. Yanez Limon, J. Munoz Saldana
Summary: This work investigates the properties of PVASrTiO3 nanocomposite films by varying the concentration of SrTiO3 nanoparticles. The study reveals that the piezoelectric coefficient, dielectric constant, elastic modulus, and hardness strongly depend on nanoparticle concentration due to the formation of an interface layer between PVA matrix and SrTiO3. The apparent piezoelectric coefficient is proposed to be related to the converse flexoelectric effect and Maxwell stress induced by an electric field. The fine-tuning of the interface layer with functionalized nanoparticles results in a high apparent piezoelectric coefficient.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Coatings & Films
Ivan F. Bedoya-Trujillo, Sebastian Perez, Cynthia Y. Guijosa-Garcia, Marco A. Rivera-Gil, Ravisankar Naraparaju, Juan Zarate-Medina, Juan Munoz-Saldana
Summary: The effects of ingestion of airborne particles from volcanic eruptions by aircraft turbines and their reaction with thermal barrier coatings have been studied. The reaction products of infiltration experiments of LGZO ceramics with molten ashes from the active Colima volcano were analyzed as a function of Gd3+ content. The results show that the composition of the reaction layers depends on the gadolinium content, and the amount of rare earth cations dissolved in the melt plays an important role in the precipitation of the reaction products.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Mechanical
A. Hernandez-Pena, E. A. Gallardo-Hernandez, L. I. Farfan-Cabrera, M. Vite-Torres, J. Munoz-Saldana
Summary: Solid particle erosion (SPE) is a critical issue causing damage to automotive paint coatings. Correct characterization and resistance against SPE can prolong coating lifespan and increase car resale value. However, there is still a need for more understanding of wear progress under different environmental degradation conditions.
Article
Metallurgy & Metallurgical Engineering
Melquisedec Vicente-Mendoza, Alma Mora-Garcia, Juan Munoz-Saldana, Fernando Juarez-Lopez
Summary: The spray parameters were fixed for depositing an MCrAlY coating on an IN-708 substrate using the HVOF process. The deposited coatings exhibited a microstructure with characteristic splats and β and γ phases. A subsequent MOCVD process was conducted to deposit a thin alumina layer on the sprayed MCrAlY coating. Cyclic oxidation tests were performed at high temperature on the alumina/MCrAlY coating system, and SEM and XRD analyses were used for characterization.
HIGH TEMPERATURE CORROSION OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Marco Leon, Domenica Alvarez, Alfredo Valarezo, Lorena Bejarano, Daniela Viteri, Astrid L. Giraldo-Betancur, Juan Munoz-Saldana, Jose Alvarez-Barreto
Summary: This study investigates the effects of different electrodeposition variables on chitosan coatings on Ti-6Al-4V substrates. The results show that longer times and high chitosan concentrations in electrodeposited coatings produce porous coatings with better surface adhesion. Swelling tests indicate the need for a crosslinking agent to improve coating stability.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2022)
