Article
Materials Science, Multidisciplinary
Bo Yang, Chun Li, Xiaoqing Si, Zongjing He, Lei Chen, Shuai Su, Junlei Qi, Jian Cao
Summary: A novel strategy using whiskers reinforced borosilicate glasses for joining ZTA ceramics in high-temperature applications was proposed and successfully achieved robust connections. The generation of Al18B4O33 whiskers during the joining process significantly improved the high-temperature strength. The joint showed 84% of its room temperature flexural strength even after thermal cycle testing at 1200 degrees C.
Article
Engineering, Electrical & Electronic
Chengli Sun, Xing Zhou, Fuxia Liang, Hongyu Yang, Dawei Xia, Bin Tang, Shuren Zhang, Mengjiang Xing
Summary: The addition of CBS glass significantly improves the sintering characteristics of LS ceramic for LTCC applications at low temperatures. The LS + 6 wt% CBS system exhibits excellent properties when sintered at 875 degrees C for 2 hours.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Farnaz Heidari Laybidi, Abbas Bahrami, Mohammad Saeid Abbasi, Mojtaba Rajabinezhad, Bahar Heidari Beni, Mohammad Reza Karampoor, S. H. Mousavi Anijdan
Summary: The main objective of this investigation was to study the effects of incorporating zinc oxide nanoparticles into a bioactive glass matrix on the bioactivity and structural properties of the deposited coating. The findings showed that the deposited ZnO-containing bioactive glass had a relatively rough surface texture and exhibited promising cell viability.
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
Materials Science, Ceramics
Julia Lubauer, Renan Belli, Anselm Petschelt, Maria Rita Cicconi, Katrin Hurle, Ulrich Lohbauer
Summary: The crystallization kinetics of two pre-crystallized multicomponent dental glass-ceramics were investigated, showing that the isothermal stage is dominated by the transformation of Li2SiO3 in Li2Si2O5, inducing the impingement of nanocrystals into clusters. The kinetics of toughening closely followed the evolution of crystallinity in both systems.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Po-Hsuen Kuo, Jincheng Du
Summary: This study uses molecular dynamics simulations and a material genome approach to investigate the effects of composition and structure on key properties of bioactive glass coatings, providing valuable insights for future design.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Lina Chen, Tengfei Sun, Zhenbang Hao, Jun Xie, Jihong Zhang, Jianjun Han, Mingzhong Wang, Xiuzhen Cui, Xinhui Liang
Summary: Li2O-MgO-Al2O3-SiO2 glass-ceramics with ultrahigh hardness were prepared by introducing MgO via Li2O substitution. The highest hardness reached 9.34 GPa, much higher than traditional silicate glass-ceramics. Crystal phases and crystal diameters varied with MgO/Li2O ratios and heat-treatment temperatures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Review
Polymer Science
Svyatoslav Nastyshyn, Yuriy Stetsyshyn, Joanna Raczkowska, Yuriy Nastishin, Yuriy Melnyk, Yuriy Panchenko, Andrzej Budkowski
Summary: This review summarizes the fabrication and characterization methods of temperature-responsive polymer brush coatings (TRPBCs), and presents their potential applications, advantages, and disadvantages. Special attention is given to the thermo-responsibility mechanisms of TRPBCs, and their applications in temperature-switchable bacteria killing, temperature-controlled protein adsorption, cell culture, and temperature-controlled adhesion/detachment of cells and tissues are considered. The specific criteria required for desired biomedical applications of TRPBCs are presented and discussed.
Review
Biotechnology & Applied Microbiology
Vinda Puspasari, Aga Ridhova, Angga Hermawan, Muhamad Ikhlasul Amal, Mohammad Mansoob Khan
Summary: Rapid transmission of infectious microorganisms through person-to-person contact has significantly affected global health. Antimicrobial coating, particularly zinc oxide (ZnO) nanostructure-based coatings, provide a promising solution to prevent the growth and transmission of disease-causing microorganisms. ZnO coatings offer non-invasive, low-cost, easy-to-use, side-effect-free, and environmentally friendly options, making them highly suitable for various applications in medical devices and healthcare facilities. Challenges and future clinical practices of ZnO-based antibacterial coatings are also discussed.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2022)
Article
Materials Science, Ceramics
Kara K. Poon, Stefan Schaffoner, Mari-Ann Einarsrud, Julia Glaum
Summary: The study investigates the synthesis of bilayer BCZT and CaTiO3 ceramic coatings on Ti6Al4V metal substrates through spray-deposition and heat-treatment. It was found that reactions at the metal/ceramic interface can lead to the development of a porous interface reaction region partly consisting of CaO, affecting the adhesion of the coating to Ti6Al4V under ambient conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Review
Chemistry, Physical
Robert B. Heimann
Summary: Silicon nitride ceramics excel in mechanical, thermal, and chemical properties, making them suitable for applications in various technically challenging fields. Recent research has also made silicon nitride suitable for biomedical applications.
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
Materials Science, Ceramics
Le Fu, Bohan Wang, Yabin Zhu, Tielong Shen, Ying Deng, Guofu Xu, Jiwu Huang, Yucheng Feng, Liangting Sun, Wei Xia
Summary: Developing radiation-resistant materials and understanding structural damage caused by radiation are important goals for material scientists. In this study, ZrO2-SiO2 nanocrystalline glass-ceramics were irradiated with 1.4 MeV He ions at different fluences, and the resulting structural integrity and damage were investigated. The results showed that microstrain from the irradiation induced a phase transformation in the ZrO2 crystals, while the addition of yttrium stabilized the tetragonal-ZrO2 phase. Raman spectroscopy indicated changes in the electronic structure of the amorphous SiO2 component, and microscopy revealed the formation of microcracks and lattice defects as the main structural damage.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Aleksandr Ketov, Vladimir Korotaev, Larisa Rudakova, Iakov Vaisman, Luisa Barbieri, Isabella Lancellotti
Summary: This paper presents a green manufacturing solution for foam or cellular ceramics by utilizing waste materials to create lightweight ceramics with added value. This not only reduces waste disposal costs but also transforms waste into an alternative raw material.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Xinyue Zhang, Jing Wang, Jianjun Han
Summary: Transparent glass-ceramics were prepared using a three-stage heat treatment process in the SiO2-Li2O-Na2O-Al2O3-BaO-P2O5-ZrO2 system. The effect of Al2O3 content on the crystallization behavior, microstructure, and physical properties of the glass-ceramics was investigated. It was found that increasing Al2O3 content led to a more compact structure of the glass and hindered the formation of lithium disilicate while promoting the precipitation of Al-containing crystalline phases. The glass-ceramic with 4 mol% Al2O3 showed high transparency, hardness, and fracture toughness, making it suitable for protective material applications in mobile devices.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Kenneth Kane, Eugenio Garcia, Padraig Stack, Michael Lance, Cory Parker, Sanjay Sampath, Bruce A. Pint
Summary: The study shows that EBCs have a certain effect on reducing the rate of SiO2 formation, especially when paired with a Si bond coating. The adhesion of the coating and roughness of the substrate play a crucial role in the effectiveness of EBCs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
E. I. Cedillo-Gonzalez, M. Governatori, C. Ferrari, C. Siligardi
Summary: Digital ink-jet printing can be used to produce solar reflective ceramic tiles, which help mitigate the Urban Heat Island phenomenon. Through testing, it was found that using engobe with high solar reflectance and specific color combinations can achieve this goal, with the grayscale modality allowing for the preparation of tiles with good solar reflective properties using a smaller quantity of inks.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Caterina Sgarlata, Alessandra Formia, Cristina Siligardi, Francesco Ferrari, Cristina Leonelli
Summary: The study focused on the influence of high temperature treatment of clay by-products on the microstructure of geopolymers, showing that properly calcined clay can lead to AAMs with good chemical stability and dense microstructure.
Review
Chemistry, Physical
Valeria Cannillo, Roberta Salvatori, Stefania Bergamini, Devis Bellucci, Carlo Bertoldi
Summary: This review focuses on the applications of bioactive glasses in periodontal regeneration. Although there are numerous in vitro tests, only a few studies have been conducted on in vivo research and clinical trials. Nonetheless, bioactive glasses appear to be a suitable choice for grafts in periodontal regeneration.
Article
Materials Science, Ceramics
Damiano Angioni, Roberto Orru, Giacomo Cao, Sebastiano Garroni, Devis Bellucci, Valeria Cannillo
Summary: In this study, hydroxyapatite and a lab-made bioactive glass were mixed in certain proportion and subjected to ball milling treatment. The effect of ball milling time on the characteristics of the resulting products was investigated. The results showed that using a 30-minute ball milling mixture significantly improved the apatite-forming ability and resulted in higher Young's Modulus and Vickers Hardness. The microstructural changes induced by ball milling and the formation of intimate HA/BGMS10 interfaces were the main factors responsible for these improvements.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Andrea Martelli, Paolo Erani, Nicola Pazzagli, Valeria Cannillo, Massimiliano Baleani
Summary: This study evaluated the damage occurring on the Ti-alloy micro-grooved 12/14 tapers of different groups of implants with non-sleeved and sleeved ceramic heads. The results show that using a sleeved ceramic head can reduce the risk of mechanically assisted crevice corrosion and does not increase the risk of revision surgery.
Article
Engineering, Biomedical
A. Anesi, M. Ferretti, R. Salvatori, D. Bellucci, F. Cavani, M. Di Bartolomeo, C. Palumbo, V. Cannillo
Summary: Bioactive glasses (BGs) have shown great potential as materials for tissue regeneration, and two new BGs, BGMS10 and Bio_MS, demonstrated promising results in animal implantation tests. These BGs, containing therapeutic ions, were found to be biocompatible and capable of promoting the formation of uniformly distributed bone trabeculae in the implanted site. In contrast, the comparison standard 45S5 Bioglass (R) showed less uniform and coarse trabeculae, separated by soft tissue. Therefore, BGMS10 and Bio_MS could be considered suitable for tissue regeneration in orthopedic and dental fields.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2023)
Article
Materials Science, Multidisciplinary
Alessandro Chiari, Sara Mantovani, Andrea Berzaghi, Devis Bellucci, Sergio Bortolini, Valeria Cannillo
Summary: In this study, a new model for reliable testing of three-units monolithic fixed dental prostheses (FDPs) was proposed, which is based on a novel design of the polymeric base realized via additive manufacturing. Three different analyses including analytical, numerical and experimental methods were conducted to thoroughly test the load-bearing capability of the FDPs. The findings demonstrated the advantages of the new base configuration in minimizing the stress state of the connectors and improving the repeatability and reliability of the experimental bending tests.
MATERIALS & DESIGN
(2023)
Review
Polymer Science
Andrea Martelli, Devis Bellucci, Valeria Cannillo
Summary: Tissue engineering is a promising field in regenerative medicine that utilizes synthetic grafts like scaffolds to regenerate damaged tissues. Polymers and bioactive glasses are popular materials for scaffold production due to their adjustable properties and interaction with the body. Additive manufacturing is a promising method for producing scaffolds, but challenges remain in tailoring mechanical properties and achieving controlled degradation for successful tissue regeneration. This review summarizes the potential and limitations of using additive manufacturing techniques for polymer/bioactive glass scaffold production and emphasizes the importance of addressing current challenges in tissue engineering for reliable strategies.
Article
Chemistry, Multidisciplinary
Caterina Sgarlata, Maria Camila Ariza-Tarazona, Enrico Paradisi, Cristina Siligardi, Isabella Lancellotti
Summary: The aim of this research was to evaluate the possibility of reusing waste foundry sands as a secondary raw material for the production of building materials. Ceramic samples and geopolymers were produced by replacing standard sand with different percentages of waste foundry sand. The results showed that up to 50% of foundry sand can be added without significantly affecting the properties of ceramic materials, while geopolymers achieved acceptable chemical stability and mechanical strength with 30% replacement of metakaolin with foundry sand.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Erika Iveth Cedillo-Gonzalez, Paolo Chierici, Marta Buttazzo, Cristina Siligardi, Elisabetta Blasi, Andrea Ardizzoni
Summary: Keeping surfaces clean can reduce the spread of infections, particularly for SARS CoV-2. Antimicrobial glazed stoneware tiles are available on the market, but replacing existing ceramic surfaces may be impractical due to durability and cost. Sanitization procedures using chemo-mechanical methods proved to be the most effective, especially on stoneware tiles with glassy glaze.
MATERIALS TODAY COMMUNICATIONS
(2023)
Review
Chemistry, Physical
Francesco Gerardo Mecca, Devis Bellucci, Valeria Cannillo
Summary: In this paper, the influence of different ions on the sintering and crystallization of bioactive glasses (BGs) is reviewed, with a focus on the thermal treatments and ion substitution method to improve the thermal and mechanical properties of BGs. Potential applications of thermally treated BGs, such as scaffolds, BG-based composites, and thermally sprayed coatings, are explored. However, further research is needed to fully understand the effects of different ions on sintering and crystallization in BGs.
Article
Chemistry, Multidisciplinary
Giuliana Taglieri, Valeria Daniele, Valentina Maurizio, Gabriel Merlin, Cristina Siligardi, Marie Capron, Claudia Mondelli
Summary: This study presents an original and sustainable method for producing zinc oxide nanoparticles at room temperature, which saves time and energy and produces no toxic waste. The method is based on an ion exchange process and allows for the production of high purity and crystalline zinc oxide nanoparticles in a short period of time.
Article
Materials Science, Ceramics
Beatrice Malchiodi, Riccardo Pelaccia, Paolo Pozzi, Cristina Siligardi
Summary: Fiber-reinforced concrete (FRC) is being used to increase toughness and limit crack propagation in construction, and polypropylene (PP) fibers are being explored as a cost-effective and corrosion-resistant alternative to steel fibers in FRC. This study introduces sustainable, cost-efficient, and fast surface treatments, such as UV-LED, picosecond UV-LASER, and corona discharge treatment, to increase the hydrophilicity of PP. The effectiveness of these treatments in enhancing adhesion with the cementitious matrix was confirmed through spectroscopy and contact angle measurements.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Damiano Angioni, Roberto Orru, Giacomo Cao, Sebastiano Garroni, Devis Bellucci, Valeria Cannillo
Summary: New Hydroxyapatite-Bioactive Glass composites were successfully developed in this study using different milling times to modify the properties and crystal structure of the materials. Ball milling promoted the consolidation of HA powders and reduced the crystallite size. Spark Plasma Sintering process changed the crystal structure and composition of the composites, affecting the mechanical properties. Moreover, the milling treatment showed no negative effects on cell viability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)