Article
Polymer Science
Anda Barkane, Oskars Platnieks, Maksims Jurinovs, Sigita Kasetaite, Jolita Ostrauskaite, Sergejs Gaidukovs, Youssef Habibi
Summary: In order to meet the demand for sustainability, some vegetable oils can be modified for use in UV-assisted additive manufacturing technologies. Optimizing formulation conditions can significantly improve the photopolymerization performance and thermal-mechanical properties of the resin.
Article
Engineering, Manufacturing
Sergey Nechausov, Anna Ivanchenko, Oleg Morozov, Aslan Miriyev, Indrek Must, Oskars Platnieks, Maksims Jurinovs, Sergejs Gaidukovs, Alvo Aabloo, Mirko Kovac, Boris Bulgakov
Summary: This study investigates the effect of adding ionic liquids (ILs) on the vat photopolymerization (VP) process for the fabrication of ionogels (IGs). The results show that ILs can accelerate the polymerization reaction and increase the critical exposure energy for gelation. The study also demonstrates the changing penetration depth with different IL types and the impact of dual curing on the mechanical properties and ionic conductivity of the ionogels.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Kehui Hu, Pengcheng Zhao, Jianjun Li, Zhigang Lu
Summary: This paper proposes a novel multiceramic additive manufacturing technology based on digital light processing, which achieves high precision and defect-free printing of multiceramic components through the cyclic process of coating, exposure, cleaning, and drying.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Megane Bernard, Vincent Pateloup, Damien Passerieux, Dominique Cros, Valerie Madrangeas, Thierry Chartier
Summary: Additive manufacturing technology enables the production of complex 3D parts. A hybrid additive machine has been developed to manufacture ceramic/metal parts, and the co-debinding and co-sintering cycles have been optimized for quality assurance. However, the lack of dimensional accuracy in the metallic network leads to deviations in frequency responses compared to simulations.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Manufacturing
Ivan Karlo Cingesar, Marijan-Pere Markovic, Domagoj Vrsaljko
Summary: Additive manufacturing allows for simple and cost-effective production of customizable 3D-components. This study investigates the influence of 3D-printing settings, post-processing conditions, and the size and shape of test samples on the mechanical, thermal, and physico-chemical properties. The findings highlight the importance of printing angle and layer thickness in determining tensile strength.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Fen Chen, Ya-Ru Wu, Jia-Min Wu, Hao Zhu, Shuang Chen, Shuai-Bin Hua, Zi-Xuan He, Chang-Yu Liu, Jun Xiao, Yu-Sheng Shi
Summary: This study prepared ZrO2-Al2O3 bioceramics using SL technology, showing excellent mechanical properties and biocompatibility suitable for all-ceramic restorations, with great application prospects in dental field.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Multidisciplinary
Nicole Kleger, Simona Fehlmann, Seunghun S. Lee, Cyril Denereaz, Martina Cihova, Nevena Paunovic, Yinyin Bao, Jean-Christophe Leroux, Stephen J. Ferguson, Kunal Masania, Andre R. Studart
Summary: This article reports a universal manufacturing platform that utilizes photocurable resins and printed salt structures as leachable molds to shape materials into complex geometries. Through systematic investigation of the printing, debinding, and sintering steps, suitable ink formulations for crack-free salt templates are identified. By infiltrating the sintered molds and leaching the templates, complex-shaped architectures are created from various compositions.
ADVANCED MATERIALS
(2022)
Article
Engineering, Manufacturing
Roozbeh Salajeghe, Daniel Helmuth Meile, Carl Sander Kruse, Deepak Marla, Jon Spangenberg
Summary: Volumetric additive manufacturing can suffer from premature sedimentation during printing, affecting geometric fidelity and limiting its applicability. A numerical model was developed to investigate the effect of material properties and process parameters on sedimentation. The model elucidated the role of resin viscosity, cross-section ratio, curing time, and container rotation velocity on sedimentation, as well as the impact of final density and viscosity of the curing material.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Multidisciplinary
Kerr D. G. Samson, Veronica Hidalgo-Alvarez, Tim R. Dargaville, Ferry P. W. Melchels
Summary: Vat polymerization enables accurate and fast fabrication of personalized implants and devices. However, finding flexible and tough resorbable materials for biomedical applications remains a challenge. This study presents a formulation that can be 3D printed with high accuracy using vat polymerization, resulting in tough, degradable, and non-toxic materials. By tuning the ratio of components, a wide range of properties can be achieved. The use of benzyl alcohol as a solvent allows for low-cost desktop 3D printing, with good cell attachment and proliferation. This new 3D printable material opens up opportunities in biomedical engineering and personalized medicine.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Manufacturing
Wenxuan Jia, Yuen-Shan Leung, Huachao Mao, Han Xu, Chi Zhou, Yong Chen
Summary: This paper studies a hybrid-light-source stereolithography process that integrates two optical light sources to fabricate macro-objects with microscale surface structures. By using a novel calibration approach and a specific software system, high throughput fabrication of large areas with micro-features can be achieved.
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2022)
Article
Materials Science, Multidisciplinary
Erik Kornfellner, Markus Koenigshofer, Ewald Unger, Francesco Moscato
Summary: This study aims to predict the Young's modulus of specimens manufactured by combining multiple materials using digital light processing (DLP) and investigate the effects of the printing process on the geometry and mechanical properties of these 3D-printed multimaterials. The results show that the mixed materials fit well with the linear interpolation approach for predicting elastic properties. For as-printed samples, the mixed materials showed a stiffer behavior than the linear interpolation prediction. Additionally, the study analyzed the geometrical deviations in the printed specimens.
FRONTIERS IN MATERIALS
(2023)
Article
Engineering, Manufacturing
Venkatakrishnan Rengarajan, Angela Clyde, Jefferson Pontsler, Jonathan Valiente, Adreann Peel, Yu Huang
Summary: This study evaluated the cytotoxicity of leachable toxins introduced into final products during the 3D printing process and reduced their toxicity through three treatment methods. The results showed that all 3D-printed materials were toxic to cells in a leachable manner, with flexible materials being more toxic than rigid materials. The Soxhlet solvent extraction method was the most effective in removing the leachable toxins and eliminating the material's toxicity.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Maksims Jurinovs, Anda Barkane, Oskars Platnieks, Sergejs Beluns, Liga Grase, Reiner Dieden, Mariapaola Staropoli, Daniel F. Schmidt, Sergejs Gaidukovs
Summary: With the progress of additive manufacturing and the widespread use of 3D printing technology, it is important to focus on environmentally and economically sustainable materials. This study utilizes vegetable oil-based resins with a low concentration of nanocellulose fibrils and crystals for vat photopolymerization 3D printing. The addition of nanocellulose improves the shelf stability and mechanical performance of the printed specimens. The prepared bio-based resins show promise in competing with petroleum-based resins.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Jordan T. Sutton, Kalavathy Rajan, David P. Harper, Stephen C. Chmely
Summary: Chemical modification techniques can reduce UV absorption by lignin, leading to improved stiffness and strength in resins when modified lignins are used. However, the thermal stability decreases. Studying these techniques is important for the development of lignin for UV-curing applications and commercial use.
Article
Polymer Science
Manuel Romeis, Dietmar Drummer
Summary: In this research, a dual-cure system based on epoxy resin was developed for SLA additive manufacturing. By combining UV curing and thermal curing, the material achieved superior thermal and mechanical properties. Experimental results demonstrated significant improvement in tensile stress and glass transition temperature as epoxy concentrations increased.
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)