Article
Engineering, Manufacturing
Feng Wang, Chenchen Liu, Haotian Yang, Hao Wang, Han Zhang, Xinxi Zeng, Cong Wang, Weizhe Zhang, Wenjing Lv, Pengfei Zhu, Bo Li
Summary: By utilizing the stress mismatch in sintering of printed ceramics, 4D printing of ceramic structures is achieved. Different solid contents of ceramic inks are used to induce shrinkage mismatch and shape-changing behavior after sintering. The shape-morphing characteristics of the ceramic structures can be tailored by routing the printing process. Various characteristics of 4D-printed ceramic flowers are achieved by programming the solid content of ceramic inks and printing paths.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Multidisciplinary
Joao Vasconcelos, Manuel Sardinha, Carlos M. S. Vicente, Luis Reis
Summary: This research proposes the adaptation of the iro3d selective powder deposition process to produce glass-ceramic parts using recycled glass powders. Various deposition strategies were used to produce specimens and evaluate their geometric distortions and mechanical performance. The addition of sand was found to mitigate distortions. The results demonstrate the potential of the iro3d SPD process for additively manufacturing glass parts.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Ceramics
Zhigang Zhang, Yukun Wang, Guoyin Zu, Zhuokun Cao, Jinli Liu, Chao Wang
Summary: In this study, NiFe2O4-based ceramic inert anodes doped with TiN nanoparticles were prepared to investigate the sintering behavior and properties of the composites. The results showed that the addition of TiN nanoparticles improved the sintering performance and stabilized the microstructure of the ceramics.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Xinfeng Wang, Bin Zou, Lei Li, Hongyu Xing, Chuanzhen Huang, Yishun Wang, Zhenyu Shi, Jikai Liu, Peng Yao, Kai Xue
Summary: This study utilized additive and subtractive technologies to prepare ceramic groove parts, proposing a model based on shrinkage compensation and micro-milling to improve dimensional accuracy. Additionally, the effectiveness of the proposed dimensional accuracy control method was verified through investigating micro-chipping on machined edges of the workpiece.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ying Qiang Jia, Wen Bin Hong, Lei Li, Shu Ya Wu, Bing Liu, Xiang Ming Chen
Summary: In this study, dense LiF ceramics were prepared using room-temperature cold sintering. The increase in compacting pressure and relative density greatly improved the relative density, microstructural homogeneity, and microwave dielectric properties of the ceramics. This has significant implications for enhancing the performance and applications of the ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Jishi Du, Xiaojun Huang, Mengmeng Wang, Huali Zhang
Summary: Sintering in pure O2 enhances the densification of oxide ceramics during the final stage, but the heating rate has a significant effect on the densification process.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Athanasios Goulas, Tom Whittaker, George Chi-Tangyie, Ian M. Reaney, Will Whittow, Bala Vaidhyanathan
Summary: Multi-material metal/ceramic 3D structures consisting of metallic silver and ultra-low sintering temperature silver molybdenum oxide ceramics were additively manufactured and densified using microwave-assisted sintering for the first time. Optimal densification conditions at 440 degrees C / 1 h resulted in a relative permittivity of 10.99 ± 0.04, dielectric losses of 0.005 ± 0.001, and a microwave quality factor of 2597 ± 540 GHz. The use of 2 kW microwave energy at 2.45 GHz for 60 min successfully densified the metallic Ag infilling electrodes without causing any macroscopic defects. A fully functional multi-layered antenna structure with a metamaterial artificial magnetic conductor was designed, dual-printed, and densified to demonstrate the potential of combining multi-material additive manufacturing with microwave-assisted sintering.
APPLIED MATERIALS TODAY
(2023)
Article
Materials Science, Ceramics
Cheng Zhang, Zhongqiang Luo, Chengbo Liu, Junyi Zhu, Jiwei Cao, Jingkun Yuan, Pei Wang, Changyong Liu, Changshi Lao, Zhangwei Chen
Summary: This study utilized photocuring-based digital light processing (DLP) 3D printing technology to prepare basic photocuring units from cordierite ceramic slurries loaded with different average particle sizes, studying the printing and sintering behaviors and performances of the ceramic slurries and printed units, ultimately determining dimension retention levels.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Zoe Roulon, Jean-Michel Missiaen, Sabine Lay
Summary: This study investigates the effects of binders on shrinkage and microstructure evolution of cemented carbides, comparing Co used in the industry to Fe and Ni binders. It is found that WC-Fe requires a higher temperature for solid state sintering compared to WC-Co and WC-Ni alloys. Discussions in this study involve densification mechanisms in relation to dilatometry results, microstructural analyses, DFT calculations, and a theoretical kinetic model from literature.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Engineering, Manufacturing
Daniel Oropeza, A. John Hart
Summary: This paper explores the development and use of reactive metal salt binders for BJAM of ceramic components. By comparing different binders, it demonstrates the importance of metal salt binders in maintaining part strength during sintering.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Ceramics
Jiang Wang, Yu Ni, Kai Liu, Yanying Du, Wei Liu, Zijian Wang, Shangyu Huang, Huajun Sun
Summary: The study employed numerical simulation to investigate the densification behavior of MgTiO3 ceramics during pressureless sintering, showing high accuracy in predicting densification and grain growth trends. The results provide a reliable method for designing and manufacturing microwave dielectric products.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Olivier Guillon, Wolfgang Rheinheimer, Martin Bram
Summary: Novel sintering methods have gained significant attention in the scientific community due to their use of electric field effects, high heating rates, mechanical pressure, or hydrothermal conditions, which offer advantages over conventional sintering routes. This perspective provides a general explanation of these effects and discusses their current status in processing high-performance ceramic materials. Specifically, flash sintering, ultrafast high-temperature sintering, spark plasma sintering, cold sintering, and photonic sintering methods based on different light sources are examined, comparing their specificities, potentials, and limitations, particularly in terms of possible industrialization.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Engineering, Manufacturing
Marco Zago, Nora Francesca Maria Lecis, Maurizio Vedani, Ilaria Cristofolini
Summary: The dimensional and geometrical precision of parts produced by binder jetting is crucial for the transition to industrial production, considering the influence of both printing and sintering processes, as well as the anisotropy of dimensional change on sintering. The study reveals good agreement between predicted and measured results using a theoretical model, emphasizing the importance of considering the influence of printing process parameters.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Physical
Chenbo Gao, Pengfei Xu, Fei Ruan, Chenyu Yang
Summary: This study proposes a new method to prepare metal-ceramic composites from magnetically selected iron ore using microwave heating. By introducing different microwave susceptors, the ratio of metallic and ceramic phases can be easily controlled, and the microstructure and reaction mechanisms were investigated in detail.
Article
Materials Science, Multidisciplinary
L. . M. Huang, J. J. Bian
Summary: The microwave dielectric properties of NaMgF3 ceramics prepared by reactive sintering (RS) and conventional sintering (CS) processes were investigated. Both processes yielded phase pure NaMgF3 ceramics with relative densities of around 95%. By comparison, the RS sample showed lower sintering activation energy and larger grain size. However, both densified samples displayed similar microwave dielectric properties, which included a dielectric constant (er) of 6.9, a Q x f value of 63000 GHz, and a temperature coefficient of resonant frequency (rf) of -114 ppm/°C. Nevertheless, the large negative rf value needs to be further improved for practical applications.
