Article
Materials Science, Ceramics
Mengjiao Chi, Yahan Liu, Jianwei Zhao, Chao Dong, Xinjiang Luo, Dawei Wang, Bing Liu, Minmin Mao, Feng Shi, Kaixin Song
Summary: In this study, pure-phase Mg3B2O6 ceramics were successfully obtained by combining the cold sintering and post-annealing process. The resulting ceramics exhibited high relative density and dense microstructure. The ceramics also showed excellent microwave dielectric properties.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Wenbin Huang, Hongbo Liu
Summary: A hydrothermal-assisted cold sintering process was developed to prepare antiferroelectric NaNbO3 ceramic, with physical and electrical properties comparable to ceramics made by conventional sintering techniques, but at a lower heat treatment temperature.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Jincheng Yu, Mikko Nelo, Xiaodong Liu, Shouqi Shao, Bing Wang, Sarah J. Haigh, Heli Jantunen, Robert Freer
Summary: Cold sintering combined with annealing processes was used to synthesize high-quality Ca2.7Bi0.3Co3.92O9+delta ceramics, and the effects on thermoelectric performance were studied. By optimizing heat-treatment, the formation of secondary phases, texture development and porosity were controlled, resulting in enhanced electrical conductivity and reduced thermal conductivity.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Bing Liu, Lei Li, Kai Xin Song, Min Min Mao, Zhilun Lu, Ge Wang, Linhao Li, Dawei Wang, Di Zhou, Antonio Feteira, Ian M. Reaney
Summary: In this study, a cold sintering process was used to pre-densify LiF ceramics, leading to significant grain growth and an increase in relative density to 92% after post-annealing treatments. The microwave quality factor (Qf) was greatly improved and reached a maximum of 110,800 GHz, making cold sintered LiF a promising component in low temperature co-fired ceramic formulations.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Chen Li, Yahan Liu, Mengjiao Chi, Xinjiang Luo, Bing Liu, Minmin Mao, Hadi Barzegar Bafrooei, Ge Wang, Ehsan Taheri-Nassaj, Kaixin Song
Summary: High-density Zn3B2O6 ceramics were prepared using a two-step cold sintering and ultra-low temperature sintering process. Microwave properties were significantly improved after annealing, resulting in a uniform microstructure. The cold sintering dissolution-precipitation mechanism was found to be critical for promoting the densification of the ceramics.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Baoyu Deng, Yiming Ma, Tianxiang Chen, Huajing Wang, Jinfeng Lin, Cong Lin, Xiao Wu, Chunlin Zhao, Tengfei Lin, Min Gao, Xinghua Zheng, Changqing Fang
Summary: Dense (K, Na)NbO3 ceramics were successfully fabricated using the cold sintering process with equimolar KOH and NaOH solutions as a transient alkaline flux, showing excellent dielectric and piezoelectric properties at low temperature.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Review
Materials Science, Ceramics
Anna Galotta, Vincenzo M. Sglavo
Summary: Cold sintering process (CSP) has gained global attention for its environmentally friendly and innovative fabrication route, reducing processing time, energy, and costs significantly. The process densifies ceramic powder with the aid of a liquid phase under intense pressure and limited heating conditions, achieving extraordinary results. The review explores processing features, possible densification mechanisms, and challenges, paving the way for new processing opportunities in the future.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Bing Liu, Ke Sha, Qin Wei Zhou, Kai Xin Song, Feng Shi, Yu Hua Cheng
Summary: BaF2 ceramics were prepared using a one-step cold sintering process. The relative density and microstructure improved with increasing pressure, achieving a fully densified microstructure at 900 MPa. The ceramics showed optimized optical, dielectric, and mechanical properties when cold sintered at 900 MPa.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Thomas Herisson de Beauvoir, Claude Estournes
Summary: The Cold Sintering Process was used to promote in situ reactive sintering of hydroxide precursors Al(OH)3, xH2O. The result was dense translucent pellets containing a mix of amorphous and crystalline phases. Further heat treatment induced the transformation of boehmite into gamma-Al2O3, demonstrating the possibility of producing optically translucent ceramics with low temperature stability.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Ceramics
Abdullah Jabr, Haley N. Jones, Andrea P. Arguelles, Susan Trolier-McKinstry, Clive Randall, Raul Bermejo
Summary: The cold sintering process (CSP) densifies ceramics at temperatures below 300 degrees C using a transient phase and applied pressure. Flaws compromising the mechanical strength of cold sintered materials were detected using ultrasonic evaluation, and load transfer misalignments and fast heating rates were identified as major sources of defects. By using precisely aligned punches and slow heating rates, multiple disc-shaped samples achieved homogeneous densification, high relative density (>97%), and improved strength (-120 MPa), demonstrating the feasibility of industrial implementation for CSP scaling up.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Hyeonjin Kim, Sinho Choi, Dong-Hyun Peck, Seog-Young Yoon
Summary: Recently, LiTa2PO8 (LTPO) has been studied as a potential Li-ion solid electrolyte material because of its high bulk ionic conductivity and low grain boundary ionic conductivity. To overcome the issue of Li evaporation during high-temperature sintering, the cold sintering process (CSP) was introduced as an alternative. This study investigates the effect of CSP and post annealing on the microstructure and Li-ion conductivity of LTPO pellets, and finds that CSP produces pellets with an amorphous phase and high Li-ion conductivity, making it a promising alternative to high-temperature sintering for fabricating ceramic solid electrolytes.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Thomas Herisson de Beauvoir, Pierre-Louis Taberna, Patrice Simon, Claude Estournes
Summary: This paper presents the application of in situ impedance analysis in the Cold Sintering Process (CSP), specifically focusing on the influence of acetic acid on the sintering of ZnO and the resulting ceramics. The results demonstrate that this in situ characterization technique has the potential to be applied to a wide range of materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Aicha S. Lemine, Osama Fayyaz, R. A. Shakoor, Zubair Ahmad, Jolly Bhadra, Noora J. Al-Thani
Summary: This study investigates the electrochemical responses of cold and hot compacted, microwave-sintered p- and n-type BiTe alloys in a saline medium. The corrosion behavior of hot-compacted p-type and cold-compacted n-type BiTe alloys was enhanced. The study proposes a corrosion resistance mechanism and fits the experimental data with an equivalent electrical circuit.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jing Guo, Mingming Si, Xuetong Zhao, Li Wang, Ke Wang, Jianyu Hao, Hong Wang, Clive A. Randall
Summary: This study successfully integrated C-60 with ZnO using a cold sintering process, forming thin C-60 layers at the ZnO grain boundaries and significantly improving the electrical properties of the material.
Article
Energy & Fuels
Xiaoshuang Lu, Bin Xu, Xiatong Qin, Ye Chen, Pingxiong Yang, Junhao Chu, Lin Sun
Summary: The study investigated the effects of PHT process on the quality of CZTS/CdS heterojunction and device performance, revealing that PHT process can promote element interdiffusion, increase Cu deficiency on CZTS surface, raise free carrier density, enhance CdS crystallization quality, and ultimately obtain a higher quality heterojunction.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)