Article
Materials Science, Multidisciplinary
Rubia Hassan, Kantesh Balani
Summary: The sintering mechanisms of ZrB2 and SiC-reinforced ZrB2 ceramic composites were investigated by determining the activation energy of densification in different temperature ranges. The results showed that the addition of SiC changed the prominent densification mechanism and impacted the mechanical performance with systemic increase of sintering temperature.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Congcong Zhao, Dabiao Xia, Guangmeng Yang, Na Wang, Chuanyu Cui, Qi Lu, Haowei Deng
Summary: In this study, a W-0.5SiC composite material was prepared by thoroughly mixing 0.5 wt% SiC nano particles and pure tungsten powders using ball milling, followed by the sintering process using Spark Plasma Sintering (SPS). The effect of sintering temperature on the microstructure and mechanical properties of the W-0.5SiC composite was investigated. It was found that the sintering process led to the formation of tungsten carbide (W2C) and silicon oxide (SiO2) phases at the grain boundaries. The grain size of the composite increased with increasing sintering temperature. Parameter fitting based on the grain growth power law suggested that the grain growth of the W-0.5SiC composite during the SPS process was mainly controlled by surface diffusion. The 1800°C sintered W-0.5SiC composite exhibited a hardness of 342.2 +/- 4.3 HV and a compressive strength of 1417 +/- 137 MPa. The deformation behavior of the 1800°C sintered W-0.5SiC composite was investigated using the digital image correlation technique during compressive testing, revealing crack formation at the sample edge or near the surface. The cracks extended parallel to the loading direction and propagated throughout the entire sample in less than 0.2 s.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Damien Bregiroux, Julie Cedelle
Summary: The study found that by controlling the sintering temperature during SPS, ZnS ceramics with small grain size and almost full density could be obtained, but higher temperatures could lead to grain growth, affecting mechanical properties. Keeping the grain size below 100 nm appears to be the key to developing high-performance ZnS functional ceramics.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Ceramics
Kirill Podbolotov, Dmitry Moskovskikh, Mohammad Abedi, Veronika Suvorova, Andrey Nepapushev, Kostya Ken Ostrikov, Alexander Khort
Summary: In this study, a new method based on low-temperature reactive spark plasma sintering was developed to produce dense SiC-based ceramics with superior mechanical properties. The controlled formation and decomposition of the in-situ Ti3SiC2 MAX phase enabled the fabrication of engineering ceramics with enhanced compressive strength, elastic modulus, and microhardness. This research has significant potential for practical applications in producing advanced SiC-based ceramics for various purposes and for further understanding and development of high-temperature sintering methods.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Charles Manierea, Joseph Sambasene Diatta, Christophe Couder, Christelle Harnois, Sylvain Marinel
Summary: This study proposes a combined master sintering curve and regression method to determine all sintering model parameters. It introduces the original method of estimating the grain size curve and its impact on the densification kinetics at the final stage. The results show good agreement between the model and experimental data points.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Ceramics
Jie Liang, Xuetong Zhao, Shenglin Kang, Jing Guo, Zhiling Chen, Yuli Long, Qian Zeng, Jianjie Sun, Lijun Yang, Ruijin Liao, Clive A. Randall
Summary: In this work, a hybrid cold sintering/spark plasma sintering (CSP-SPS) process is demonstrated for densifying and controlling grain growth in ZnO ceramics. The CSP-SPS process achieves high densities (>98%) at lower temperatures (200-300 ℃) and exhibits mild grain coarsening.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Crystallography
Dauren Zhambakin, Almira Zhilkashinova, Madi Abilev, Leszek Latka, Alexandr Pavlov, Bauyrzhan Tuyakbaev, Assel Zhilkashinova
Summary: This article investigates the spark plasma sintering of ceramics based on silicon carbide with nanoadditives. The results show that the SPS method can produce materials with higher density, increased mechanical strength, and microhardness compared to liquid-phase sintering.
Article
Chemistry, Physical
Burak Demir, Enes Ibrahim Duden, Erhan Ayas
Summary: The high-purity and high-density MoAlB phase was synthesized successfully using SPS at 1200°C. The addition of Si and SiC reinforcement improved the mechanical properties and oxidation resistance of the MoAlB ceramics. The highest hardness and fracture toughness were obtained in the MoAlB-SiC composite, while the best oxidation resistance was achieved in the MoAlB-Si-SiC composite. The electrical conductivity decreased with the increase in temperature, while the thermal conductivity showed a decreasing trend up to 400°C and an increasing trend above 400°C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Li Zhang, Xueping Ren, Jingkun Li, Chuanchao Dong
Summary: The addition of Al significantly improves the mechanical properties of SiC-B4C gradient ceramics, leading to increased microhardness and fracture toughness. The densification kinetics and phase evolution during the sintering process were analyzed for the spark plasma sintered ceramics.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Gyeonghun Kim, Jungsu Ahn, Sangjoon Ahn
Summary: The study examined the spark plasma sintering behavior of uranium mononitride synthesized by the hydride-nitride process, revealing two regimes in the sintering process based on temperature. At lower temperatures, pellet density increased with temperature to a maximum value, while grain growth was insignificant. On the other hand, at higher temperatures, rapid achievement of maximum density and significant grain growth were observed.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Zhiyong Wang, Jianping Wang, Yongsai Xu, Mingdong Yi, Guangchun Xiao, Zhaoqiang Chen, Jingjie Zhang, Hui Chen, Chonghai Xu
Summary: The impact of sintering rate on the microstructure and mechanical properties of cermets was explored using ultrafast sintering. The results showed that an appropriate heating rate could achieve rapid densification and inhibit abnormal grain growth, leading to excellent mechanical properties in (Ti, W)C cermets.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Chong Tian, Qi-Wen Wang, Jia-Min Wu, Chun -Lei Liu, Zhang-Ao Shi, Hai-Lu Huang, Xin Lin, Yu-Sheng Shi
Summary: This study proposes a method to prepare porous Si3N4 ceramics by combining DLP with SPS technology and investigates the effect of SPS temperature and holding time on the microstructure and properties of ceramics prepared by DLP. The results show that with an increase in sintering temperature, the phase conversion content, fracture mode, and flexural strength of Si3N4 ceramics change significantly. Holding time also affects the properties of the ceramics, particularly porosity and flexural strength.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Van-Huy Nguyen, Seyed Ali Delbari, Mehdi Shahedi Asl, Quyet Van Le, Abbas Sabahi Namini, Zohre Ahmadi, Mohammad Farvizi, Mohsen Mohammadi, Mohammadreza Shokouhimehr
Summary: This research investigated the sintering behavior and microstructure of ZrB2-based materials containing graphene nano-platelets and SiC whiskers using spark plasma sintering at 1900 degrees C. The addition of graphene was found to beneficially remove oxide impurities during sintering and contribute to porosity removal, resulting in unique nanostructural features.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ting Wang, Haiming Zhang, Lixia Cheng, Shenhua Song, Weiping Gong
Summary: Perovskite solid solution materials 0.67BiFeO(3)-0.33BaTiO(3) were synthesized using spark plasma sintering method. The materials sintered at 880℃ showed the highest density, compact microstructure, and enhanced fermelectric properties.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Ali Celik, Gozde Caglar, Yasemin Celik
Summary: This study focuses on the fabrication of porous alumina ceramics using carbon black powders as a pore forming agent and spark plasma sintering technique. The physical, mechanical, and thermal properties of the ceramics were investigated after removing the carbon black particles.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Characterization & Testing
P. Zhao, X. Liu, L. Lu, P. Wang
JOURNAL OF TESTING AND EVALUATION
(2018)
Article
Thermodynamics
Shoude Wang, Bo Liu, Piqi Zhao, Lingchao Lu, Xin Cheng
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2018)
Article
Materials Science, Ceramics
Peng Du, Tongtong Zhou, Piqi Zhao, Zonghui Zhou, Yu Liu, Xn Cheng
Article
Crystallography
Piqi Zhao, Lingchao Lu, Xianping Liu, Angeles G. De la Torre, Xin Cheng
Article
Construction & Building Technology
Mingxu Chen, Laibo Li, Yan Zheng, Piqi Zhao, Lingchao Lu, Xin Cheng
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
Lingchao Lu, Piqi Zhao, Zeyu Lu
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Polymer Science
Piqi Zhao, Han Wang, Shoude Wang, Peng Du, Lingchao Lu, Xin Cheng
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2018)
Article
Thermodynamics
Mingxu Chen, Laibo Li, Piqi Zhao, Shoude Wang, Lingchao Lu
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2019)
Article
Polymer Science
Honghua Liu, Piqi Zhao, Lingchao Lu, Shoude Wang, Mingxu Chen, Xin Cheng
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2019)
Article
Polymer Science
Piqi Zhao, Honghua Liu, Xiangyang Guo, Han Wang, Shoude Wang, Lingchao Lu, Xin Cheng
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2019)
Article
Construction & Building Technology
Wenlong Zhang, Shoude Wang, Piqi Zhao, Lingchao Lu, Xin Cheng
CONSTRUCTION AND BUILDING MATERIALS
(2019)
Article
Construction & Building Technology
Mingxu Chen, Laibo Li, Jiaao Wang, Yongbo Huang, Shoude Wang, Piqi Zhao, Lingchao Lu, Xin Cheng
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Mingxu Chen, Yan Zheng, Xiangming Zhou, Laibo Li, Shoude Wang, Piqi Zhao, Lingchao Lu, Xin Cheng
CONSTRUCTION AND BUILDING MATERIALS
(2019)
Article
Engineering, Multidisciplinary
Mingxu Chen, Bo Liu, Laibo Li, Lidong Cao, Yongbo Huang, Shoude Wang, Piqi Zhao, Lingchao Lu, Xin Cheng
COMPOSITES PART B-ENGINEERING
(2020)
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)