Article
Materials Science, Multidisciplinary
Jinsheng Li, Xin Liu, Lei Wu, Haipeng Ji, Liang Dong, Xudong Sun, Xiwei Qi
Summary: Yb:YAG transparent ceramics were fabricated using the solid-state method and vacuum sintering technology, with monodispersed Y2O3 and Al2O3 powders showing improved mixing uniformity. Studies showed that the hydrolysis of Y2O3 could significantly affect the performance of the ceramics.
Article
Materials Science, Multidisciplinary
Jian Huang, Zhongming Zhang, Changlin Yang, Bin Zhang, Yunxia Sun, Tuo Liang, Tian Li, Zhu Mao, Jiemin Zu, Jingchao Wang, Ruiru Cai, Jianfeng Liu
Summary: The hot tearing susceptibility of AlN/AZ91D composites was evaluated using the CRC method combined with thermal analysis. It was found that the composites had lower susceptibility compared to AZ91D. The microstructure analysis showed that the in-situ AlN particles refined the matrix grains and shortened the intergranular shrinkage distance, which improved the resistance to hot tearing.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Qipeng Bao, Yiru Yang, Xiaochun Wen, Lei Guo, Zhancheng Guo
Summary: This paper presents a novel technology using high-temperature remelting spheroidization (HRS) to prepare spherical metal powders, with a focus on copper powder spheroidization. The results show unique advantages of HRS technology in producing perfect spherical metal powders with improved fluidity.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Ceramics
Naoki Ohashi, Yoshio Matsui, Hiroyo Segawa, Noboru Tanida, Satoshi Nagaso, Masaya Nishida, Ichitaro Okamura, Yuta Osawa, Alfian Noviyanto, Benjamin Soulie, Kenji Watanabe, Toshiyuki Nishimura, Takeo Ohsawa, Yoshifumi Ogiso, Suetake Omiya
Summary: This study investigated the chemothermal pulverization (CTP) phenomena induced in titanate single crystals and ceramics by high-temperature treatment, revealing the formation of nanosized voids filled with nitrogen gas. The four-step process of CTP was identified, including nitride ion diffusion, nitrogen molecule deposition, void growth, and nanopowder formation. Doping effects and theoretical calculations were used to discuss the mechanism of CTP phenomena.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Xin Wei, Hao Zhang, Junjie Dang, Haixian Xu, Ruijian Zheng, Jun Guo, Song Cui, Jianhua Zhang, Wenming Tang
Summary: AlN ceramics with different grain-boundary phase compositions and microstructures were fabricated through debinding process. The migration of grain-boundary oxides and microstructural evolution affect the properties of the ceramics. Modified models were built to predict the thermal conductivity of these ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Linzhi Jiang, Tieyan Chang, Peixin Zhu, Guixiang Zhang, Jiajing Du, Ning Liu, Haoxin Chen
Summary: This study prepared CBN/Fe-based spherical composite magnetic abrasive particles (MAPs) and investigated the effects of different process conditions on the MAP quality. It was found that the quality of MAPs prepared using two-stage atomizing nozzles was superior, and MAPs with the best sphericity were obtained at a second-stage gas pressure of 6 MPa with CBN abrasive embedded uniformly on the iron matrix surface. Additionally, for MAPs with the same particle size, the iron matrix wrapped more effectively around CBN abrasives with smaller grain sizes.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ming Jin, Xu Wu, Wei Shao, Zhen Tan, Xingye Guo, Zheng Zhou, Guohong Wang, Li Cui, Dingyong He, Lian Zhou
Summary: In this study, induction plasma spheroidization was used to spheroidize Mo-62Si-5B powders, resulting in the formation of spherical B-modified MoSi2 powders with a size range of 45-100 mu m. The spheroidization rate, flowability, and oxygen content of the powders were improved with increasing plasma power. With increased heat absorption, the morphology of the particles changed from polygonal to spherical, and the microstructure transformed from the original hypoeutectic structure to a cellular eutectic structure.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
A. R. C. Gerlt, A. K. Criner, S. L. Semiatin, K. N. Wertz, E. J. Payton
Summary: This paper addresses the challenge of accurately estimating the mean size of features within an opaque material using only 2D observations, and proposes a method for transforming 2D observations into estimates of the full 3D distributions with improved accuracy.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Guibing Shi, Xiaolu Hu, Yifan Lai, Jianhua Wu, Mingxu Wang, Xuelian Li, Chuanxiao Peng, Zongzhen Li, Li Wang
Summary: By tuning the mass ratio of powders, the electromagnetic performance and frequency properties of nanocrystalline soft magnetic composites were balanced, leading to improved comprehensive performance and potential application in high-frequency inductance components.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Yuming Wang, Liang Qiao, Jingwu Zheng, Yao Ying, Jing Yu, Wangchang Li, Shenglei Che
Summary: In this study, aluminium nitride (AlN) powder was prepared using ultrafine alumina and carbon black through the carbothermal reduction-nitridation method. A polyethylene glycol (PEG) and emulsifier (OP10) dispersing system was used to distribute the raw powders during ball milling. The OP-10/PEG composite system reduced the viscosity of the slurry and improved the wettability of water on the carbon black powder, resulting in a better distribution of alumina and carbon. The dispersed structure formed by the OP-10 micelles and long PEG chains increased the number of small primary particles and decreased the number of large agglomerates in the final AlN products.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Shenghan Gao, Ao Fu, Zhonghao Xie, Tao Liao, Yuankui Cao, Bin Liu
Summary: High-activity spherical TaNbTiZr refractory high-entropy alloy (REHA) powders were successfully prepared using the methods of electrode induction melting gas atomization (EIGA) and plasma rotating electrode process (PREP). Both methods produced powders with a single-phase body-centered cubic (BCC) structure and low oxygen content. The PREPed powders exhibited higher sphericity and smoother surface, but larger particle size compared to the EIGAed powders.
Article
Materials Science, Multidisciplinary
Xiao-Hui Yang, Kai-Fei Wang, Guo-Hua Zhang, Kuo-Chih Chou
Summary: Ultrafine WC-VC/Cr3C composite powders with uniform distribution of V/Cr were synthesized using a novel method. The addition amount of VC or Cr3C2 had effects on the phase constitution, particle size, and micromorphology of the composite powders. The inhibition effect of Cr3C2 on WC grain growth was worse than that of VC.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Chemistry, Physical
Samuel Rogers, Matthew Dargusch, Damon Kent
Summary: This study presents a novel and cost-effective method to produce aluminium nitride (AlN) powder by directly nitridating loose aluminium powder at low temperatures (as low as 500℃) using a vacuum tube furnace under flowing high-purity nitrogen. The addition of a small amount of magnesium powder (1 wt.%) facilitates the nitridation reaction. The results show that AlN can be obtained at temperatures higher than or equal to 500℃, with the highest yield of 80-85% achieved at 530℃ for a duration of at least 1 hour. At temperatures around 510℃, a relatively high proportion of AlN (>73% after 6 hours) can be obtained while maintaining excellent friability for manual reprocessing into powder.
Review
Engineering, Chemical
Kameswara Srikar Sista, Abhijeet Premkumar Moon, Gourav Ranjan Sinha, Bilal Murtuza Pirjade, Srinivas Dwarapudi
Summary: This article presents various research studies on the synthesis of spherical metal powders using RF plasma spherodization. It provides detailed insights into the influencing factors of the spherodization process, including feed parameters and plasma parameters.
Article
Materials Science, Ceramics
Hanlin Yang, Tao Xu, Fang Li, Shengquan Yu, Bin Kang, Xin Liu, Yaozhi Wang, Jiachen Liu, Wei Jing
Summary: Highly sinterable Tm,Ho:(Lu1-xScx)(2)O-3 nanopowders were synthesized using a spray co-precipitation method, and the effects of calcination temperatures and x values on the powder properties were investigated. The powders calcined at 1100 degrees C for 2 hours showed the highest sintering activity, leading to the fabrication of Tm,Ho:(Lu1-xScx)(2)O-3 ceramics with high in-line transmittance of 79.80% at 2090 nm. This work demonstrates the potential for producing Tm,Ho:(Lu1-xScx)(2)O-3 transparent ceramics for various applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Ming Zhou, Jiawei Liu, Chongyi Ling, Yiyao Ge, Bo Chen, Chaoliang Tan, Zhanxi Fan, Jingtao Huang, Junze Chen, Zhengqing Liu, Zhiqi Huang, Jingjie Ge, Hongfei Cheng, Ye Chen, Lei Dai, Pengfei Yin, Xiao Zhang, Qinbai Yun, Jinlan Wang, Hua Zhang
Summary: The study presents a facile wet-chemical method to synthesize Pd3Sn nanorods with different crystal phases and demonstrates the ease of tuning the crystal phase by altering precursor types. Additionally, the method is shown to be applicable for synthesizing PdCuSn nanorods with the L1(2) crystal phase, exhibiting superior electrocatalytic performance.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yiyao Ge, Xixi Wang, Bo Chen, Zhiqi Huang, Zhenyu Shi, Biao Huang, Jiawei Liu, Gang Wang, Ye Chen, Lujiang Li, Shiyao Lu, Qinxin Luo, Qinbai Yun, Hua Zhang
Summary: The study successfully synthesized various Pd@Ir core-shell nanostructures with unconventional crystal phases through wet-chemical seeded method. Among them, the heterophase Pd-45@Ir-55 nanodendrites showed excellent catalytic performance, providing a new approach for the development of low-cost, efficient catalysts.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Physical
Jinzhe Liang, Yiyao Ge, Zhen He, Qinbai Yun, Guigao Liu, Shiyao Lu, Li Zhai, Biao Huang, Hua Zhang
Summary: Metal-containing nanomaterials have attracted increasing attention due to their unique physicochemical properties and promising applications. The phase of these nanomaterials, especially the amorphous phase and amorphous/crystalline heterophase, significantly influences their performance in catalysis and energy storage. This review provides an overview of the recent progress in wet-chemical synthesis and applications of amorphous and amorphous/crystalline heterophase metal-containing nanomaterials. Different categories of metal-containing nanomaterials, including metals, metal alloys, and metal compounds, are highlighted, along with their synthetic routes and promising applications. Current challenges and personal perspectives in this emerging research field are also discussed.
Article
Chemistry, Physical
Yiyao Ge, Jingjie Ge, Biao Huang, Xixi Wang, Guigao Liu, Xiang-Huan Shan, Lu Ma, Bo Chen, Guanghua Liu, Songmo Du, An Zhang, Hongfei Cheng, Qingbo Wa, Shiyao Lu, Lujiang Li, Qinbai Yun, Kuo Yuan, Qinxin Luo, Zhichuan J. J. Xu, Yonghua Du, Hua Zhang
Summary: Amorphous nanomaterials with long-range disordered structures have unique properties and promising applications in catalysis. This study demonstrates a facile wet-chemical reduction strategy for synthesizing various amorphous multimetallic Pd-based nanomaterials, such as PdRu, PdRh, and PdRuRh, and explores their phase-dependent catalytic performances in different applications. The synthesized amorphous PdRh nanocatalyst exhibits superior performance in the hydrogen evolution reaction compared to its crystalline counterpart and other reported Pd-based electrocatalysts for HER.
Review
Chemistry, Multidisciplinary
Qinbai Yun, Yiyao Ge, Biao Huang, Qingbo Wa, Hua Zhang
Summary: The rational design and selection of ligands can modulate the phase of nanomaterials, leading to the development of phase engineering of nanomaterials (PEN). Ligands can affect the stability of different phases by modifying the surface energy of nanomaterials during wet-chemical synthesis. The use of appropriate ligands enables the synthesis of nanomaterials with unconventional phases under mild reaction conditions.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Biao Huang, Yiyao Ge, An Zhang, Shangqian Zhu, Bo Chen, Guanxing Li, Qinbai Yun, Zhiqi Huang, Zhenyu Shi, Xichen Zhou, Lujiang Li, Xixi Wang, Gang Wang, Zhiqiang Guan, Li Zhai, Qinxin Luo, Zijian Li, Shiyao Lu, Ye Chen, Chun-Sing Lee, Yu Han, Minhua Shao, Hua Zhang
Summary: A seeded method is developed to synthesize hollow PdSn intermetallic nanoparticles (NPs) with two different intermetallic phases, orthorhombic Pd2Sn and monoclinic Pd3Sn2. The obtained hollow orthorhombic Pd2Sn NPs exhibit excellent electrocatalytic performance towards glycerol oxidation reaction, surpassing solid orthorhombic Pd2Sn NPs, hollow monoclinic Pd3Sn2 NPs, and commercial Pd/C. The reaction mechanism using the hollow orthorhombic Pd2Sn catalyst is investigated, revealing its higher efficiency in cleaving the C-C bond compared to commercial Pd/C.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei Zhai, Junlei Qi, Chao Xu, Bo Chen, Zijian Li, Yongji Wang, Li Zhai, Yao Yao, Siyuan Li, Qinghua Zhang, Yiyao Ge, Banlan Chi, Yi Ren, Zhiqi Huang, Zhuangchai Lai, Lin Gu, Ye Zhu, Qiyuan He, Hua Zhang
Summary: Phase transition with band gap modulation is extensively studied for its applications in memories, neuromorphic computing, and transistors. This study reports a reversible phase transition in the semimetallic 1T'-WS2 via proton intercalation, resulting in a newly discovered semiconducting WS2 phase. The phase transition achieves an on/off ratio of >10(6). This work provides insights into the phase transition of TMDs and opens up possibilities for tuning their physicochemical properties.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Li Zhai, Sara T. Gebre, Bo Chen, Dan Xu, Junze Chen, Zijian Li, Yawei Liu, Hua Yang, Chongyi Ling, Yiyao Ge, Wei Zhai, Changsheng Chen, Lu Ma, Qinghua Zhang, Xuefei Li, Yujie Yan, Xinyu Huang, Lujiang Li, Zhiqiang Guan, Chen-Lei Tao, Zhiqi Huang, Hongyi Wang, Jinze Liang, Ye Zhu, Chun-Sing Lee, Peng Wang, Chunfeng Zhang, Lin Gu, Yonghua Du, Tianquan Lian, Hua Zhang, Xue-Jun Wu
Summary: Epitaxial growth is a commonly used strategy to tailor heterostructures with precise compositions and interfaces. However, it is challenging for materials with large lattice mismatch and/or different chemical bonding. In this study, the authors developed a noble metal-seeded epitaxial growth strategy to prepare highly symmetrical noble metal-semiconductor branched heterostructures, demonstrating the feasibility of epitaxial growth in materials with large lattice mismatches.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Bo Chen, Qinbai Yun, Yiyao Ge, Lujiang Li, Hua Zhang
Summary: The crystal phase is an important parameter that describes the atomic arrangement of crystalline materials. Different crystal phases of monoelemental materials result in different physicochemical properties and functions. With the rapid development of nanotechnology, various monoelemental nanomaterials with unconventional crystal phases have been developed. These unconventional-phase nanomaterials exhibit unique properties and have promising applications in catalysis and batteries.
ACCOUNTS OF MATERIALS RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Yiyao Ge, Biao Huang, Lujiang Li, Qinbai Yun, Zhenyu Shi, Bo Chen, Hua Zhang
Summary: The structural transformation of materials under external conditions is an important phenomenon that has attracted significant research interest. Recently, materials with unconventional phases different from their thermodynamically stable counterparts have been shown to possess distinct properties and can serve as starting materials for further studies. This article summarizes the recent progress in the structural transformation of unconventional-phase starting materials induced by different approaches, including metastable crystalline phase, amorphous phase, and heterophase. The importance of these starting materials in the modulation of resultant structures is highlighted, along with the use of in situ/operando characterization techniques and theoretical simulations.
Article
Chemistry, Multidisciplinary
Xichen Zhou, An Zhang, Bo Chen, Shangqian Zhu, Yu Cui, Licheng Bai, Jinli Yu, Yiyao Ge, Qinbai Yun, Lujiang Li, Biao Huang, Lingwen Liao, Jiaju Fu, Qingbo Wa, Gang Wang, Zhiqi Huang, Long Zheng, Yi Ren, Siyuan Li, Guangyao Liu, Li Zhai, Zijian Li, Jiawei Liu, Ye Chen, Lu Ma, Chongyi Ling, Jinlan Wang, Zhanxi Fan, Yonghua Du, Minhua Shao, Hua Zhang
Summary: Structural engineering of nanomaterials is critical for developing high-performance catalysts. In this study, hierarchical AuCu nanostructures with unconventional phases and defects were synthesized and showed excellent catalytic performance.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Zhenyu Shi, Xiao Zhang, Xiaoqian Lin, Guigao Liu, Chongyi Ling, Shibo Xi, Bo Chen, Yiyao Ge, Chaoliang Tan, Zhuangchai Lai, Zhiqi Huang, Xinyang Ruan, Li Zhai, Lujiang Li, Zijian Li, Xixi Wang, Gwang-Hyeon Nam, Jiawei Liu, Qiyuan He, Zhiqiang Guan, Jinlan Wang, Chun-Sing Lee, Anthony R. J. Kucernak, Hua Zhang
Summary: Crystal phase is a crucial factor that determines the properties and functions of two-dimensional transition-metal dichalcogenides (TMDs). In this study, MoS2 nanosheets with high phase purity were synthesized, and it was found that the 2H-phase template facilitated the epitaxial growth of Pt nanoparticles, while the 1T' phase supported single-atomically dispersed Pt atoms. This research provides valuable insights into the relationship between crystal phase and catalyst development.
Article
Materials Science, Multidisciplinary
Wei Zhai, Zijian Li, Li Zhai, Yao Yao, Siyuan Li, Yongji Wang, Yi Ren, Banlan Chi, Yiyao Ge, Hua Zhang
Summary: Two recent articles published in Nature Nanotechnology independently report a substrate-cutting strategy for the epitaxial growth of large-scale single-crystal TMD monolayers on commercially scalable insulating substrates, opening up a new route for the preparation of such monolayers for future electronics.
Review
Electrochemistry
Yanjie Zhai, Peng Han, Qinbai Yun, Yiyao Ge, Xiao Zhang, Ye Chen, Hua Zhang
Summary: Phase engineering is an important strategy to regulate the catalytic performance of metal nanocatalysts for the electrochemical CO2 reduction reaction (CO2RR), enabling efficient and selective CO2RR. Significant achievements have been made in developing metal nanocatalysts with conventional and unconventional crystal phases.
Review
Multidisciplinary Sciences
Zijian Li, Li Zhai, Yiyao Ge, Zhiqi Huang, Zhenyu Shi, Jiawei Liu, Wei Zhai, Jinzhe Liang, Hua Zhang
Summary: This review provides a brief overview of the recent advances in the wet-chemical synthesis of 2D metal nanomaterials and illustrates their catalytic performances in various electrochemical reactions. The current challenges and perspectives on preparing high-performance 2D metal electrocatalysts are summarized.
NATIONAL SCIENCE REVIEW
(2022)
