Search Results - "He, Duanwei"

Ultrastrong catalyst-free polycrystalline diamond by Li, Qiang, Zhan, Guodong, Li, Dong, He, Duanwei, Moellendick, Timothy Eric, Gooneratne, Chinthaka P., Alalsayednassir, Alawi G.

“…Diamond is the hardest naturally occurring material found on earth but single crystal diamond is brittle due to the nature of catastrophic cleavage fracture…”
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Superhard transparent polycrystalline cubic boron nitride by Zhao, Mengxi, Kou, Zili, Zhang, Youjun, Peng, Bo, Wang, Yipeng, Wang, Zhiwei, Yin, Xiaoshuang, Jiang, Mingli, Guan, Shixue, Zhang, Jiawei, He, Duanwei

“…Polycrystalline cubic boron nitride (PcBN) has been synthesized at 14 GPa and high temperatures of 1300–2000 °C in a two-stage multi-anvil cell. Sintered PcBN…”
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Phase-pure bulk BC8 silicon prepared through secondary phase transition method under high pressure by Li, Xin, Li, Zhiguo, Yang, Ke, He, Duanwei

“…•The formation mechanism of BC8-Si was studied using in situ synchrotron XRD.•Phase-pure bulk BC8-Si was prepared though secondary phase transition method.•The…”
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Synthesis of nano-polycrystalline diamond in proximity to industrial conditions by Tang, Hu, Wang, Mingzhi, He, Duanwei, Zou, Qin, Ke, Yujiao, Zhao, Yucheng

“…Nano-polycrystalline diamond (NPD) can be obtained by direct conversion of various carbons at high temperature and high pressure (HPHT). However, the…”
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The Hardest Superconducting Metal Nitride by Wang, Shanmin, Antonio, Daniel, Yu, Xiaohui, Zhang, Jianzhong, Cornelius, Andrew L., He, Duanwei, Zhao, Yusheng

“…Transition–metal (TM) nitrides are a class of compounds with a wide range of properties and applications. Hard superconducting nitrides are of particular…”
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Abnormal physical behaviors of hafnium diboride under high pressure by Liang, Hao, Peng, Fang, Guan, Shixue, Tan, Lijie, Chen, Haihua, Lei, Li, He, Duanwei, Lu, Cheng

“…Hafnium diboride (HfB2) is one of the most promising hard-brittle ceramic materials with unique physical properties. Here, we have synthesized the…”
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Superstrong micro-grained polycrystalline diamond compact through work hardening under high pressure by Liu, Jin, Zhan, Guodong, Wang, Qiang, Yan, Xiaozhi, Liu, Fangming, Wang, Pei, Lei, Li, Peng, Fang, Kou, Zili, He, Duanwei

“…We report an approach to strengthen micro-grained polycrystalline diamond (MPD) compact through work hardening under high pressure and high temperature, in…”
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Synthesis, Crystal Structure, and Elastic Properties of Novel Tungsten Nitrides by Wang, Shanmin, Yu, Xiaohui, Lin, Zhijun, Zhang, Ruifeng, He, Duanwei, Qin, Jiaqian, Zhu, Jinlong, Han, Jiantao, Wang, Lin, Mao, Ho-kwang, Zhang, Jianzhong, Zhao, Yusheng

“…Among transition metal nitrides, tungsten nitrides possess unique and/or superior chemical, mechanical, and thermal properties. Preparation of these nitrides,…”
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Synthetic Route to Metal Nitrides: High-Pressure Solid-State Metathesis Reaction by Lei, Li, Yin, Wenwen, Jiang, Xiaodong, Lin, Sen, He, Duanwei

“…We report a general synthetic route to well-crystallized metal nitrides through a high-pressure solid-state metathesis reaction (HPSSM) between boron nitride…”
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Strengthening of alumina ceramics under cold compression by Liu, Fangming, Zhang, Jiawei, Liu, Pingping, Deng, Qihuang, He, Duanwei

“…High pressure obviously decreased the sintering temperature of high melting point ceramics and produced bulks with excellent mechanical and thermal properties…”
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Synthesis of Stoichiometric and Bulk CrN through a Solid-State Ion-Exchange Reaction by Chen, Miao, Wang, Shanmin, Zhang, Jianzhong, He, Duanwei, Zhao, Yusheng

“…Chromium mononitride (CrN) exhibits interesting magnetic, structural, and electronic properties for technological applications. Experimental reports on these…”
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Diamond-cBN alloy: A universal cutting material by He Duanwei, Wang, Liping, Kou Zili, Li, Yong, Xiong Lun, Hu, Qiwei, Xu, Chao, Li, Lei, Wang, Qiming, Liu, Jing, Zhao, Yusheng

“…Diamond and cubic boron nitride (cBN) as conventional superhard materials have found widespread industrial applications, but both have inherent limitations…”
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Geodynamics Based on Solidification of Liquid/Molten Substances in the Earth’s Interior by Li, Xin, Tao, Mingjiang, He, Duanwei

“…Since its formation, the Earth has cooled from molten magma to the present layered structure. The liquid and molten substance in the interior of the Earth…”
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Synthesis of two-dimensional semiconductor single-crystal PtSe2 under high pressure by Liu, Ke, Zheng, Binjie, Wu, Jingjun, Chen, Yuanfu, Wang, Xinqiang, Qi, Fei, He, Duanwei, Zhang, Wanli, Li, Yanrong

“…Single-crystal platinum diselenide (PtSe 2 ) is successfully synthesized through direct reaction of metal platinum foil and selenium powder under high pressure…”
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Synthesis of GaN Crystals Through Solid-State Metathesis Reaction Under High Pressure by Lei, Li, He, Duanwei

“…Well-crystallized gallium nitride (GaN) crystals are prepared through an untraditional solid-state metathesis (SSM) reaction under high pressure between…”
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Novel Nitride Materials Synthesized at High Pressure by Wang, Pei, Wang, Shanmin, Zou, Yongtao, Zhu, Jinlong, He, Duanwei, Wang, Liping, Zhao, Yusheng

“…Nitride materials including conventional manmade superhard light-element nitrides, such as cubic boron nitride (cBN), cubic silicon nitride (γ-Si3N4), and…”
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Phase-Transition Induced Elastic Softening and Band Gap Transition in Semiconducting PbS at High Pressure by Wang, Shanmin, Zhang, Jianzhong, Zhang, Yi, Alvarado, Andrew, Attapattu, Jeevake, He, Duanwei, Wang, Liping, Chen, Changfeng, Zhao, Yusheng

“…We have investigated the crystal structure and phase stability, elastic incompressibility, and electronic properties of PbS based on high-pressure neutron…”
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Unusual Mott transition in multiferroic PbCrO3 by Wang, Shanmin, Zhu, Jinlong, Zhang, Yi, Yu, Xiaohui, Zhang, Jianzhong, Wang, Wendan, Bai, Ligang, Qian, Jiang, Yin, Liang, Sullivan, Neil S, Jin, Changqing, He, Duanwei, Xu, Jian, Zhao, Yusheng

“…The Mott insulator in correlated electron systems arises from classical Coulomb repulsion between carriers to provide a powerful force for electron…”
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Strength enhancement of nanocrystalline tungsten under high pressure by Yang, Jing, Deng, Wen, Li, Qiang, Li, Xin, Liang, Akun, Su, Yuzhu, Guan, Shixue, Wang, Junpu, He, Duanwei

“…Three tungsten powder samples—one coarse grained (c-W; grain size: 1 µm–3 µm) and two nanocrystalline (n-W; average grain sizes: 10 nm and 50 nm)—are…”
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Pressure induced phase transition of PbNiO3 from LiNbO3-type to perovskite by Wang, Wendan, Wang, Shanmin, He, Duanwei, Xu, Ji-an

“…The phase transition of PbNiO3 from LiNbO3 structure to the perovskite structure has been observed between 4.4 and 9.5GPa, which was investigated by…”
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