Papers by Author: Ming Hao Fang

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Authors: Zhen Zhu Cao, Wei Pan, Ming Hao Fang, Rui Gang Wang
Authors: Li Yin, Zhao Hui Huang, You Guo Xu, Yue Tong Li, Yang Gai Liu, Ming Hao Fang
Abstract: Phase behaviors of zircon at different temperatures via carbothermal reduction-nitridation were investigated in this study. By using zircon as raw material, with carbon coke as reducing agent, the influence of reaction temperatures (1450, 1500, 1550 and 1600 °C, respectively) on phase behaviors and microstructure of the products was characterized by X-ray diffraction analysis (XRD), scanning electronic microscopy (SEM) and energy dispersive spectroscopy (EDS). The results shows that by carbothermal reduction-nitridation, the main phases in the final products of zircon are m-ZrO2, c-ZrO2, β-SiC, ZrN and β-Si3N4 at different temperatures for 4 hours.
Authors: Lei Zhang, Tao Yang, Qian Yang, Zhao Hui Huang, Ming Hao Fang, Yan Gai Liu
Abstract: Ta-doped Li3V2(PO4)3 cathode material coated by carbon was synthesized via a sol-gel method. Effects of Ta5+ doping on the physical structure and electrochemical performances of the Li3V2(PO4)3/C cathode materials were investigated. Compared with the undoped sample, the Ta-doped samples had no excess peaks but the larger particle size and the narrower distribution of the particle size, indicating that Ta5+ entered into the structure of (Li1-5xTax)3V2(PO4)3/C rather than forming any impurities. When x was up to 0.01, the best electrochemical properties of the Ta-doped cathode materials had been displayed at the charge and discharge rate of 0.1C with the voltage of 3.0~4.8V. The analysis of cyclic voltammetry revealed that the polarization of the Li3V2(PO4)3/C cathode materials could be effectively decreased by Ta5+ doping(x=0.01), mainly resulting from the better electronic conductivity.
Authors: Sui Lin Shi, Wei Pan, Ming Hao Fang, Zhen Yi Fang
Abstract: HAp-Ti3SiC2 (60 vol.%) composite was fabricated using Sparkle Plasma Sintering (SPS). The mechanical properties and microstructure of the composite sintered at different temperature were investigated. The results show that no reaction occurred between HAp and Ti3SiC2, and the strength and fracture toughness of the composite were improved relative to pure HAp, which may be attributed to the change of microstructure and fracture mode as an effect of Ti3SiC2 addition.
Authors: Ming Hao Fang, Wei Pan, Rui Feng Sun, Long Tu Li
Authors: Xue Yin Liu, Yan Gai Liu, De Xin Yang, Ding Yun Ye, Zhao Hui Huang, Ming Hao Fang
Abstract: CaAl12O19-Al2O3 composite ceramics were synthesized by in situ solid state reaction using CaCO3 and industrial α-Al2O3 powders. The effects of sintering temperature and ratio of CA6 (CaAl12O19) content on phases and microstructure of the final composite ceramics were studied by XRD and SEM. The result showed that sheet-like CA6 appeared in the materials when sintering temperature was higher than 1400°C and grew up with the increased of the sintering temperature. The optimum sintering temperature was 1600°C, when the sample containing 20wt% CA6 was sintered at 1600°C, the bulk density was 3.21g/cm3, the apparent porosity achieved 9.94% and the bending strength gained 149.88MPa. With the increasing of CA6 content in the final composite ceramics, the bulk density and the bending strength increased firstly and then decreased. The lowest apparent porosity 1.42%, a density of 3.60g/cm3 and the highest bending strength of 265.10MPa were achieved for the sample containing 10wt% CA6 sintered at 1600°C.
Authors: You Guo Xu, Bin Jiang, Zhao Hui Huang, Ming Hao Fang, Yan Gai Liu
Abstract: Si3N4-SiC-C refractory composites were prepared under the condition of 1450°C × 3h with electrofoging anthracite, Si3N4, SiC as the raw material and the modification emulsified bitumen as the binder. The effects of the silicon and silica fine powder additives on the compressive strength of Si3N4- SiC-C refractory composites were studied. The results indicated that adding an appropriate ratio range of silicon or silica fine powder in the composites both can improve the compressive strength of the material.
Authors: Lin Yang, Zhao Hui Huang, Li Bing Liao, Ming Hao Fang
Authors: Ming Hao Fang, Wei Pan, Rui Gang Wang, Zhen Zhu Cao, Jian Chen, Li Kun Hou
Authors: Rui Gang Wang, Wei Pan, Ming Hao Fang, Jian Chen, Zhen Zhu Cao
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