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A new sol-gel process for preparing Ba(Mg1/3Nb2/3)O3 nanopowders
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来源: 《International Journal of Minerals Metallurgy and Materials2004年第1期》——Fang Lian, Lihua Xu, Fushen Li, and Hailei ZhaoDepartment of Inorganic Materials, University of Science and Technology Beijing, Beijing , China
. The resulting glassy substance after cooling was dispersed and washed several times in distilled water to remove the Na+ ions. The as-prepared colloidal Nb2O5·nH2O was subsequently mixed with acetic......
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Bacterial leaching of discarded copper ores from Yongping, China
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来源: 《International Journal of Minerals Metallurgy and Materials2005年第4期》——Muqing Qiu, Genxuan Wang, and Zhuxia Shen College of Life Sciences, Zhejiang University, Hangzhou , China
ores were done with the mixed bacteria obtained through a series of enrichment, separation, domestication and combination tests. The results show that in the process of bioleaching, the pH value rises......
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Pressureless reactive sintering mechanism of nanocrystalline Bi2O3-Y2O3 solid electrolyte
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来源: 《International Journal of Minerals Metallurgy and Materials2006年第1期》——Qiang Zhen,), Liangyan Dong), Gang Shi), Rong Li), Weiming He), and Jianqiang Liu) ) Nano-science and Nano-technology Research Center, School of Materials Science and Engineering, Shanghai University, Shanghai , China ) Railway Worker College of Qiqihar, Qiqihar , China ) School of Materials Science and Engineering, Shanghai University, Shanghai , China
was synthesized by pressureless reactive sintering process with Bi2O3 and Y2O3 nano mixed powder as raw materials, which was prepared by a chemical coprecipitation process. The study on the behavior of nano......
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Reaction dynamics in the combustion synthesis system of Al-CrO3-Al2O3-NaF-N2-O2
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来源: 《International Journal of Minerals Metallurgy and Materials2007年第3期》——Dazheng Yang,), Yue Zhang), Degang Li ), Dianwei Qi), Wei Deng), and Dayong Xun) ) Angang Steel Company Limited, Anshan , China ) State Key Lab for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing , China
material with heat-resistant and adiabatic characteristics and high strength was prepared using the combustion syn- thesis method by mixed powders of CrO3, Al, Al2O3, and NaF in atmospheric gas......
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Pulsed Nd:YAG laser cladding of high silicon content coating on low silicon steel
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来源: 《International Journal of Minerals Metallurgy and Materials2007年第4期》——Danyang Dong, Changsheng Liu, Bin Zhang, and Jun Miao Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials, Northeastern University, Shenyang , China
was employed to clad low silicon steel with preplaced Si and Fe mixed powders for high Si content. The surface morphology, microstructural evolution, phase composition, and Si distribution, within the obtained......
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Microstructure and mechanical properties of railway wheels manufactured with low-medium carbon Si-Mn-Mo-V steel
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来源: 《International Journal of Minerals Metallurgy and Materials2008年第2期》——Mingru Zhang,) and Haicheng Gu) ) State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an , China ) Technical Center, Maanshan Iron & Steel Co. Ltd., Maanshan , China
. The results indicate that the microstructure of the rim is mainly carbide-free bainite, and the mixed microstructure of bainitic ferrite and granular bainite is observed in web and hub. The mechanical......
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Thermodynamic analysis and preparation of β-SiC/ZrO2 composites
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来源: 《International Journal of Minerals Metallurgy and Materials2009年第5期》——Bei-yue Ma,Jing-kun Yu,Qiang Zhu,and Yong Sun School of Materials and Metallurgy,Northeastern University,Shenyang ,China
on the phase diagram by carbothermal reduction of zircon(ZrSiO4) in argon atmosphere.Zircon and carbon black were mixed according to the C/ZrSiO4 mass ratio of 0.2,and with 0,1wt% and 2wt% extra......
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Periodic flow characteristics during RH vacuum circulation refining
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来源: 《International Journal of Minerals Metallurgy and Materials2010年第1期》——Xin-gang Ai ),Yan-ping Bao ),Wei Jiang ),Jian-hua Liu ),Peng-huan Li ),and Tai-quan Li ) ) Engineering Research Institute,University of Science and Technology Beijing,Beijing ,China ) Journals Publishing Center,University of Science and Technology Beijing,Beijing ,China
whole ladle can be mixed thoroughly after three times of circulation.Increasing the lift gas flow rate can enhance the degassing rate of RH circulation.关键词:......
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Toughening mechanisms of a high-strength acicular ferrite steel heavy plate
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来源: 《International Journal of Minerals Metallurgy and Materials2010年第5期》——Zhi-qiang Cao,), Yan-ping Bao), Zheng-hai Xia), Deng Luo), Ai-min Guo), and Kai-ming Wu) ) Engineering Research Institute, University of Science and Technology Beijing, Beijing , China ) Research & Development Center, Xiangtan Iron and Steel Co. Ltd., Xiangtan , China ) Hubei Province Key Laboratory for Systems Science on Metallurgical Processing, Wuhan University of Science and Technology, Wuhan , China
a tensile strength of approximately 600 MPa with a lower yield ratio. The impact toughness of the heavy plate achieves 280 J at ?40°C. The fine-grained mixed microstructures of the heavy plate mainly consist......
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Grain refinement in the coarse-grained region of the heat-affected zone in low-carbon high-strength microalloyed steels
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来源: 《International Journal of Minerals Metallurgy and Materials2010年第6期》——Ran Wei), Cheng-jia Shang), and Kai-ming Wu) ) International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan , China ) School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing , China
formed prior to bainite packets partition austenite grains into many smaller and separate areas, resulting in fine-grained mixed microstructures. Electron backscattering diffraction analysis indicates......