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类号: TJ410.3; TG146.4 文献标识码: A Preparation of W-Cu nanopowder by homogeneous precipitation process and its sintering behavior CHENG Ji-gui, LEI Chun-peng, JIANG Yang, WU Yu-cheng, XIA Yong-hong (School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China) Abstract: A novel process, namely homogeneous precipitation by evaporating ammonia, was employed......
, SOIRAT A. Precipitation particle size control [J]. Light Metals, 1999: 71-76. [14] SATAPATHY B K, PADHI T. Determination of grain-size distribution of sandy alumina using electron sensing zone method... Periodical attenuation of Al(OH)3 particles from seed precipitation inseeded sodium aluminate solution WU Yu-sheng(吴玉胜)1, ZHANG Di(张 迪)1, LI Ming-chun(李明春)1, BI Shi-wen(毕诗文)2, YANG Yi-hong......
Preparation of homogeneous ZnO nanoparticles via precipitation-pyrolysis with Zn5(CO3)2(OH)6 as precursor HAN Yue-xin(韩跃新), DING Ya-zhuo(丁亚卓), YIN Wan-zhong(印万忠), MA Zheng-xian(马正先) College... to precisely control particle properties of ZnO by various sophisticated manufacturing processes[1]. ZHANG et al[2] synthesized ZnO nanoparticles by precipitation mechanochemical method. But the milling......
and time-delay. A modeling method based on time-delay fuzzy gray cognitive network (T-FGCN) for the goethite iron precipitation process was proposed in this paper. On the basis of the process mechanism...-delay fuzzy gray cognitive network [J]. Journal of Central South University, 2019, 26(1): 63–74. DOI: https://doi.org/10.1007/s11771-019-3982-1. 1 Introduction The iron precipitation method by leaching......
/g,倍率性能好,振实密度达1.44 g/cm3. 关键词:电极材料；FePO4·xH2O; LiFePO4/C; 电化学性能；均匀沉淀法 中图分类号:TM912.9 文献标志码:A Synthesis and electrochemical performance of LiFePO4/C by homogeneous precipitation... precursor was synthesized by the homogenous precipitation method from FeSO4·7H2O, H3PO4, H2O2 and urea. The influence of surfactant PEG on the morphology of FePO4·xH2O was studied. The LiFePO4/C composites......
precipitates at grain boundaries are the main precipitation strengthening phases in this steel. Among them Cu-rich phase is the most important strengthening phase. Homogeneous distribution of very... phase have been determined by TEM method. Cu-rich phase keeps in about 30 nm till 650 ℃ aging for 10 000 h. It shows that nano-size Cu-rich phase precipitation strengthening can be kept for long time......
method[J]. Materials Letters, 2000, 42: 283-289. [12]Satoshi S, Contreras C, Juarez H, et al. Homogeneous precipitation and thermal phase transformation of mullite ceramic precursor[J]. International... oxalate have regular effect on the average size of products. Key words: nanostructured zirconia; emulsion; homogenous precipitation method; spherical 因为ZrO2拥有许多特殊的性能, 例如低的热导率, 高的机械强度, 高的破......
and growth, quantitative modeling of isothermal precipitation was developed, which was tested by the stress relaxation method, the calculated precipitation-time-temperature curve is in good agreements...MODELING OF ISOTHERMAL PRECIPITATION KINETICS IN HSLA STEELS AND ITS APPLICATION X.M.Zhao1,Z.Y.Liu1,L.Z.Zhang1,D.Wu1 (1.The State Key Lab. of Rolling and Automation, Northeastern University......
; homogeneous method 近年来,四旋翼无人机(quad-rotor vehicle,QRV)因其结构简单且具垂直起降能力而获得广泛关注[1].QRV具有时变和非线性的特点,此外QRV受气动扰动,系统中参数不确定性以及不可避免的未建模动态影响,因此,QRV系统是一种本质不稳定的欠驱动机电系统.要实现QRV系统的高性能控制,必须采取一些强鲁棒性方法来有效抑制系统中各种不确定性和降低未建模动态的影..., 2013, 20(8): 2142-2150. [13] DU Haibo, LI Shihua. Finite-time attitude stabilization for a spacecraft using homogeneous method[J]. Journal of Guidance, Control and Dynamics, 2012, 35(3):740-748. [14......
Synthesis and Characterization of Mesoporous Alumina via a Reverse Precipitation MethodY.S.Wu,J.Ma,F.Hu and M.C.Li College of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China摘 要:Mesoporous alumina γ-Al2O3 with high specific surface area and large pore volume is prepared by using a facile reverse precipitation......
