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Pretreatment study on chloridizing segregation and magnetic separation of low-grade nickel laterites LIU Wan-rong(刘婉蓉)1, LI Xin-hai(李新海)1, HU Qi-yang(胡启阳)1, WANG Zhi-xing(王志兴)1, GU Ke... ____________________________________________________________________________________________ Abstract: The chloridizing segregation and magnetic separation of low-grade nickel laterites from Yunnan province of China was investigated. The nickel laterites were characterized......
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Theoretical investigation of micropolar fluid flow between two porous disksP. Valipour1, S. E. Ghasemi2, M. Vatani3(1. Department of Textile and Apparel, Qaemshahr Branch, Islamic Azad...)Abstract:The steady, laminar, incompressible and two dimensional micropolar flow between two porous disks was investigated using optimal homotopy asymptotic method (OHAM) and fourth order Runge–Kutta......
极化测试表明,镀镍以后的合金在阳极极化过程中发生了明显的钝化,耐腐蚀性能进一步提高,对基体起到了较好的防护作用. 关键词:镁合金；化学转化处理；化学镀镍；耐腐蚀性能 中图分类号:TG 174.4 文献标识码:A Effect of chemical conversion film plus electroless nickel plating... 110016, China) Abstract: In order to improve the corrosion resistance of as cast A291D alloy, electroless nickel plating combined with chemical conversion treatment was investigated in detail......
J. Cent. South Univ. (2021) 28: 1305-1315 DOI: https://doi.org/10.1007/s11771-021-4698-6 Porous layered La0.6Sr0.4Co0.2Fe0.8O3 perovskite with enhanced catalytic activities for oxygen reduction XU... to synthesize La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) perovskite oxide. The obtained porous layered LSCF has a large specific surface area of 23.74 m2/g, four times higher than that prepared by the traditional......
J. Cent. South Univ. (2016) 23: 2483-2491 DOI: 10.1007/s11771-016-3307-6 Effects of Mg content on pore structure and electrochemical corrosion behaviors of porous Al-Mg alloys HE Wen-yuan(何文远)1, 2... Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Porous Al-Mg alloys with different nominal compositions were successfully fabricated via elemental powder reactive......
Preparation and oxygen-sensing properties of TiO2 porous thin films on alumina substrate LI Ming-li(李明利),XU Ming-xia(徐明霞), LI Yan(李 岩) School of Materials Science and Engineering, Key Laboratory... were synthesized with tetrabutyl titanate as precursor, diethanolamine(DEA) as complexing agent , polyethylene glycol (PEG) as organic template. The porous films were prepared by sol-gel method......
Synthesis and Characterization of Electrodeposited Nanocrystalline Nickel DAI Pin-qiang1,YU Hui, LI Qiang1 (1.College of Materials Science and Engineering, FuZhou University, Fuzhou, China) 摘要:Nanocrystalline nickel was synthesize d by direct current electrodeposition from a modified Watts-type bath. X-ray diffraction and transmission electron microscope were used to characterize......
One step method of structure engineering porous graphitic carbon nitride for efficient visible-light photocatalytic reduction of Cr(Ⅵ)Xueru Chen1,Yin Zhang1,Dashui Yuan1,Wu Huang1,Jing Ding1,Hui..., Nanjing Tech University2. Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University摘 要:Porous g-C3......
. Research progress in porous Fe-Al, Ti-Al and Ni-Al intermetallic compound porous materials[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(4): 784-795. [23] REBUK R B. Nickel alloys... between temperature and diameter expansion(a) and open porosity(b) of sintering porous Ni-Cr-Fe, Ni-Cr and Ni-Fe 2.2 多孔材料在烧结过程中的物相变化 图2(a)所示为不同烧结温度下Ni-Cr-Fe多孔材料的XRD谱.由图2(a)可以得知,多孔Ni-Cr-Fe材料的物相形成......
