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Numerical and experimental investigations of weld pool geometry in GTA welding of pure aluminumA. H. Faraji1, A. Bahmani2, M. Goodarzi3, S. H. Seyedein3, M. O. Shabani4(1. Young Researchers Club... model was developed to predict the shape of weld pool in stationary GTA welding of commercial pure aluminium, without considering fluid flow in the weld pool. A Gaussian current density and heat input......
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-heptane (analytic reagent, ＞99%), acetone (analytic reagent, ＞99%), ethanol (analytic reagent, ＞99%), commercially pure nickel sulfate (NiSO4. 6H2O) (＞95%) and deionized water (conductance ＜2.1 μS/cm) were... Preparation of nickel nanoparticles in emulsion ZHANG You-xian(张有贤)1, FU Wen-jie(付文杰)1, AN Xue-qin(安学勤)1, 2 1. College of Resources and Environment, Lanzhou University, Lanzhou 730000, China; 2......
="ChDivSummary" name="ChDivSummary">According to the selection principle of grain refiners and calculation of planar disregistries, CeO2 and TiB2 particles were selected as the grain refiners of pure nickel. The change of grain size and refining effects of different refiners under the same melting conditions were investigated. The results show that the grain size of pure nickel gradually reduces......
J. Cent. South Univ. (2017) 24: 2556-2564 DOI: https://doi.org/10.1007/s11771-017-3669-4 Theoretical and experimental investigation of gas metal arc weld pool in commercially pure aluminum: Effect... and fluid flow during GMAW of commercially pure aluminum are simulated. Finally, the model is applied to study the effect of welding current on the weld pool geometry and the velocity field. Experimental......
concentration in bath: 20 g/L) The embedding of TiO2 nano-particles in the Ni matrix provokes changes in structure of the pure nickel coatings (Fig.1(b)). In detail, the region of [100] oriented deposits... Nickel and nickel-phosphorous matrix composite electrocoatings Nicolas SPYRELLIS, Evangelia A. PAVLATOU, Styliani SPANOU, Alexandros ZOIKIS-KARATHANASIS General Chemistry Laboratory......
In-situ monitoring of nickel electrodeposit structure using electrochemical noise technique YANG Zhong-nian(杨仲年)1, ZHANG Zhao(张 昭) 1, LENG Wen-hua(冷文华) 1, LING Ke(凌 克) 1, ZHANG Jian-qing(张鉴清)1,2...; Abstract: The nickel electroplating process was investigated by means of electrochemical noise(EN), cyclic voltammetry in conjunction with the scanning electron microscopy(SEM......
and morphology of nickel powders are investigated.2 Experimental 2.1 Materials All agents including NiSO4·6H2O, N2H4·H2O, NaOH, ethanol and acetone were analytically pure. The nucleator A is a metallic... Preparation of ultrafine nickel powder by wet chemical process CHEN Rui-ying(陈瑞英), ZHOU Kang-gen(周康根) School of Metallurgical Science and Engineering, Central South University, Changsha 410083......
complex precursors of pure [Ni(N2H4)2]Cl2 and a mixture of [Ni(N2H4)2]Cl2 and [Ni(N2H4)3]Cl2 in aqueous solution. The mechanism of the formation of metallic Ni powders experiences the reduction of nickel... are also investigated. 2 Experimental 2.1 Materials The NiCl2?6H2O, 85% N2H4?H2O, and NaOH (all were analytical pure) were used as the source materials. 2.2 Preparation of nickel powders from......
hydroxide as compared with the pure nickel hydroxide. The charge/discharge tests show that MCNTs addition can improve the specific discharge capacity and increase the discharge voltage of the nickel... with distilled water, and dried at 60 ℃ for 24 h. For comparison, pure nickel hydroxide was also synthesized by the same chemical coprecipitation process without the addition of MCNTs. The same......
