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Direct Electroless Nickel Plating on AZ91D Magnesium Alloy from a Sulfate Solution and its Deposition Mechanism LI Guang-yu1,NIU Li-yuan1,JIANG Zhong-hao1,LIAN Jian-she1,GU Chang-dong1 (1.The Key... Ni on the AZ91D magnesium alloy, containing sulfate nickel, was given in this paper. The nucleation mechanism of Ni-P deposits on the AZ91D magnesium alloy was studied by using XRD and SEM.The......
Effect of Cerium Sulfate on Acidic Electroless Nickel Deposition刘海萍,李宁,毕四富摘 要:The effect of cerium sulfate on bath stability, deposition rate, reaction activation energy and deposit composition in acidic electroless nickel plating solutions was investigated. The influence mechanism of cerium sulfate on electroless nickel was also studied......
Effects of Cerium on Alloy Elements Distribution in Ferrous Matrix Material () Abstract:The effect of the addition of rare earths in Fe-based high chromium alloy powders on elements distribution in matrix materials and mechanical properties were studied. The results show that the addition of cerium can increase the chromium amount in carbonides and increase the micro-hardness after......
Thermodynamic Stability of Sulfate Ions on Calcium Aluminosilicate Hydrate Microstructure胡晨光1,2,DING Qingjun3,FENG Xiaoxin11. College of Materials Science and Engineering,North China University... 要:The thermodynamic stability of sulfate ions on synthesized calcium aluminosilicate hydrate(C-A-S-H) microstructure with different Ca/Si ratios and Al/Si......
Deterioration Mechanisms of Sulfate Attack on Concrete under Alternate Action高润东State Key Laboratory of Hydroscience and Engineering, Tsinghua University摘 要:By micro- and macro-observations, the deterioration mechanisms of concrete under alternate action between repeated sub-high temperature/cooling by water and sodium sulfate solution attack (TW-SA......
of ferrous sulfate solution, Part I[J]. Hydrometallurgy, 2008, 90(2/3/4): 92-102. [14] FUJITA T, TAGUCHI R, ABUMIYA M, et al. Effect of pH on atmospheric scorodite synthesis by oxidation of ferrous ions...; jarosite; basic ferric sulfate 砷是一种剧毒元素,广泛存在于金属矿物中.矿业活动是导致砷污染的重要原因之一[1-2],铜冶炼是产生含砷废水的主要行业,日益严格的环保要求使铜冶炼企业面临前所未有的挑战,因此,铜冶炼过程的含砷废水无害化处理具有重要意义[3-4].长期以来,化学沉淀法[5-6]因具有成本低,沉砷效率高等特点[7],被广泛应用于铜冶炼含砷废水的净化处理[8-9].然......
Synthesis of n-Butyl Acetate by Silica Loaded Cerous Sulfate Catalyst蒋柏泉,叶志强,刘贤相,王敏炜,余晓英,张文龙摘 要:Silica was used, as a catalyst carrier, to load cerous sulfate for catalyzing the synthesis of n-butyl acetate. The main purpose of this research was to explore the feasibility of silica in improving the decentrality and activity of the catalyst. The effects......
Deterioration Mechanism of Sulfate Attack on Concrete under Freeze-thaw CyclesNIU Ditao,JIANG Lei,FEI QiannanSchool of Civil Engineering,Xi’an University of Architecture and Technology摘 要:The experiments of concrete attacked by sulfate solution under freeze-thaw cycles were investigated. The sulfate solution includes two types of 5% Na 2 SO 4 and 5......
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SULFATE RESISTANCE MECHANISM OF HIGH- PERFORMANCE CONCRETE CONTAINING NCIMA Baoguo Wuhan University of Technology摘 要:<正> It is found that the incorporation of Nitrite Corrosion Inhibitor (NCI) greatly weakens the resistance of mixtures to sulfate attack. To study the mechanism of this phenomenon, in this paper, the influence of NCI additionon......
