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普通低碳钢与细晶粒钢钝化膜在碱性介质中的耐蚀性施锦杰1,孙伟1,耿国庆1(1.江苏省南京市东南大学材料科学与工程学院江苏省土木工程材料重点实验室)摘 要:应用循环伏安与动电位极化曲线确定普通低碳钢与细晶粒钢在碱性介质(模拟混凝上孔隙液)中的钝化区域.利用计时电流法在选取的阳极极化电位下使钢筋生成稳定的钝化膜,并通过电化学阻抗谱,Mott-Schottky曲线比较了钢筋在不同阳极电位下形成的钝化膜的优劣性;其次,循环极化曲线对比分析了在有无Cl~-存在时普通低碳钢与细晶粒钢钝化膜的耐蚀性.结果表明,2种钢筋的公共......
FeSO4/H2O2处理硅钢废水试验研究张文艺1,2,罗鑫1,李秋艳2,姚立荣2,李定龙2,张千峰-2(1.江苏省常州市常州大学环境与安全工程学院2.安徽省马鞍山市安徽工业大学 冶金学院)摘 要:针对硅钢钝化液废水利用NaHSO3处理Cr6+,CODCr超标的难题,改用FeSO4和H2O2为处理剂,利用Fe2+的还原性和在酸性条件下Fe2+与H2O2形成Fenton试剂的催化氧化特性,对废水中的Cr6+和CODCr进行同步去除.FeSO4/H2O2处理硅钢钝化液废水适宜参数为:n(Fe2+)∶n(H2O2)=1......
of nitric acid passivation was investigated to enhance the general corrosion resistance of biomedical high-nitrogen nickel-free stainless steels(HNSs).After passivation,the corrosion rate of HNS could......
Alternating Pulse Current in Eiectrocoagulation for Wastewater Treatment to Prevent the Passivation of Al ElectrodeMAO Xuhui~1 HONG Song~(1*) ZHU Hua~1 LIN Hui~1 WEI Lin~1 GAN Fuxing~(1,2) (1.School...="ChDivSummary" name="ChDivSummary"><正>A novel current feed style,alternating pulse current,was proposed in electrocoagulation aiming at preventing the passivation of electrode materials.The open......
Corrosion action and passivation mechanism of magnesium alloy in fluoride solution LI Jian-zhong(李建中)1, 2, HUANG Jiu-gui(黄久贵)2, TIAN Yan-wen(田彦文)1, LIU Chang-sheng(刘常升)1 1. School of Metallurgy... of Mg/F on the magnesium alloy surface is fixed at 11.3?1. The activated magnesium alloy gains a ‘passivation state’ in a mixture of sulfuric acid and hydrofluoric acid at a volume ratio of less than......
Comparative study on the passivation layers of copper sulphide minerals during bioleachingKai-bin Fu 1,2),Hai Lin 1),Xiao-lan Mo 1),Han Wang 1),Hong-wei Wen 1),and Zi-long Wen 1) 1) School of Civil... is cracked.The compact surface layer of porphyry chalcopyrite may strongly hinder copper extraction.X-ray photoelectron spectroscopy(XPS) further confirms that the passivation layers of covellite,pyritic......
Electrochemical adsorption and passivation on gold surface in alkaline thiourea solutionsWen-Juan Li1,2,3,He Zhou2,An-Ping Bai4,Yong-Sheng Song2,3,Liu-Lu Cai2,3,Shui-Lin Zheng1,Qi-Dong Zhang2,3,Song... and Social Security摘 要:An electrochemical method was used to examine Au surface absorption and passivation under the most commonly employed pH conditions......
Passivation of Ge surface treated with trimethylaluminum and investigation of electrical properties of HfTiO/Ge gate stacksJuan Gao1,2,Gang He1,Dongqi Xiao1,Peng Jin1,Shanshan Jiang1,Wendong... and Technology摘 要:In the current work, in situ surface passivation Ge substrate by using trimethylaluminum(TMA) prior to HfTiO films deposition......
Synergistic Effect of Mo, W, Mn and Cr on the Passivation Behavior of a Fe-Based Amorphous Alloy CoatingWan-Ping Tian1,2,Hong-Wang Yang1,Suo-De Zhang21. School of Materials Science and Engineering... anodic potentials in the potentiostatic polarization. In order to understand the passivation mechanism of the Fe-based amorphous coating, the components of the passive films formed at various......
Passivation of Insoluble Anode from Ti-base Alloys in Preparation of Electrolytic MnO_2俞征,杨生恕摘 要:PassivationofInsolubleAnodefromTi-baseAlloysinPreparationofElectrolyticMnO_2YuZhengandYangShengshu(俞征)(杨生恕)DepartmentofChemis...关键词:......