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Effect of high temperature pretreatment on the thermal resistance properties of Pd/CeO2/Al2O3 close-coupled catalysts黄木兰1,王苏宁2,兰丽1,张海龙2,史忠华1,3,4,陈耀强1,3,41. Key Laboratory of Green Chemistry... without pretreatment. H2-TPR and XPS results also implied that the interaction between well-crystallized CeO2 and Pd suppressed the deactivation of PdO sites and further enhanced the catalytic performance......
Effect of high temperature pretreatment on the thermal resistance properties of Pd/CeO2/Al2O3 close-coupled catalysts黄木兰1,王苏宁2,兰丽1,张海龙2,史忠华1,3,4,陈耀强1,3,41. Key Laboratory of Green Chemistry... without pretreatment. H2-TPR and XPS results also implied that the interaction between well-crystallized CeO2 and Pd suppressed the deactivation of PdO sites and further enhanced the catalytic performance......
Surface pretreatment of Mg alloys prior to Al electroplating in TMPAC-AlCl3 ionic liquids LIU Quan, LIU Kui-ren, HAN Qing, TU Gan-feng School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China Received 30 October 2010; accepted 27 May 2011 Abstract: It is difficult to directly electroplate Al on Mg alloys. The effects of pretreatment parameters on the corrosion......
Effect of silicate pretreatment, post-sealing and additives on corrosion resistance of phosphated galvanized steel XU Yu-ye(徐玉野)1, LIN Bi-lan(林碧兰)2 1. College of Civil Engineering, Huaqiao... (water glass) pretreatment before phosphating, silicate post-sealing after phosphating and adding silicate to a traditional phosphating solution were respectively carried out to obtain the improved......
to achieve directly via welding.In this study,we designed a laser processing pretreatment on the Al alloy to create a deep porous Al surface structure,which was successfully joined to the polypropylene......
锂云母在铁水预处理中对CaO-FeO-CaF2渣系脱磷的影响李进1,王一成2,王明林2,仇圣桃2(1.云南省昆明市昆明理工大学冶金与能源工程学院2.钢铁研究总院 连铸技术国家工程研究中心,北京 100081)摘 要:在实验室1 340~1 360℃条件下,进行了CaO-FeO-CaF2渣系中添加锂云母的铁水预处理脱磷试验.研究了锂云母添加量对渣系熔点和脱磷效果的影响,以及(CaO+锂云母)/FeO对脱磷的影响.研究结果表明:CaO-FeO-CaF2渣系随锂云母含量的增加,渣系熔点逐渐降低;在1 340~1 36......
Novel Pretreatment of Hard Metal Substrate for Better Performance of Diamond Coated Cutting Tools LU Fan-xiu1,CHEN Guang-chao1,MIAO Jin-qi1,HE Li-fu1,TANG Wei-zhong1,LI Cheng-ming1 (1.University of Science and Technology Beijing, Beijing 100083, China) 摘要:A surface engineering approach for a novel pre-treatment of hard metal tool substrate for optimum adhesion of diamond coatings is presented......
Combined method of plastic work piece machining based on a pretreatment mechanical downERENKOV O Y,KOVALCHUK S A,GAVRILOVA A V摘 要:An analysis of polymer materials behavior under cutting forces load was presented.The analysis was accomplished taking into account the existence and interaction of micro cracks in material.On the basis of modeling......
Pretreatment of lead anode slime with low silver by vacuum distillation for concentrating silverLI Liang(李亮)1,2,3, TIAN Yang(田阳)1,2, LIU Da-chun(刘大春)1,2,3, ZHOU Hou-jun(周厚军)1,2, DAI Yong-nian(戴永年) 1,2, YANG Bin(杨斌)
铂钯精矿预处理脱硒碲试验研究邓成虎1(1.江西省鹰潭市贵溪市江西铜业集团公司贵溪冶炼厂)摘 要:对由铜阳极泥产出的铂钯精矿,采用氧化焙烧-碱浸-酸浸预处理工艺除去硒碲,富集金铂钯,确定了最佳工艺条件.硒,碲脱除率分别达到98.53%,95.27%,浸出渣中碲质量分数为5.18%,硒质量分数为0.29%,为后续工序分离提纯贵金属创造了有利条件.关键词:铂钯精矿； 预处理； 硒； 碲......
