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Aging Precipitation Characterics of Lead Frame Cu-Cr-Zr-Mg Alloy LI He-jun1,KANG Bu-xi2,DONG Qi-ming2,LIU Ping2,SU Jua-hua2 (1.Northwestern Polytechnical University, Xi'an China;2.Henan University..., 73%IACS and 106HV, 76%IACS, respectively. Aging precipitation was dealt with by transmission electronic microscope (TEM). At 470℃ aging for 4h the fine precipitation of an ordered compound CrCu2(Zr, Mg......
Flow-injection spectrophotometric determination of vanadium with malachite green oxalate by bromate in acidic and micellar mediumMohsen Keyvanfarda1,Narges Abedib21. Faculty of Science,Majlesi Branch...). The method is based on its catalytic effect on the oxidation of malachite green oxalate by bromate. The reaction was monitored spectrophotometrically by measuring malachite green oxalate absorbance......
of sodium oxalate on the precipitation of alumina trihydrate from synthetic sodium aluminate liquors [J]. Light Metals, 1993: 125-129.  ... precipitation during alumina production LIU Ji-bo, WANG Ya-dong, LIU Zhi-ming, LI Wang-xing (Zhengzhou of Research Institute, Aluminum Corporation of China Limited, Zhengzhou 450041, China......
MODELING OF STRAIN-INDUCED PRECIPITATION KINETICS IN Nb MICROALLOYED STEELS D. Wu1,C.M. Li2,X.G. Zhou1,Z.Li3,Z.Y. Liu1 (1.State Key Lab. of Rolling and Automation, Northeastern University, Shenyang...:On the basis of the thermodynamic calculation of precipitation and considering the effect of strain on the precipitation behavior and chemical composition (Si and Mn), the kinetics of precipitation......
, and difficult slurry filtration [2-6]. Moreover, sodium oxalate deteriorates the settlement property of red mud and promotes the formation of scales in evaporation equipment and precipitation tanks [7,8]. Sodium oxalate, together with sodium carbonate and sodium sulfate in aluminate solution, further accelerates the formation of scales on equipment surface and exacerbates seeded precipitation [9]. Sodium......
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J. Cent. South Univ. Technol. (2008) 15: 622-626 DOI: 10.1007/s11771-008-0116-6 Effect of tetracarbon additives on gibbsite precipitation from seeded sodium aluminate liquor ZENG Ji-shu(曾纪术... and tetrahydrofurane on gibbsite precipitation from caustic seeded sodium aluminate liquor were investigated. The additive was charged into supersaturated seeded sodium aluminate liquor, then the precipitation ratio......
Effect of Carrier Liquid on Electrorheological Performance and Stability of Oxalate Group-modified TiO2 Suspensions马宁1,董旭峰21. School of Civil Engineering, Dalian University of Technology2. School of Materials Science and Engineering,Dalian University of Technology摘 要:By using oxalate group-modified TiO2 nanoparticles as the dispersing phase, different......
章编号:1672-7207(2011)02-0317-06 Extraction of cobalt with P507 and preparation of cobalt oxalate powders by ethane diacid stripping ZHANG Yang, MAN Rui-lin, WANG Hui, LIANG Yong-huang (School... out using P507, and cobalt oxalate was directly prepared by stripping with oxalic acid. The initial concentration of cobalt in feed solution was 53.8 g/L. The results show that the optimal extraction......
Controlled Synthesis of Core-Shell Nickel Microspheres with Solid Core and Porous Shell by Precipitation and Thermal Decomposition Method李涛1,2,MA Guohua3,CHEN Jian4,GONG Yong41. School of Mechanical... and Technology4. Sichuan University of Science & Engineering Material Corrosion and Protection Key Laboratory of Sichuan Province摘 要:Nickel oxalate micro-spheres......