Effects of Copper-Zinc Alloy Doped with Rare Earth Elements on Crystal of Calcium Carbonate
A copper-zinc alloy doped with rare earth elements was prepared and the mechanism was demonstrated in a simulating boiler and circulating cooling water with rigidity 1mmol·L<,-1>. The polar curve and scale inhibiting ability of the alloy was tested by a corrosion measurement system and a scale inhibition evaluation system, respectively. Scale samples were characterized with SEM and XRD. It is found that the transfer of cations could be promoted by doping with proper rare earth elements, and the corrosion potentials descend by 25~126mV. The results indicated that the copper-zinc alloy doped with rare earth elements has higher scale inhibiting ability of CaCO<,3>. The growth of calcite was affected by zinc ions dissolved because of primary battery reaction, and the transition of calcium carbonate from aragonite to calcite was hampered resulting in the proportion of aragonite to calcite is changed from 1.7∶1 to 2.7∶1.
rare earth elements copper-zinc alloy calcium carbonate calcite aragonite scale inhibit crystal
Ding Yan(丁燕) Nie Lei(聂磊) Liang Jinsheng(梁金生) Tang Qingguo(汤庆国) Chen Manman(陈蔓蔓)
Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
448-451
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）