Characterization of calcareous deposits in artificial sea water by impedance techniques -: I.: Deposit of CaCO3 without Mg(OH)2

被引：133
作者：
Deslouis, C
Festy, D
Gil, O
Rius, G
Touzain, S
Tribollet, B
机构：
[1] CNRS UPR 15, Phys Liquides & Electrochilmie, F-75252 Paris 05, France
[2] IFREMER, Ctr Brest, Lab Materiaux Marins, F-29280 Plouzane, France
[3] Univ Rochelle, Lab Materiaux & Milieux Agressifs, La Rochelle, France
来源：
ELECTROCHIMICA ACTA | 1998年 / 43卷 / 12-13期
关键词：
scale deposition; impedances; artificial sea-water; mass transport; interfacial pH;
D O I：
10.1016/S0013-4686(97)00303-4
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Calcium carbonate deposits grown under cathodic polarization in the conditions of cathodic protection were characterized by ne and EHD impedances. The transition between a regime dominated by the germination of calcium carbonate crystals and the progressive development of a 3-D (three dimensional) porous layer occurs when the actual current has decreased to half its value measured at time zero where the interface is bare. In particular from the EHD impedance data, it was possible to estimate the average value of the crystals size in the first phase to about 30-50 mu m and the covered fraction from the high frequency capacitance, in perfect agreement with direct SEM examination. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码：1891 / 1901
页数：11
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