Structure and morphology of electrodeposited CaCO3: X-ray diffraction and microscopy studies

The structure and morphology of electrochemically deposited calcium carbona te have been investigated as a function of temperature, magnesium ion conce ntration, organic inhibitors, and deposition potential. At 25 degrees C, mi crocrystals of calcite grew with their [104] planes parallel to the electro de surface. In the presence of magnesium chloride, a mixed phase of calcite and magensium calcite, as well as aragonite, was formed. Organic inhibitor s varied in their effectiveness in inhibiting calcite formation, e.g., 2-ph osphonobutane, 1,2,4-tricarboxylic acid (PBTC) performed better than ethane diphosphonic acid (EDPA). (C) 1999 The Electrochemical Society. S0013-4651( 98)02-054-0. All rights reserved.