| Issue |
Matériaux & Techniques
Volume 67, Number 12, 1979
|
|
|---|---|---|
| Page(s) | 423 - 428 | |
| DOI | https://doi.org/10.1051/mattech/19796712423 | |
| Published online | 21 April 2017 | |
Connaissance de l'eau1
Getting acquainted with water
Ecole Nationale Supérieure de Chimie de Paris.
Abstract
The various phenomena linked to the basic equilibria of water with gases (oxygen, carbon dioxide) or ionic substances in solution are gradually explained. The acid-base equilibria of carbonates, together with the low solubility of calcium carbonate are described with their constants, and account for the ionic dissymmetry observed in the equilibrium diagram plotting [total carbon dioxide] against [calcium ions] after MM. Legrand and Poirier. The effect of temperature and ionic strength on constants or activity coefficients is summarized, as well as complex building and precipitation of calcium carbonate as calcite, aragonite or vaterite. Then, kinetic problems are tackled, with metallic wall importance and electrochemical phenomena (crystal germs, precipitating « in situ » or against a wall).
En raison de l'importance technologique de la corrosion des matériaux industriels par les eaux, la Revue MATERIAUX ET TECHNIQUES entreprend ici la publication des textes les plus significatifs présentes au Colloque CEFRACOR 78 « Problèmes de corrosion par les eaux dans les circuits de distribution ».
Cette publication se poursuivra au cours de l'année 1980 et nous remercions le Centre Français de la Corrosion pour son aimable autorisation. N.D.L.R.
Cerclez n° 78.
© SIRPE 1979
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