Mineral formation on metallic copper in a 'future repository site environment'

摘要

Since reducing conditions are expected, effort has been concentrated on Cu-sulfides and CuFe-sulfides. Oxidizing conditions are also discussed. A list of copper minerals are included. It is concluded that mineral formation and mineral transitions on the copper canister surface will be governed by kinetics and metastabilities rather than by stability relations. The sulfides formed are less likely to form a passivating layer, and the rate of sulfide growth will probably be governed by the rate of transport of reacting species to the canister surface. 82 refs, 8 figs. (Atomindex citation 27:052036)