The kinetics of mercury corrosion of various conventional materials of construction were studied in glass, reflux-type capsules with two-phase mercury at temperatures from 600 to 1000 F (316 to 538 C). These studies have shown that although corrosion may proceed initially at a linear rate, steady-state corrosion is essentially diffusion rate-controlled for metals which develop a corrosion layer barrier.

Penetration and weight loss plots are presented for representative alloys. Arrhenius-type plots of parabolic corrosion rate constants show essentially linear behavior with temperature for a given material. These results were substantiated in thermal convection two-phase natural circulation loop tests.

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© 1964 National Association of Corrosion Engineers
1964
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