Abstract
A FEW months ago the phenomenon of the “passive state” of iron was examined by M. L. Varenne, who attributed it to the presence of a film of nitrous acid gas upon the surface of the metal. The question has been recently reinvestigated by M, E, Bibart, who finds reason to doubt M. Varenne's conclusions. M. Bibart states that any oxidising agent aids, and any deoxidising agent hinders, the production of passivity.
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Physical Notes . Nature 24, 179–180 (1881). https://doi.org/10.1038/024179a0
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DOI: https://doi.org/10.1038/024179a0