CORROSION OF new theory explains the inhibition of IRON SURFACES

The thin film which confers passivity to iron surfaces and thus inhibits corrosion is a three‐dimensional oxide, according to recent N.B.S. results. This finding controverts other theories which have held that the film is either an adsorbed oxygen monolayer, or that oxygen is first adsorbed and then converted to an oxide in the passivating process.