Bow"er-Barff" proc`ess . (Metal.)
A certain
process for producing upon articles of iron or steel an adherent
coating of the magnetic oxide of iron (which is not liable to
corrosion by air, moisture, or ordinary acids). This is accomplished
by producing, by oxidation at about 1600o F. in a closed space, a
coating containing more or less of the ferric oxide
(Fe2O3) and the subsequent change of this in a
reduced atmosphere to the magnetic oxide
(Fe2O4).
© Webster 1913.