Thesaurus: bower-barff process

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1. 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).
2. A certain process for producing upon articles of iron or steelan adherent coating of the magnetic oxide of iron (which is notliable to corrosion by air, moisture, or ordinary acids). This isaccomplished by producing, by oxidation at about 1600º F. in a closedspace, a coating containing more or less of the ferric oxide (Fe2O3)and the subsequent change of this in a reduced atmosphere to themagnetic oxide (Fe2O4).