bower-barff process

1 definition found

bower-barff process - Collaborative International Dictionary of English v.0.48 :

  Bower-Barff process \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 1600[deg] 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 Suppl.]