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  • C23C8/00
    		•  Solid state diffusion of only non-metal elements into metallic material surfaces (diffusion of silicon C23C 10/00); Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals (C23C 14/00 takes precedence) [4] HB CC 4K028
  • C23C8/02
    		•  .Pretreatment of the material to be coated (C23C 8/04 takes precedence) [4] HB CC 4K028
  • C23C8/04
    		•  .Treatment of selected surface areas, e.g. using masks [4] HB CC 4K028
  • C23C8/06
    		•  .using gases [4] HB CC 4K028
  • C23C8/08
    		•  ..only one element being applied [4] HB CC 4K028
  • C23C8/10
    		•  ...Oxidising [4] HB CC 4K028
  • C23C8/12
    		•  ....using elemental oxygen or ozone [4] HB CC 4K028
  • C23C8/14
    		•  .....Oxidising of ferrous surfaces [4] HB CC 4K028
  • C23C8/16
    		•  ....using oxygen-containing compounds, e.g. H2O, CO2 [4] HB CC 4K028
  • C23C8/18
    		•  .....Oxidising of ferrous surfaces [4] HB CC 4K028
  • C23C8/20
    		•  ...Carburising [4] HB CC 4K028
  • C23C8/22
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/24
    		•  ...Nitriding [4] HB CC 4K028
  • C23C8/26
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/28
    		•  ..more than one element being applied in one step [4] HB CC 4K028
  • C23C8/30
    		•  ...Carbo-nitriding [4] HB CC 4K028
  • C23C8/32
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/34
    		•  ..more than one element being applied in more than one step [4] HB CC 4K028
  • C23C8/36
    		•  ..using ionised gases, e.g. ionitriding [4] HB CC 4K028
  • C23C8/38
    		•  ...Treatment of ferrous surfaces [4] HB CC 4K028
  • C23C8/40
    		•  .using liquids, e.g. salt baths, liquid suspensions [4] HB CC 4K028
  • C23C8/42
    		•  ..only one element being applied [4] HB CC 4K028
  • C23C8/44
    		•  ...Carburising [4] HB CC 4K028
  • C23C8/46
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/48
    		•  ...Nitriding [4] HB CC 4K028
  • C23C8/50
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/52
    		•  ..more than one element being applied in one step [4] HB CC 4K028
  • C23C8/54
    		•  ...Carbo-nitriding [4] HB CC 4K028
  • C23C8/56
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/58
    		•  ..more than one element being applied in more than one step [4] HB CC 4K028
  • C23C8/60
    		•  .using solids, e.g. powders, pastes (using liquid suspensions of solids C23C 8/40) [4] HB CC 4K028
  • C23C8/62
    		•  ..only one element being applied [4] HB CC 4K028
  • C23C8/64
    		•  ...Carburising [4] HB CC 4K028
  • C23C8/66
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/68
    		•  ...Boronising [4] HB CC 4K028
  • C23C8/70
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/72
    		•  ..more than one element being applied in one step [4] HB CC 4K028
  • C23C8/74
    		•  ...Carbo-nitriding [4] HB CC 4K028
  • C23C8/76
    		•  ....of ferrous surfaces [4] HB CC 4K028
  • C23C8/78
    		•  ..more than one element being applied in more than one step [4] HB CC 4K028
  • C23C8/80
    		•  .After-treatment [4] HB CC 4K028
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