IPC 6 English version  C23C02000-C23C03000
 << C23C 12/00 - C23C 18/54    
SECTION C– CHEMISTRY; METALLURGY

C 23

COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL (by metallising textiles D 06 M 11/83; decorating textiles by locally metallising D 06 Q 1/04); CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (for specific applications, see the relevant places, e.g. for manufacturing resistors H 01 C 17/06); INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL (treating metal surfaces or coating of metals by electrolysis or electrophoresis C 25 D, C 25 F) [2]

C 23 C

COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (applying liquids or other fluent materials to surfaces in general B 05; making metal-coated products by extrusion B 21 C 23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B 21 D 39/00, B 23 K; working of metal by the action of a high concentration of electric current on a workpiece using an electrode B 23 H; metallising of glass C 03 C; metallising mortars, concrete, artificial stone, ceramics or natural stone C 04 B 41/00; paints, varnishes, laquers C 09 D; enamelling of, or applying a vitreous layer to, metals C 23 D; inhibiting corrosion of metallic material or incrustation in general C 23 F; single-crystal film growth C 30 B; manufacture of semiconductor devices H 01 L; manufacture of printed circuits H 05 K) [4]

20/

00

Chemical coating by decomposition of either solid compounds or suspensions of the coating forming compounds, without leaving reaction products of surface material in the coating (chemical surface reaction C 23 C 8/00, C 23 C 22/00) [4]

Note

This group covers also suspensions containing non-reactive liquids and reactive solid particles. [4]

20/

02

. 

Coating with metallic material [4]

20/

04

. . 

with metals [4]

20/

06

. 

Coating with inorganic material, other than metallic material [4]

20/

08

. . 

with compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides [4]
Chemical surface treatment of metallic material by reaction of the surface with a reactive medium (with a reactive gas C 23 C 8/00) [4]

22/

00

Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals (wash primers C 09 D 5/12) [4]

Notes

(1)

This group covers also suspensions containing reactive liquids and non-reactive solid particles. [4]

(2)

In groups C 23 C 22/02 to C 23 C 22/86, in the absence of an indication to the contrary, classification is made in the last appropriate place. [4]

(3)

Rejuvenating of the bath is classified in the appropriate place for the specific bath composition. [4]

22/

02

. 

using non-aqueous solutions [4]

22/

03

. . 

containing phosphorus compounds [4]

22/

04

. . 

containing hexavalent chromium compounds [4]

22/

05

. 

using aqueous solutions [5]

22/

06

. . 

using aqueous acidic solutions with pH<6 [4,5]

22/

07

. . . 

containing phosphates [4,5]

22/

08

. . . . 

Orthophosphates [4,5]

22/

10

. . . . . 

containing oxidants [4,5]

22/

12

. . . . . 

containing zinc cations [4,5]

22/

13

. . . . . . 

containing also nitrate or nitrite anions [4,5]

22/

14

. . . . . . 

containing also chlorate anions [4,5]

22/

16

. . . . . . 

containing also peroxy-compounds [4,5]

22/

17

. . . . . . 

containing also organic acids [4,5]

22/

18

. . . . . 

containing manganese cations [4,5]

22/

20

. . . . . 

containing aluminium cations [4,5]

22/

22

. . . . . 

containing alkaline earth metal cations [4,5]

22/

23

. . . . 

Condensed phosphates [4,5]

22/

24

. . . 

containing hexavalent chromium compounds [4,5]

22/

26

. . . . 

containing also organic compounds [4,5]

22/

27

. . . . . 

Acids [4,5]

22/

28

. . . . . 

Macromolecular compounds [4,5]

22/

30

. . . . 

containing also trivalent chromium [4,5]

22/

32

. . . . 

containing also pulverulent metals [4,5]

22/

33

. . . . 

containing also phosphates [4,5]

22/

34

. . . 

containing fluorides or complex fluorides [4,5]

22/

36

. . . . 

containing also phosphates [4,5]

22/

37

. . . . 

containing also hexavalent chromium compounds [4,5]

22/

38

. . . . . 

containing also phosphates [4,5]

22/

40

. . . 

containing molybdates, tungstates or vanadates [4,5]

22/

42

. . . . 

containing also phosphates [4,5]

22/

43

. . . . 

containing also hexavalent chromium compounds [4,5]

22/

44

. . . . 

containing also fluorides or complex fluorides [4,5]

22/

46

. . . 

containing oxalates [4,5]

22/

47

. . . . 

containing also phosphates [4,5]

22/

48

. . . 

not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates [4,5]

22/

50

. . . . 

Treatment of iron or alloys based thereon [4,5]

22/

52

. . . . 

Treatment of copper or alloys based thereon [4,5]

22/

53

. . . . 

Treatment of zinc or alloys based thereon [4,5]

22/

54

. . . . 

Treatment of refractory metals or alloys based thereon [4,5]

22/

56

. . . . 

Treatment of aluminium or alloys based thereon [4,5]

22/

57

. . . . 

Treatment of magnesium or alloys based thereon [4,5]

22/

58

. . . . 

Treatment of other metallic material [4,5]

22/

60

. . 

using alkaline aqueous solutions with pH>8 [4,5]

22/

62

. . . 

Treatment of iron or alloys based thereon [4,5]

22/

63

. . . 

Treatment of copper or alloys based thereon [4,5]

22/

64

. . . 

Treatment of refractory metals or alloys based thereon [4,5]

22/

66

. . . 

Treatment of aluminium or alloys based thereon [4,5]

22/

67

. . . . 

with solutions containing hexavalent chromium [4,5]

22/

68

. . 

using aqueous solutions with pH between 6 and 8 [4,5]

22/

70

. 

using melts [4]

22/

72

. . 

Treatment of iron or alloys based thereon [4]

22/

73

. 

characterised by the process [4]

22/

74

. . 

for obtaining burned-in conversion coatings [4]

22/

76

. . 

Applying the liquid by spraying [4]

22/

77

. . 

Controlling or regulating of the coating process (controlling or regulating in general G 05) [4]

22/

78

. 

Pretreatment of the material to be coated [4]

22/

80

. . 

with solutions containing titanium or zirconium compounds [4]

22/

82

. 

After-treatment [4]

22/

83

. . 

Chemical after-treatment [4]

22/

84

. . 

Dyeing [4]

22/

86

. 

Regeneration of coating baths [4]

24/

00

Coating starting from inorganic powder (spraying of the coating material in molten state C 23 C 4/00; solid state diffusion C 23 C 8/00 to C 23 C 12/00; manufacture of composite layers, workpieces or articles by sintering metallic powder B 22 F 7/00; friction welding B 23 K 20/12) [4]

24/

02

. 

by application of pressure only [4]

24/

04

. . 

Impact or kinetic deposition of particles [4]

24/

06

. . 

Compressing powdered coating material, e.g. by milling [4]

24/

08

. 

by application of heat or pressure and heat (C 23 C 24/04 takes precedence) [4]

24/

10

. . 

with intermediate formation of a liquid phase in the layer [4]

26/

00

Coating not provided for in groups C 23 C 2/00 to C 23 C 24/00 [4]

26/

02

. 

applying molten material to the substrate (applying melts to surfaces, in general B 05) [4]

28/

00

Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C 23 C 2/00 to C 23 C 26/00, or by combinations of methods provided for in subclasses C 23 C and C 25 C or C 25 D [4]

28/

02

. 

only coatings of metallic material [4]

28/

04

. 

only coatings of inorganic non-metallic material [4]

30/

00

Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process (C 23 C 26/00, C 23 C 28/00 take precedence) [4]
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