|  | C |
SECTION C — CHEMISTRY AND METALLURGY

|  | C |
Note(s) Definitions for Section C: Alkali metals: Li, Na, K, Rb, Cs, Fr Alkaline earth metals: Ca, Sr, Ba, Ra Lanthanides: elements with atomic numbers 57 to 71 inclusive Rare earths: Sc, Y, Lanthanides Actinides: elements with atomic numbers 89 to 103 inclusive Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W Halogens: F, Cl, Br, I, At Noble gases: He, Ne, Ar, Kr, Xe, Rn Platinum group: Os, Ir, Pt, Ru, Rh, Pd Noble metals: Ag, Au, Platinum group Light metals: alkali metals, alkaline earth metals, Be, Al, Mg Heavy metals: metals other than light metals Iron group: Fe, Co, Ni Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens Metals: elements other than non-metals Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

METALLURGY

|  | C23 |
WORKING OR TREATMENT OF METALS, OTHER THAN BY MECHANICAL MEANS; COVERING MATERIALS WITH METALS (decorating textiles by metallising Fulltext... Hierarchy... Expanded...D06Q 1/04); INHIBITING CORROSION OR INCRUSTATION IN GENERAL (treating metal surfaces or coating of metals by electrolysis or electrophoresis Fulltext... Hierarchy... Expanded...C25D, Fulltext... Hierarchy... Expanded...C25F) [2]

|  | C23C |
APPARATUS AND PROCESSES FOR WHICH PROVISION IS NOT MADE ELSEWHERE, e.g. IN CLASSES Fulltext... Hierarchy... Expanded...B05, Fulltext... Hierarchy... Expanded...B44 OR IN SUB-CLASSES Fulltext... Hierarchy... Expanded...C03C, Fulltext... Hierarchy... Expanded...C23D, Fulltext... Hierarchy... Expanded...C23F, Fulltext... Hierarchy... Expanded...C25D, Fulltext... Hierarchy... Expanded...F27B, FOR COVERING METALS OR COVERING OTHER MATERIALS WITH METALS; DIFFUSION PROCESSES FOR SURFACE TREATMENT OF METALS

|  | C23C 1/00 |
Covering by treatment with liquid metal, e.g. hot dipping processes (metal spraying Fulltext... Hierarchy... Expanded...C23C 7/00)

|  | C23C 1/02 |
· | Covering with zinc or cadmium or alloys thereof

|  | C23C 1/04 |
· | Covering with tin or alloys thereof

|  | C23C 1/06 |
· | Covering with lead or alloys thereof

|  | C23C 1/08 |
· | Covering with aluminium or alloys thereof

|  | C23C 1/10 |
· | Covering with other metals or alloys

|  | C23C 1/12 |
· | Fluxes or coverings for molten metal baths

|  | C23C 1/14 |
· | Apparatus (furnaces Fulltext... Hierarchy... Expanded...F27)

|  | C23C 1/16 |
· | Rubbing the surface with the molten metal

|  | C23C 3/00 |
Covering with metals by treatment with solutions or suspensions of metal compounds

|  | C23C 3/02 |
· | in the presence of reducing agents

|  | C23C 3/04 |
· | followed by thermal decomposition of the metal compound

|  | C23C 5/00 |
Cladding (mechanical part in the appropriate metal-working classes, e.g. Fulltext... Hierarchy... Expanded...B23K 20/00)

|  | C23C 7/00 |
Metal spraying (apparatus Fulltext... Hierarchy... Expanded...B05B, processes Fulltext... Hierarchy... Expanded...B05D)

|  | C23C 9/00 |
Cementation by diffusion processes using solids or liquids

|  | C23C 9/02 |
· | Box coating with metals, i.e. heating the workpiece in metal dust

|  | C23C 9/04 |
· | Box coating with substances other than metals

|  | C23C 9/06 |
· | Box carburising

|  | C23C 9/08 |
· · | of iron

|  | C23C 9/10 |
· | Cementation by hot dipping in molten salts, e.g. carburising, nitriding, carbo-nitriding

|  | C23C 9/12 |
· · | Carburising iron

|  | C23C 9/14 |
· · | Nitriding iron

|  | C23C 9/16 |
· · | Carbo-nitriding iron

|  | C23C 11/00 |
Gas plating by thermal decomposition or reduction of gases on heated surfaces or by glow or arc discharge followed by diffusion into the surfaces

|  | C23C 11/02 |
· | to form metal coatings, e.g. by carbonyl processes

|  | C23C 11/04 |
· · | Chromising

|  | C23C 11/06 |
· · | Siliconising

|  | C23C 11/08 |
· | to form coatings of inorganic compounds of metals

|  | C23C 11/10 |
· | Gas carburising

|  | C23C 11/12 |
· · | of iron

|  | C23C 11/14 |
· | Gas nitriding; Gas carbo-nitriding

|  | C23C 11/16 |
· · | Nitriding iron

|  | C23C 11/18 |
· · | Carbo-nitriding iron

|  | C23C 13/00 |
Forming coatings on metals by condensation of vapours, e.g. in vacuo; Forming coatings on materials by condensation of metal vapours

|  | C23C 13/02 |
· | coatings of metals

|  | C23C 13/04 |
· | coatings of materials other than metals

|  | C23C 13/06 |
· | Making contoured surfaces, e.g. shadow casting

|  | C23C 13/08 |
· | Apparatus (furnaces Fulltext... Hierarchy... Expanded...F27)

|  | C23C 13/10 |
· · | for continuous working

|  | C23C 13/12 |
· · | Vapour sources, e.g. filament heaters, crucibles, electron bombardment heating apparatus (for gettering in electric discharge tubes Fulltext... Hierarchy... Expanded...H01J 7/18)

|  | C23C 15/00 |
Cathodic sputtering; Apparatus therefor (electric discharge tubes therefor Fulltext... Hierarchy... Expanded...H01J 37/34, Fulltext... Hierarchy... Expanded...H01J 37/36)

|  | C23C 17/00 |
Methods not covered elsewhere for coating materials with metals

|  | C23C 17/02 |
· | by reducing non-metallic coatings to metal