Metals
METALLURGY OF IRON
Manufacture of iron or steel
General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering
Process control or regulation for heat treatments
Heat treatment of ferrous alloys
Modifying the physical properties of iron or steel by deformation
Modifying the physical properties by deformation combined with, or followed by, heat treatment
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles
METALLURGY; FERROUS OR NONFERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
Preliminary treatment of ores or scrap
Obtaining noble metals
Obtaining lead
Obtaining copper
Obtaining zinc or zinc oxide
Obtaining aluminium
Obtaining nickel or cobalt
Obtaining alkali, alkaline earth metals or magnesium
Extraction of metal compounds from ores or concentrates by wet processes
Obtaining refractory metals
Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
General processes of reducing to metals
Obtaining metals of atomic number 87 or higher
Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
General processes of refining or remelting of metals
Making alloys
Alloys based on tin
Alloys based on titanium
Alloys based on zirconium
Alloys based on zinc
Alloys based on nickel or cobalt
Alloys based on aluminium
Alloys based on magnesium
Alloys containing diamond
Alloys based on rhenium or a refractory metal not mentioned in groups C22C 14/00 or C22C 16/00
Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides
Alloys containing less than 50% by weight of each constituent
Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
Making ferrous alloys
Cast-iron alloys
Ferrous alloys, e.g. steel alloys
Amorphous alloys
Making alloys containing metallic or non-metallic fibres or filaments
Alloys containing metallic or non-metallic fibres or filaments
Alloys based on noble metals
Alloys based on copper
Changing the physical structure of non-ferrous metals or non-ferrous alloys
Indexing scheme associated with subclasses C 21 D, C 22 C or F, relating to changing the physical characteristics of alloys
COATINGMETALLIC MATERIAL; COATINGMATERIALWITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OFMETALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
Solid state diffusion of only metal elements or silicon into metallic material surfaces
Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape
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
Coating starting from inorganic powder
Coating not provided for in groups C23C 2/00-C23C 24/00
Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C 2/00-C23C 26/00, or by combinations of methods provided for in subclasses C23C and C25C or C25D
Coating with metallic material characterised only by the composition of the metallic material
Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
Solid state diffusion of only non-metal elements into metallic material surfaces
Enamelling of, or applying a vitreous layer to, metals
Cleaning or de-greasing of metallic material by chemical methods other than electrolysis
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
Electrolytic production of inorganic compounds or non-metals
Electrodes
Diaphragms
Operating or servicing of cells
Electrolytic production of organic compounds
Cells or assemblies of cells
Processes for the electrolytic production, recovery or refining of metals; Apparatus therefor
Electroforming
Electrolytic coating by surface reaction
Electrophoretic coating
Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
Constructional parts, or assemblies thereof, of cells for electrolytic coating
Processes for servicing or operating cells for electrolytic coating
Electroplating
Electroplating characterised by the process
Electroplating characterised by the article coated
Electrolytic coating other than with metals
Processes for the electrolytic removal of materials from objects; Apparatus therefor
See Also: Shaping