WORKING METALLIC POWDER

**Definition:** This place covers:

Metallic powders per se.

Treatment of metallic powder, e.g. thermal, thermo-mechanical or chemical treatments, making agglomerates.

Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering or by the special shape of the product.

Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting.

Manufacture of articles from scrap or waste metal particles.

Making metallic powder or suspensions thereof using physical or chemical processes.

Powder metallurgical apparatus or equipment specifically adapted therefor, e.g. furnaces, retorts or sintering apparatus.

Additive manufacturing of workpieces or articles from metallic powder and apparatus or devices therefor.

**Limiting references (this place does not cover):** - Making non-ferrous alloy compositions by powder metallurgy -> C22C1/04 - Making non-ferrous alloys from mixtures of metallic powder with non-metallic powder -> C22C1/05 - Alloys containing diamond -> C22C26/00 - Alloys based on metal compounds, e.g. cermets -> C22C29/00 - Non-ferrous alloys containing metal compounds -> C22C32/00 - Making ferrous alloys by powder metallurgy -> C22C33/02 - Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy -> C22C47/14

**Glossary:** - Compacting: join or press firmly together. - Sintering: forming powder into a coherent mass by heating the powder whereby adjacent particles are joined by diffusion or superficial melting. - Alloy: a composition of plural elements at least one of which is a metal in the oxidation state zero. Also includes material containing any combination of fibres, filaments, whiskers and particles, e.g. carbides, diamond, oxides, borides, nitrides or sulfides, embedded in a metallic matrix. - Furnace: covers kilns, ovens or retorts