|  | 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

|  | C22 |
METALLURGY (of iron Fulltext... Hierarchy... Expanded...C21); FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS (general methods or devices for heat treatment of ferrous or non-ferrous metals or alloys Fulltext... Hierarchy... Expanded...C21D; production of metals by electrolysis or electrophoresis Fulltext... Hierarchy... Expanded...C25)

|  | C22F |
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS

|  | C22F 1/00 |
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal Fulltext... Hierarchy... Expanded...B21, Fulltext... Hierarchy... Expanded...B23, Fulltext... Hierarchy... Expanded...B24, e.g. shot-peening apparatus Fulltext... Hierarchy... Expanded...B24C)

|  | C22F 1/02 |
· | in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere Fulltext... Hierarchy... Expanded...C21D 1/76)

|  | C22F 1/04 |
· | of aluminium or alloys based thereon

|  | C22F 1/06 |
· | of magnesium or alloys based thereon

|  | C22F 1/08 |
· | of copper or alloys based thereon

|  | C22F 1/10 |
· | of nickel or cobalt or alloys based thereon

|  | C22F 1/11 |
· | of chromium or alloys based thereon

|  | C22F 1/12 |
· | of lead or alloys based thereon

|  | C22F 1/14 |
· | of noble metals or alloys based thereon

|  | C22F 1/16 |
· | of other metals or alloys based thereon

|  | C22F 1/18 |
· · | high-melting or refractory metals or alloys based thereon

|  | C22F 3/00 |
Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons

|  | C22F 3/02 |
· | by solidifying a melt controlled by supersonic waves or electric or magnetic fields