C
SECTION C — CHEMISTRY AND METALLURGY
  
METALLURGY
 C22
METALLURGY (of iron C21); FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS (production of metals by electrolysis or electrophoresis 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 B21, B23, B24, e.g. shot-peening apparatus B24C)
 C22F 1/02
·  in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere 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