WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

C22F　CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F 17/00)

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)

C22F 1/002 ・{by rapid cooling or quenching; cooling agents used therefor}

C22F 1/004 ・{Heat treatment in fluid bed}

C22F 1/006 ・{Resulting in heat recoverable alloys with a memory effect}

C22F 1/008 ・{Using a protective surface layer}

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 1/043 ・・of alloys with silicon as the next major constituent

C22F 1/047 ・・of alloys with magnesium as the next major constituent

C22F 1/05 ・・of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions

C22F 1/053 ・・of alloys with zinc as the next major constituent

C22F 1/057 ・・of alloys with copper as the next major constituent

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 1/165 ・・{of zinc or cadmium or alloys based thereon}

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

C22F 1/183 ・・・{of titanium or alloys based thereon}

C22F 1/186 ・・・{of zirconium 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