(19)
(11) EP 0 035 348 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.12.1981 Bulletin 1981/50

(43) Date of publication A2:
09.09.1981 Bulletin 1981/36

(21) Application number: 81300719

(22) Date of filing: 20.02.1981
(84) Designated Contracting States:
BE CH DE FR IT LI NL SE

(30) Priority: 27.02.1980 GB 8006548

(71) Applicants:
  • THE BRITISH INTERNAL COMBUSTION ENGINE RESEARCH INSTITUTE LIMITED
     ()
  • The Secretary of State for Industry in Her Britannic Majesty's Government of the United Kingdom of Great Britain and
     ()

(72) Inventors:
  • Nestorides, Evan John
     ()
  • Dower, Robert John
     ()

   


(54) Sintered bodies of composite materials and their manufacture


(57) A body comprising a mixture of particulate materials is formed by mixing together aluminium and/or an aluminium alloy powder with a proportion of alumina powder, compacting and sintering the resultant mass, and reshaping the resultant mass under pressure after sintering. A body so formed possesses a high hot strength and, by the choice of appropriate proportions of the powdered materials is particularly suitable for forming the crown of an internal combustion engine piston. The invention also relates to the manufacture of such bodies and pistons.






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