Patent · US Active

Frangible, ceramic-metal composite objects and methods of making the same

US8028626B2 · kind B2 · utility

10Cited by
30References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 6, 2010
Grant dateOct 4, 2011
Priority date—
Expiry dateFeb 4, 2030

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF42B30/02
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

In making frangible objects, including lead-free bullets and other projectiles, powdered metal primary and powdered ceramic secondary phases are mixed and densified at an elevated temperature such that the ceramic phase forms a brittle network. Any combination of metal and ceramic phases may be used to achieve desired chemical and physical properties. Any appropriate mixing, forming, and/or thermal processing methods and equipment may be used. Degrees of frangibility, strength, and toughness can be adjusted to suit a given application by precursor selection, degree of mixing, relative amounts of metal and ceramic phases, forming method, and thermal and mechanical processing parameters.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.