Process for production of metal-metalmetalloid powders with their articles having ultramicrocrystalline to nanocrystalline structure
AssigneeFried. Krupp Gesellschaft mit beschrankter Haftung
InventorsHans Grewe, Wolfgang Schlump
Life of this patent
Estimating the term…
Abstract
A process for producing metal metalmetalloid powder, with its particles having ultramicrocrystalline structures to nanocrystalline structures with the metalmetalloid component being composed of at least one metal reacted with at least one metalloid of the group including C, N, O, H, B, and Si. The metalloids, C, N, O, H, B, and Si are introduced in a highly reactive form together with powders of the metals of the matrix metal and of the metals of the metalmetalloid component into a high energy mill to produce a metal-metalmetalloid powder with its particles having a ultramicrocrystalline to nanocrystalline structure both in the metal matrix and in the metal metalloid component.
Claims7
A process for producing a metal-metalmetalloid powder comprising a metal matrix and a metalmetalloid component including particles having an ultramicrocrystalline to nanocrystalline structure both in the metal matrix and in the metalmetalloid component, said process comprising the steps of:
- mixing a metal powder consisting essentially of the intended matrix metal with a second metal powder to form a first powder mixture,
- adding at least one metalloid selected from the group consisting of C, N, O, H, B, Si in a highly reactive solid or gaseous form, to said first powder mixture to form a second powder mixture consisting of said metalloid, said matrix metal powder, and said second metal powder, and
- milling said second powder mixture with high energy in a mill, so as to react said second metal powder with said metalloid to produce a third powder mixture including a metalmetalloid component and said matrix metal, said third powder mixture comprising particles having an ultramicrocrystalline to nanocrystalline structure both in the matrix metal and in the metalmetalloid component.
Dependencies are inferred from the claim text.