Patent · US Expired

Novel silicon powder having high purity and density and method of making same

US4661335A · kind A · utility

14Cited by

1References

10Claims

0Family size

Assignee

Rhone-Poulenc Specialities Chimiques · FR

Inventors

Bernard Boudot · Paris, FR
Philippe Nataf · Ville-d'Avray, FR

Key dates

Filing date	Nov 18, 1985
Grant date	Apr 28, 1987
Priority date	—
Expiry date	Nov 18, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B33/029
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A powder of elemental silicon having high purity and a density in excess of about 0.6 g/cm.sup.3, preferably ranging from 0.8 to 1.2 g/cm.sup.3, and which is non-amorphous as determined by X-ray analysis, is facilely prepared by thermally decomposing a silane feedstream at a decomposition reaction temperature ranging from 500.degree. to 700.degree. C., preferably from 500.degree. to 600.degree. C.

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