skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method to produce large, uniform hollow spherical shells

Patent ·
OSTI ID:5705129

Large, uniform hollow spherical shells are produced by forming uniform size drops of heat decomposable or vaporizable material, evaporating the drops to form dried particles, coating the dried particles with a layer of shell forming material, and heating the composite particles to melt the outer layer and decompose or vaporize the inner particle to form an expanding inner gas bubble which expands the outer layer. By cycling the temperature and pressure on the hollow shells, spherical shells with uniform walls are produced.

Assignee:
Dept. of Energy
Patent Number(s):
US 4548767
Application Number:
TRN: 86-017316
OSTI ID:
5705129
Resource Relation:
Patent File Date: Filed date 26 Sep 1983; Other Information: PAT-APPL-535464
Country of Publication:
United States
Language:
English