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Title: Method of forming cavitated objects of controlled dimension

Patent ·
OSTI ID:864271

A method of controllably varying the dimensions of cavitated objects such as hollow spherical shells wherein a precursor shell is heated to a temperature above the shell softening temperature in an ambient atmosphere wherein the ratio of gases which are permeable through the shell wall at that temperature to gases which are impermeable through the shell wall is substantially greater than the corresponding ratio for gases contained within the precursor shell. As the shell expands, the partial pressures of permeable gases internally and externally of the shell approach and achieve equilibrium, so that the final shell size depends solely upon the difference in impermeable gas partial pressures and shell surface tension.

Research Organization:
KMS Fusion Inc., Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC08-78DP40030
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC)
Patent Number(s):
4,340,407
Application Number:
06/233341
OSTI ID:
864271
Resource Relation:
Patent File Date: 1981 Feb 11
Country of Publication:
United States
Language:
English