Method of forming cavitated objects of controlled dimension
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
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Related Subjects
forming
cavitated
controlled
dimension
controllably
varying
dimensions
hollow
spherical
shells
precursor
shell
heated
temperature
softening
ambient
atmosphere
ratio
gases
permeable
wall
impermeable
substantially
corresponding
contained
expands
partial
pressures
internally
externally
approach
achieve
equilibrium
final
size
depends
solely
difference
gas
surface
tension
spherical shell
spherical shells
softening temperature
ambient atmosphere
partial pressure
hollow spherical
surface tension
partial pressures
shell wall
shell surface
controllably varying
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