Method of forming cavitated objects of controlled dimension
Abstract
A method is disclosed 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.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 5740183
- Application Number:
- ON: DE82004451
- Assignee:
- Dept. of Energy TIC; NTS-82-003987; ERA-07-030402; EDB-82-072505
- DOE Contract Number:
- AC08-78DP40030
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 36 MATERIALS SCIENCE; MICROSPHERES; FABRICATION; POLYMERS; GLASS; SHELLS; 420200* - Engineering- Facilities, Equipment, & Techniques; 360401 - Polymers & Plastics- Preparation & Fabrication- (-1987); 360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication
Citation Formats
Anderson, P.R., and Miller, W.J. Method of forming cavitated objects of controlled dimension. United States: N. p., 1981.
Web.
Anderson, P.R., & Miller, W.J. Method of forming cavitated objects of controlled dimension. United States.
Anderson, P.R., and Miller, W.J. Wed .
"Method of forming cavitated objects of controlled dimension". United States.
@article{osti_5740183,
title = {Method of forming cavitated objects of controlled dimension},
author = {Anderson, P.R. and Miller, W.J.},
abstractNote = {A method is disclosed 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {2}
}