PREPARATION OF FOILS
The details of apparatus and techniques used for the preparation of foils from a wide variety of materials are presented. The average foll thickness is determined by weighing, counting, fission weighing, or by calorimetric analysis. Uniformity is determined by counting or weighiog small areas or by exposure to a nuclear emulsion. Impurities are determined by chemical analyses. The principal methods of preparation are electrodeposition, painting from solution, vacuum deposition, electrostatic spraying, and electrophoresis. Electrodeposition is used for the preparation of films of a few mu g/cm/sup 2/; uniformity and deposition efficiency are good The painting method is used where uniformity is not important; however, a uniformity of 10% may be be attained. The vacuum evaporation method may be adapted to many metals and compounds and covers the thickness range from a few mu g/cm/sup 2/ to several mg/cm/sup 2/, producing the most uniform deposits. Electrostatic spraying is of limited use. Electrophoresis is used inside cylinders and on irregular surfaces where tight adherence is not essential. (J.R.D.)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- Sponsoring Organization:
- US Atomic Energy Commission (AEC)
- NSA Number:
- NSA-12-014607
- OSTI ID:
- 4308336
- Report Number(s):
- A/CONF.15/P/664
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
CALORIMETERS
CHEMISTRY
COATING
COMPOUNDS
CONFIGURATION
COUNTERS
CYLINDERS
DISTRIBUTION
EFFICIENCY
ELECTRODEPOSITION
ELECTROPHORESIS
ELECTROSTATICS
EVAPORATION
FILMS
FISSION
FOILS
IMPURITIES
MEASURED VALUES
METALS
NUCLEAR EMULSIONS
PREPARATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SOLUTIONS
SURFACES
THICKNESS
VACUUM
WEIGHT