X-ray gauge monitoring of LLNL replica carbon production process
This report contains results of a series of x-ray gauging measurements performed on bars tracked through the LLNL replica carbon production process. We were tasked with monitoring a few salt bars through the entire production process to identify any possible problem areas. The process consists of five major steps: pressing fine sodium chloride crystals into a uniform salt bar, sintering the salt bar, infusing the bar with a phenolic polymer solution and convection oven drying it to remove the acetone solvent, carbonizing the polymer, and extracting the salt with water and freeze-drying the final carbon foam bar. After pressing the salt bars, six typical bars were selected for characterization: LS1875, LS1876, LS1879, LS1881, LS1883, and LS1886. These six bars were to gauged after each of the five production steps to check for any inhomogeneity introductions. Two of the bars, however, were damaged during the final production step, resulting in complete process information for only four of the six bars. This report contains only the information gathered for these four bars. The data obtained for the other two bars, prior to damage, showed no significant difference from the data presented here.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6078414
- Report Number(s):
- UCRL-ID-105780; ON: DE91007116
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
RODS
MONITORING
THICKNESS GAGES
CARBON
DENSITY
FOAMS
MANUFACTURING
POLYMERS
PROCESSING
SALTS
SINTERING
X RADIATION
COLLOIDS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
FABRICATION
IONIZING RADIATIONS
MEASURING INSTRUMENTS
NONMETALS
PHYSICAL PROPERTIES
RADIATIONS
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments