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Title: X-ray gauge monitoring of LLNL replica carbon production process

Abstract

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.

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
Sponsoring Org.:
DOE/DP
OSTI Identifier:
6078414
Report Number(s):
UCRL-ID-105780
ON: DE91007116
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 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

Citation Formats

Lewis, D L. X-ray gauge monitoring of LLNL replica carbon production process. United States: N. p., 1990. Web. doi:10.2172/6078414.
Lewis, D L. X-ray gauge monitoring of LLNL replica carbon production process. United States. https://doi.org/10.2172/6078414
Lewis, D L. Sat . "X-ray gauge monitoring of LLNL replica carbon production process". United States. https://doi.org/10.2172/6078414. https://www.osti.gov/servlets/purl/6078414.
@article{osti_6078414,
title = {X-ray gauge monitoring of LLNL replica carbon production process},
author = {Lewis, D L},
abstractNote = {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.},
doi = {10.2172/6078414},
url = {https://www.osti.gov/biblio/6078414}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {12}
}