Thermal Properties of Grade CGB Graphite

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Description

Grade CGB graphite is a nuclear graphite which is basically an extruded petroleum coke bonded with coal tar pitch. No carbon blacks are used and the low-permeation graphite is finished through a series of impregnations and heat treatments with a final heat treatment of all components to 2800 degrees C. A listing of the results obtained is given in Table 1. The results at 51 degrees C are considered questionable. There was a slight contamination of the 90% Pt 10% Rh-Pt thermocouples at 910 degrees C but it was not sufficient to doubt the validity of the 910 degrees C … continued below

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9 pages : illustrations

Creation Information

Moore, J. P. & Godfrey, T. G. August 11, 1964.

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Description

Grade CGB graphite is a nuclear graphite which is basically an extruded petroleum coke bonded with coal tar pitch. No carbon blacks are used and the low-permeation graphite is finished through a series of impregnations and heat treatments with a final heat treatment of all components to 2800 degrees C. A listing of the results obtained is given in Table 1. The results at 51 degrees C are considered questionable. There was a slight contamination of the 90% Pt 10% Rh-Pt thermocouples at 910 degrees C but it was not sufficient to doubt the validity of the 910 degrees C results. However, the results obtained at 1015 degrees C should be disregarded because of severe thermocouple instabilities. In addition, the electrical resistance of the core heater at 603 degrees C indicated the thermocouples had a -10 to -15 degree error which is sufficient justification to disregard the 605 degrees C data.

Physical Description

9 pages : illustrations

Notes

Digitized from microopaque cards (1).

This note is an addendum to ORNL-3556 and was prepared to allow presentation of the most recent flow apparatus measurements at the National Physical Laboratory Thermal Conductivity Conference, Teddington, England, July 15-17, 1964.

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  • SuDoc Number: Y 3.At 7:22/ORNL-P-150
  • Report No.: ORNL-P-150
  • Accession or Local Control No: metadc1257322
  • Archival Resource Key: ark:/67531/metadc1257322

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TRAIL Microcard Collection

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Creation Date

  • August 11, 1964

Added to The UNT Digital Library

  • June 18, 2021, 7:17 a.m.

Description Last Updated

  • April 4, 2023, 12:19 p.m.

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Moore, J. P. & Godfrey, T. G. Thermal Properties of Grade CGB Graphite, report, August 11, 1964; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1257322/: accessed November 1, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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