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Title: Microcellular carbon foam and method

A microcellular carbon foam characterized by a density in the range of about 30 to 1000 mg/cm.sup.3, substantially uniform distribution of cell sizes of diameters less than 100 .mu.m with a majority of the cells being of a diameter of less than about 10 .mu.m, well interconnected strut morphology providing open porosity, and an expanded d(002) X-ray turbostatic spacing greater than 3.50 angstroms. The precursor for the carbon foam is prepared by the phase inversion of polyacrylonitrile in a solution consisting essentially of at least one alkali metal halide and a phase inversion solvent for the polyacrylonitrile.
Inventors:
 [1];  [2]
  1. (Farragut, TN)
  2. (Harriman, TN)
Issue Date:
OSTI Identifier:
869220
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5300272
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
microcellular; carbon; foam; method; characterized; density; range; 30; 1000; mg; cm; substantially; uniform; distribution; cell; sizes; diameters; 100; majority; cells; diameter; 10; interconnected; strut; morphology; providing; porosity; expanded; 002; x-ray; turbostatic; spacing; 50; angstroms; precursor; prepared; phase; inversion; polyacrylonitrile; solution; consisting; essentially; alkali; metal; halide; solvent; cell sizes; microcellular carbon; carbon foam; consisting essentially; alkali metal; metal halide; substantially uniform; cell size; solution consisting; uniform distribution; phase inversion; turbostatic spacing; x-ray turbostatic; inversion solvent; morphology providing; strut morphology; interconnected strut; foam characterized; /423/264/521/