Accession Number : AD0438050


Title :   CARBONIZATION OF PLASTICS AND REFRACTORY MATERIAL RESEARCH. VOLUME 2. REFRACTORY MATERIALS


Descriptive Note : Rept. for 1 Jul 1961-30 Jun 1962


Corporate Author : GENERAL ELECTRIC CO CINCINNATI OH


Personal Author(s) : Kibler, G M ; Lyon, T F ; Linevsky, M J ; DeSantis, V J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/438050.pdf


Report Date : Mar 1964


Pagination or Media Count : 183


Abstract : Vapor pressure studies were conducted through the application of Langmuir evaporation, Knudsen effusion, matrix isolation and resonance line absorption techniques. The vaporization of hafnium and zirconium nitrides was studied by the Knudsen effusion method; the Langmuir evaporation method was applied to pure hafnium metal. Matrix isolation of vapor over thoria proved successful and structural assignments were made to various bands in the infrared absorption spectra of the matrix isolated species. Resonance line absorption photometry studies of TiB2 were completed. Normal spectral emissivity data from 0.4 to 5.0 microns and from 1500 to 2500 K, supported by systematic methods of material characterization, were obtained for the compounds niobium diboride, zirconium diboride, titanium diboride, tantalum nitride, hafnium nitride, and zirconium nitride.


Descriptors :   *THERMAL PROPERTIES , *PLASTIC PROPERTIES , *REFRACTORY MATERIALS , DENSITY , ZIRCONIUM COMPOUNDS , HAFNIUM COMPOUNDS , HAFNIUM , THERMODYNAMICS , X RAY DIFFRACTION , NITRIDES , OXIDES , WEIGHT , ABSORPTION SPECTRA , VAPOR PRESSURE , CHEMICAL ANALYSIS , VAPORIZATION , EMISSIVITY , TITANIUM COMPOUNDS , BORIDES , NIOBIUM COMPOUNDS , TANTALUM COMPOUNDS , THORIUM COMPOUNDS


Subject Categories : Ceramics, Refractories and Glass
      Plastics


Distribution Statement : APPROVED FOR PUBLIC RELEASE