Accession Number : AD0670626

Title :   SPECTROSCOPIC STUDIES OF THE VAPORIZATION OF HIGH TEMPERATURE MATERIALS.

Descriptive Note : Final scientific rept. Jan 65-Dec 66,

Corporate Author : GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV

Personal Author(s) : Linevsky,Milton J.

Report Date : APR 1968

Pagination or Media Count : 45

Abstract : The techniques of matrix isolation were used to obtain the infrared spectra of several high temperature molecules. An injector Knudsen cell was added to the general methods of matrix isolation resulting in further versatility of the method. Spectra of species produced by the reaction of a condensed phase and gas phase can now be studied. The following molecules were studied: HBO2, BOCl, BOF, FeF2, CrF2, CrF3, CrCl2 and LiOH. In most cases tentative frequency assignments were made and structural properties inferred. Atomic resonance line absorption studies were carried out on AlN. The heat of formation at 298K was found to be -71 8 plus or minus 2 kcal/mole based on the observed vapor pressures. (Author)

Descriptors :   (*REFRACTORY MATERIALS, *INFRARED SPECTROSCOPY), ABLATION, VAPORIZATION, SOLIDIFIED GASES, SOLID SOLUTIONS, ATOMIC SPECTROSCOPY, RESONANCE ABSORPTION, BORIC ACID, BORON COMPOUNDS, OXYCHLORIDES, OXYFLUORIDES, IRON COMPOUNDS, CHROMIUM COMPOUNDS, FLUORIDES, CHLORIDES, LITHIUM COMPOUNDS, HYDROXIDES, MOLECULAR STRUCTURE, VAPOR PRESSURE, HEAT OF FORMATION

Subject Categories : Ceramics, Refractories and Glass
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE