RESEARCH IN PHYSICAL AND CHEMICAL PRINCIPLES AFFECTING HIGH TEMPERATURE MATERIALS FOR ROCKET NOZZLES

Abstract

Heats of vaporization and formation of TiB2 and the Al from AlN were measured by mass spectroscopy. An evaporation coefficient of 0.8 to 1.0 was obtained for (110) and (111) planes of Si. Absorption spectra revealed a strong doublet, apparently caused by a C3 molecule, in the matrices of C vapor in Ar. Vibration frequency studies of B2O3 are reported. Up to 2200 C there was essentially no reaction of molecular N with graphite. Above 1350 C atomic N reacts with graphite to form cyanogen. The reaction of H with graphite was studied under static and kinetic conditions. Thermal conductivities of graphite foams were measured. Mechanical properties of MgO single crystals and polycrystalline W were investigated. Powders of refractory compounds were significantly purified by vacuum heating up to 2000 C.

Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1961
Accession Number
AD0259849

Entities

People

  • Robert Lowrie

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Frequency
  • Gas Turbine Nozzles
  • Graphitic Materials
  • Heat Energy
  • High Temperature
  • Mass Spectroscopy
  • Materials
  • Mechanical Properties
  • Rocket Nozzles
  • Single Crystals
  • Spectra
  • Spectroscopy
  • Thermal Conductivity
  • Transition Temperature

Readers

  • Combustion science or combustion engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Thin Film Deposition Science.

Technology Areas

  • Fully Networked C3