CHEMICAL CORROSION OF ROCKER MATERIALS AND PROPELLANT PERFORMANCE STUDIES
Abstract
Studies on the theoretical equilibria resulting from interaction of candidate refractory nozzle wall materials with various chemical species resulting from combustion of rocket fuels have continued. Tantalum carbide was considered in detail, with composition diagrams and saturation parameters reported for its interaction at 1000 psia with A1F3, BF2, BF3, BOF, BeF2, CO, CO2, HCl, HF, H2, H2O, LiF and N2. Similar computa tions are reported for tungsten interacting with BOF, CO, and CO2, these results representing a revision of data reported in the previous quar terly report under this contract, as necessitated by a recent revision in the thermodynamic data for the tungsten oxides. The oxides are con sidered briefly as a class for application in oxygen-containing atmospheres, with results given for MgO, HfO2 and ThO2 in CO2. The stabil ity of carbides in nitrogen is also considered. The possibility of extending the isothermal saturation results for pure components at 1000 psia to mixtures at other pressures was consid ered in some detail, with results that look promising except where multi-atomic species are important which are not considered in the indi vidual cases (e.g., HCN is important in a N2-H2 mixture in equilibrium with graphite, but is not considered with the individual pure reactants)- ''catalog'' of ablation reactions for studies reported previously is included.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1963
- Accession Number
- AD0406727
Entities
People
- D. L. Peters
- R. C. Oliver
- R. W. Baier
- R. W. Sprague