DEVELOPMENT OF ULTRA REFRACTORY MATERIALS. Progress Report No. 16 for November 1, 1958 through January 31, 1959
A status summary of equipment used on the project is given and a description of all available testing equipment is appended. Progress in materials testing includes preparation of new refractory systems. oxidation testing of refractories based on Lr, Ti, Nb, Sr, and Ba. Thermal shock testing of samples by determining the rate of heating in an oxidation furnace is reported. Refractory systems investigated include ZrO/sub 2/-SiO/sub 2/-ZrB/sub 2/, ZrSiO/ sub 4/-ZrB/sub 2/, ZrO/sub 2/-ZrB/sub 2/, , and NB/sub 2/-NbSi/sub 2/. The pure compounds, niobium diboride and niobium disilicide were prepared by direct reaction of the elements. Properties of these compcunds are tabulated. Various zirconates such as that of strontium, calcium, and barium were examined for use as oxidation resistant high-temperature materials. Data on x-ray and spectrographic analyses of these materials are tabulated along with data on oxidation stability. (For preceding period see AD-200603.) (J.R.D.)
- Research Organization:
- Carborundum Co. Research and Development Div., Niagara Falls, N.Y.
- NSA Number:
- NSA-14-004546
- OSTI ID:
- 4205131
- Report Number(s):
- AD-210960
- Country of Publication:
- United States
- Language:
- English
Similar Records
DEVELOPMENT OF ULTRA REFRACTORY MATERIALS. Summary Report for November 1, 1958 through October 31, 1959
Electrolytic preparation of titanium and zirconium diborides from their oxides and mineral concentrates. Report of investigations
Related Subjects
CHEMICAL REACTIONS-- FURNACES-- HEATING-- INTERMETALLIC COMPOUNDS-- LABORATORY EQUIPMENT-- MATERIALS TESTING-- NIOBIUM BORIDES-- NIOBIUM COMPOUNDS-- OXIDATION-- PHASE DIAGRAMS-- PREPARATION-- QUANTITATIVE ANALYSIS-- REFRACTORIES-- SILICIDES-- SILICON OXIDES-- STRONTIUM COMPOUNDS-- TABLES-- THERMAL STRESSES-- TITANIUM CARBIDES-- ZIRCONIUM BORIDES-- ZIRCONIUM COMPOUNDS-- ZIRCONIUM OXIDES
METALS, CERAMICS, AND MATERIALS