THE STABILITY OF SELECTED OXIDES, NITRIDES AND BORIDES IN MOLYBDENUM TO 4000 F,
Abstract
Presented is an evaluation of the compatibility between molybdenum and several refractory compounds as dispersed phases in the 3000 to 4000 F temperature range. Compounds included in the study are BN, ZrN, HfN, LaB6, ZrO2 and ThO2. Hot-pressed alloys, consisting of nominally 2.5 vol % of the refractory phase in a molybdenum matrix, were vacuum annealed to evaluate temperature stability. Evaluation was based on changes in grain size, dispersed phase morphology, hardness and gross macroscopic deterioration. The materials HfN, ZrO2 and ThO2 showed potential for dispersion strengthening and were recommended for further development. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 20, 1964
- Accession Number
- AD0441239
Entities
People
- J. E. White
Organizations
- The Aerospace Corporation