STRENGTH CHARACTERIZATION OF POWDER AGGREGATES.
Abstract
In materials made by powder processing, the strength of the aggregates in the powder is important with regard to processing parameters, microstructural development and properties. A technique for determining this important powder characteristic is proposed. The technique is based on interpretation of pressure-density data. Pressure-density data were obtained for two commercial reactive alumina powders, for aluminum, copper, and graphite powders, and for a series of alumina powders prepared by calcining a dry-milled reactive alumina powder at selected temperatures. The data yielded several linear regions when plotted as logarithm of pressure versus relative density. The mechanism believed to control compaction in each linear region is identified, and a technique for determining the strength of aggregates in powders from pressure-density data is proposed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1970
- Accession Number
- AD0712817
Entities
People
- D. E. Niesz
- M. J. Snyder
- R. B. Bennett
Organizations
- Battelle Memorial Institute