Accession Number:

AD0731716

Title:

Continuation of a Reactive Alumina Powder.

Descriptive Note:

Technical rept.,

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OHIO COLUMBUS LABS

Personal Author(s):

Report Date:

1971-10-01

Pagination or Media Count:

28.0

Abstract:

Dry ball milling and milling in several liquid media were investigated as means of reducing reactive alumina powders containing porous aggregates to their ultimate particle size. Milling in liquid media eliminated the porous aggregates, but denser aggregates formed. The powders were successfully reduced to their ultimate particle size by dry milling. The effects of various milling treatments on the surface area, compaction behavior, sinterability, and microstructural uniformity of sintered compacts were determined. These effects were correlated with changes in the structure of the agglomerates and aggregates in the powders as determined by electron microscopy. Results showed that dry milling improved the compaction behavior, sinterability, and microstructural uniformity of sintered compacts. Author

Subject Categories:

  • Ceramics, Refractories and Glass
  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE