Development of Polycrystalline Spinel for Transparent Armor Applications
Abstract
The study was undertaken to determine the feasibility of producing substantial quantities of pure, undoped MgAl2O4 spinel powder from a chemical precursor in a semicontinuous process, and thereafter, of densifying the powder by hot molding and/or rate controlled sintering processes on a best efforts basis to achieve optical transparency in this isotropic material. The precursor salt was a mixed magnesium aluminum sulphate hydrate produced on a batch basis by direct melting of the starting salts and subsequent solidification by cocrystallization. Partially dehydrated precursor was dynamically precalcined at about 650 deg C, and then dynamically calcined at about 1150 deg C in an inclined rotating tube furnace.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1972
- Accession Number
- AD0742492
Entities
People
- Hayne Palmour Iii
Organizations
- North Carolina State University