Chromium and Nickel Powders Made by Reduction of Their Oxides with Magnesium, Lithium, or Sodium Vapors
Abstract
Chromium powder separable into 0.0068 micrometers colloidal and 0.16 micrometers coarse powder fractions was obtained by reduction of Cr2O3 with Mg vapor in a vacuum furnace. The coarse powder fraction was calculated to have 8 volume percent residual MgO plus MgO Cr2O3 dispersolds, probably suitable for dispersion strengthening. Other chromium powders, 0.08- to 0.60 micrometers particle size and oxygen to surface area ratios of about 0.002 g/sq m, were made by reduction of Cr203 with Li and Na vapors. Nickel powder, 1.25 micrometers particle size and with 0.114 percent oxygen, was made by reduction of NiO with Li vapor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1968
- Accession Number
- ADA405661
Entities
People
- Alan Arias
Organizations
- National Aeronautics and Space Administration