Accession Number : ADA324755

Title :   Nanostructured Bearing Alloy Studies.

Descriptive Note : Quarterly rept. 1 Apr-30 Jun 96,

Corporate Author : CONNECTICUT UNIV STORRS INST OF MATERIALS SCIENCE

Personal Author(s) : Gonsalves, K. E.

PDF Url : ADA324755

Report Date : 10 AUG 1996

Pagination or Media Count : 5

Abstract : This period marks the transition in the powder making from the Co-Reduction method to the Thermal Decomposition. The latter method was studied earlier in this program and was dropped in favor the Co-Reduction method because of the better chemical homogeneity in powder produced by the Co-Reduction method. The main drawbacks for the Co-Reduction methods for making M50 powder are the high cost of the chemical precursors and the lengthy vacuum sublimation needed to remove the deleterious chloride by-products in the powder. Thermal Decompositon method which does not have these problems was therefore revisited recently with the goal of improving its homogeneity. It was found that the homogeneity of the Thermally Decomposed powder can be enhanced significantly by high-energy ball mixing method.

Descriptors :   *ALLOYS, *BEARINGS, THERMAL PROPERTIES, HIGH COSTS, CHEMICALS, POWDERS, PRECURSORS, VACUUM, HIGH ENERGY, SUBLIMATION, CHLORIDES, DECOMPOSITION, PYROLYSIS, HOMOGENEITY.

Subject Categories : Properties of Metals and Alloys
      Inorganic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE