Accession Number : ADA140265

Title :   Reduced Grain Boundary Mobility and the Sintering of Molybdenum.

Descriptive Note : Final rept. 1 Sep 81-29 Feb 84,


Personal Author(s) : German,R M

PDF Url : ADA140265

Report Date : Apr 1984

Pagination or Media Count : 12

Abstract : The sintering of a refractory metal like molybdenum requires a high temperature which can cause rapid grain growth, pore isolation and poor sintered properties. An analysis has been performed of the sintering behavior to isolate specific actions which will aid sintering and retard grain growth. This analysis has led to a Mo-Ni-Si02 composition which experimentally exhibits high sinterability and a fine grain size. Other experiments and analysis have been performed to better define activated sintering and to help develop a better theory. (Author)

Descriptors :   *Molybdenum, *Molybdenum alloys, *Refractory metals, *Sintering, *Microstructure, Mobility, Grain boundaries, Grain growth, Reduction, Powder metallurgy, Nickel, Silicates, Reaction kinetics, Crystals, Transition temperature, Physical chemistry, Mechanical properties

Subject Categories : Physical Chemistry
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE