Atomistic Scale Study on Effect of Crystalline Misalignment on Densification during Sintering Nano Scale Tungsten Powder

Moitra, A., Kim, S., Kim, S., Park, S. J., German, R., & Horstemeyer, M. (2008). Atomistic Scale Study on Effect of Crystalline Misalignment on Densification during Sintering Nano Scale Tungsten Powder. International Conference on Sintering - Sintering 2008. La Jolla, CA.

Abstract

An atomistic simulation is used in this research to probe the sintering process of crystalline tungsten and tungsten alloys at the sub-microscopic level. We have performed an atomistic simulation with nanoscale tungsten particles. Of primary interest is the application and development of classical and quantum mechanical methodologies to gain insight into the fundamental characteristics of atomic movement during sintering and how various additives influence the sintering processing. Since both neck growth and shrinkage result, it is possible to extend these calculations to the physical properties of the material. Also, this paper focuses on densification and grain growth during sintering as a function of the crystalline misalignment between particles. These findings can provide a foundation for a new virtual approach to nanoscale processing and material design.