The Planar Dynamic Compaction of Tungsten Powder

In this paper we study the planar dynamic compaction of tungsten powder with the granular size of 3 m and 20 m. It is shown experimentally that the tungsten powder with smaller granular size cannot be well compacted. Its compacted sample has severe layer division. In order to obtain well-compacted sample, the tungsten powder must have the granular size more than 20 m, the velocity of compaction must be greater than 1 100 m/s, and the tungsten powder must be mixed with cohesive phase composed by the cobalt, nickel and iron powder. All these can be well explained by the numerical calculation which is performed by use of the spherical shell model proposed by Carroll and Holt in 1972.