Spark Plasma Sintering (SPS) is a kind of new sintering technology based on electrical discharge machining. It belongs to plasma sintering technology, which uses sparks and gap discharge to sinter in pressure. While the other is in a vacuum environment, uses 5000-20000k plasma flame to heat sintering, this called thermal plasma sintering.

Tungsten copper rapid directional solidification preparation of tungsten copper alloy, so that between the solidifying metal and non-metal solidified to produce a specific temperature gradient, usually resulting in a higher degree of supercooling, so that solidification in a wide range of solubility, the solid obtained phase high content of alloying elements and grain refinement significantly fewer microscopic segregation. Commonly used methods of rapid solidification atomization, melt spinning method and spray deposition.

There are four main types of tungsten oxide, yellow, blue, violet and brown tungsten oxide.

The tungsten copper liquid phase sintering method is prepared by tungsten powder and copper powder in a certain ratio, adding a lubricant, forming, and then sintering and densifying the material at a temperature between the melting point of tungsten and copper.