The powder metallurgy method of the diamond bit matrix can make the matrix raw material get a structure similar to the ordinary alloy, and realize the alloying. There are many kinds of phases in the alloy structure, among which among the components with similar electrochemical properties and atomic radii, the alloy is biased towards the excellent natural solid solution phase.
It can complete the powder metallurgy process that meets the above-mentioned performance requirements at a lower sintering temperature (typically not exceeding 950°C) and a short holding time (typically not exceeding 5 minutes) to slow down the deterioration of diamond single crystals trend.
Because the solid solution phase is deformed in the crystal lattice during the natural process, the resistance to the dislocation of the crystal lattice is increased, so that the strength and hardness of the raw material are improved, that is, the solid solution strengthened infiltration is generated, so the solid solution phase becomes The most basic composition of the higher raw material requirements for comprehensive machine functions. It can be said that the formation of the solid solution phase of the carcass alloy is one of the keys to achieving the high performance of the carcass raw material.
