Study on Co-Permeation of Solid Rare Earth, Boron and Vanadium

摘要

The effect of rare earth compound of CeCl 3 on the kinetic process, composition, microstructure and mechanical properties of co permeating of solid powder boron vanadium (B V) was investigated. The results indicate that the addition of CeCl 3 to permeating agent not only has obviously catalytic effect on permeating rate, which increases by more than 40%, but also greatly improves the hardness and abrasion resistant of the permeating layer owing to the formation of new phase of CeFe 2 after Ce permeates into the layer of the part as an alloying ingredient. It is believed that rare earth elements accelerate the permeating rate of B and V by increasing the potentials of B and V of the agent, activating the surface of the workpiece, and decreasing the activation energy of diffusion of the B and V atoms.