The effect of rare earth compound of CeCl3 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 CeCl3 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 CeFe2 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.
参考文献
| [1] | TAO X K;WANG Y H;ZHANG C Y.Influence of CeCl3 on co-permeating structures and properties of S-N-B co-permeating in 40Cr[J].New Technology and New Procedure,1992(03):2-4. |
| [2] | PENG R S;LIU Z Y;LIU J.Studies on vanadizing of rare earth element[J].Health Education Research,1991(01):13-16. |
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