Examination of carbon diffusion in niobium clad steel composite

Abstract

The Nb₂ C layer formed in the bonding interface of a niobium clad steel composite at 1023 K for 112 h was examined metallographically and analyzed using the electron microprobe technique. The mechanism of Nb₂ C phase diffusion layer formation was discussed using Fick’s law assuming that stationary diffusion of carbon was established in niobium/steel diffusion couples.

Keywords

Nb₂ C-phase / carbon activity / stationary diffusion

References

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