炭素飽和溶鉄中のクローム・マンガンおよびニッケルの拡散

概要

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Diffusion coefficients of chromium, manganese and nickel in molten iron saturated with carbon were measured by a capillary reservoir method in the temperature range of 1350° to 1550℃. The results were summarized by the following ARRHENIUS' equations : D_<Cr>=2.67(±1.48)×10^<-3> exp(-(16000(±2100))/(RT))cm^2/sec, for [%Cr]≤5 D_<Mn>=1.47(±0.31)×10^<-2> exp(-(21000(±1200))/(RT))cm^2/sec, for [%Mn]≤13 D_<Ni>=4.92(±2.35)×10^<-3> exp(-(16200(±1600))/(RT))cm^2/sec, for [%Ni]≤5 The values of diffusion coefficient increased in the order, Cr, Mn, Ni, and both the values of activation energy and frequency factor increased in the order, Cr, Ni, Mn. It was confirmed by the measurements of concentration distribution in the capillary samples that all the boundary conditions for the capillary reservoir method were satisfied and that the diffusion occurred under the condition of carbon saturation.
社団法人日本鉄鋼協会の論文
1970-11-01