The interaction between SiC and Ni or Fe
article
In a previous paper the authors have reported on the morphology and composition of the reaction layer between SiC and Ni or Fe at a temperature of 850°C. In SiC/Ni diffusion couples, the compounds Ni2Si, Ni5Si2 and Ni3Si are formed in regular layers. Carbon precipitates are present in the Ni2Si and Ni5Si2 layers as more or less regular bands parallel to the original interface. By means of marker experiments nickel is found to be the predominantly diffusing component. In SiC/Fe diffusion couples the ordered cubic compound Fe3Si is formed, with carbon precipitates randomly dispersed in the layer except for a thin, carbon-free zone near the Fe/Fe3Si boundary. Fe
turns out to be virtually the only diffusing component. The present paper deals with the kinetics of these reactions in the temperature range between 700 and 925 °C.
turns out to be virtually the only diffusing component. The present paper deals with the kinetics of these reactions in the temperature range between 700 and 925 °C.
TNO Identifier
246449
Source
Defect and Diffusion Forum, 66-69, pp. 1497-1502.
Collation
6 p.
Pages
1497-1502
Files
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