화학공학소재연구정보센터
Powder Technology, Vol.94, No.3, 259-263, 1997
Intermetallic Fe-Al Layers Obtained by the Powder Cloth Method
Three-layer composites, i.e. substrate, diffusion and sinter layers, were obtained by the powder cloth method. The sinter layer consisted of self-disintegrated powders of Fe-Al-Me intermetallic phases with the addition of pure iron. Plain carbon steel was chosen as a substrate. High temperature pressing was applied. The quality of joints can be defined by the properties of the sinter and diffusion layers. The diffusion layer measurements were verified by the solid state and reactive diffusion laws. The best correspondence of the measured and calculated thicknesses of the diffusion layers was found for diffusion coefficients a little different than those given in the literature, i.e. D-1’ = 1.8 x 10(-9) cm(2)/s at 1373 K and D-2’ = 1.5 x 10(-11) cm(2)/s at 1173 K.