Effects of Al contents on a microstructure of TiB₂-(Fe-Al) cermets prepared from a powder mixture of TiB₂, Fe and Al were investigated. The contents of binder phases were Fe₃Al, Fe₃Al₂ and FeAl used. The Al addition improved a relative density of the cermets compared with the non Al added TiB₂-Fe cermets. This is because the molten Al infiltrated into the gaps between TiB₂ particles during the sintering due to the good wettability of Al and TiB₂, followed by the formation of (Fe-Al) phase occurred by a reaction between molten Al and solid Fe. The relative densities of the samples with Fe₃Al₂ and FeAl binder phase were lower than that of the sample with Fe₃Al binder phase. An increase in Al content increases an order-disorder transition temperature of the (Fe-Al) phase; thus the sintering in the sample with Fe₃Al₂ and FeAl binder phase was carried out in the ordered state of the binder. The ordered phase usually shows a low deformability. Therefore, the sintering of the sample with Fe₃Al₂ or FeAl phases shows the lower relative densities than the sample with Fe₃Al phase.