MMC (Metal Matrix Composite) has been focused in recent years due to its high strength and wear resistance. Among the dispersion materials of MMC, Titanium Boride (TiB 2 ) exhibits attractive properties in terms of high stiŠness, high hardness and high corrosion resistance. Therefore, it can be used as protection coating of the structural components according to fabrication of thick coatings. In this study, fabrication of TiB 2 dispersed Fe Cr composite coatings was carried out by MA (Mechanical Alloying) method and LPPS (Low Pressure Plasma Spray). It was possible to fabricate TiB 2 dispersed Fe Cr powders by MA method. Furthermore, the thermal sprayed coatings sustained the dispersion structure. Micro Vickers hardness of the coatings increased with the TiB 2 concentration in the coatings. However, FeCr 50 wt. TiB 2 exhibited quite low hardness. It was considered that the excess TiB 2 made the microstructure of the coating porous. Therefore, fabrication of high hardness TiB 2 dispersed Fe Cr coatings was possible according to the selection of moderate TiB 2 mixing ratio. . 緒 言