Abstarct: Abstract Superalloys have good corrosion resistance at high temperatures, but at higher temperatures, their mechanical properties decrease and they are not economical due to their high cost. Therefore, ceramic materials were the best candidate as a substitute for super alloys and introduced as a coating. Thermal barrier coatings are used as thermal insulation to prevent the temperature of the substrate from rising, and they are used to create a temperature difference between the environment and the surface of the substrate, and they have good adhesion to the substrate And they have the lowest stress created between the protective oxide and the substrate, increasing the fatigue life of the parts. MCrAlY and MAX phases have such properties. In this research, Cr2AlSiC max phase was milled under argon gas atmosphere for 24 hours and synthesized using mechanical alloying method and high temperature diffusion mode. Then, they were synthesized and composited with MCrAlY coating, both of which have high corrosion resistance, with a ratio of 5, 10 and 15% by spark plasma sintering method. Then the samples were subjected to hot corrosion test in Na2SO4 + V2O5 20% environment, at a temperature of 860 degrees Celsius, for 30, 70, 150 and 200 hours, and the weight changes of all samples were measured before and after the corrosion test. Then it was characterized and phased by X-ray test technique. Then, the morphology of the formed oxide laxyer was examined with FESEM electron microscope. Next, the microstructure of the cross-section, before and after the hot corrosion test, was investigated at different times. The results of the microstructure investigation after the hot corrosion test showed that the Max phase is completely uniformly distributed on the surface with MCrAlY. Max phase XRD results showed that Cr2AlSiC was accompanied by impurities such as Cr2C, Cr7C3, Al8Cr5 and AlCr2. The results of hot corrosion in the TGA test showed that with the increase in the percentage of Cr2AlSiC, due to the fact that the phases supplying aluminum increased, the samples had less weight changes; Also, by examining the microstructure of the samples, it was observed that with the increase in the percentage of Cr2AlSiC, the oxide laxyer formed on the composite samples is more continuous and denser, and they showed better resistance to hot corrosion.