Alcohol-water carbon black and cerium oxide biphase nano composite slurry for preparing metal base micro-nano powder and preparation method

The invention discloses alcohol-water carbon black and cerium oxide biphase nano composite slurry for preparing metal base micro-nano powder and a preparation method. The alcohol-water carbon black and cerium oxide biphase nano composite slurry is characterized in that the composite slurry consists of nano carbon black powder, nano cerium oxide powder and an alcohol-water mixed solution, wherein the mass fraction of the nano carbon black powder in the slurry is 0.05-0.15%; the mass fraction of the nano cerium oxide powder is 3-5 times that of the added nano carbon black powder; the rest is the alcohol-water mixed solution; the alcohol-water mixed solution consists of alcohol and water; and the volume percent of the alcohol in the mixed solution is 30-70%. The alcohol-water carbon black and cerium oxide biphase nano composite slurry is prepared for the first time, and the problem that the quality of carbon black and cerium oxide biphase nano reinforced metal base micro-nano powder prepared by the existing single-phase nano slurry is dissatisfactory is solved. The slurry has pure ingredients and good dispersion stability, can be dispersed stably for over 3 months without settlement, and has high usability and engineering application values.