The invention relates to the technical field of continuous
fiber reinforced
ceramic matrix composite materials, and particularly discloses a three-dimensional aluminum
oxide fiber woven part reinforced aluminum
oxide composite material based on an aqueous
slurry impregnation process, and the
porosity of the
composite material is 20-30%. A reinforced phase of the
composite material is a continuous aluminum
oxide fiber woven part, the woven part is in a fiber cloth sewing, two-dimensional and half or three-dimensional weaving mode, the
mass content of
alumina in
alumina fibers is not lower than 70%, and the
volume fraction of the fibers in the composite material is 40-45%. The aluminum
oxide matrix of the composite material is prepared through the processes of multiple times of dipping,
drying and
sintering of water-based aluminum oxide
powder slurry with high
solid content and low
viscosity, the
solid content of the water-based aluminum oxide
powder slurry is 30-40 vol%, the
viscosity of the slurry is 5-30 mPas, the pH is 3-4.5, and the
Zeta potential is 60-70 mV. The invention also provides a preparation method of the composite material. The reinforced fibers are arranged between the
layers of the composite material, so that the integrity is good. The preparation method disclosed by the invention is simple in process, low in cost, good in
environmental protection property and easy to realize large-scale industrialization.