The invention relates to
yttrium aluminum garnet and
yttrium oxide double-
crystal transparent
ceramic as well as the preparation method thereof. The transparent
ceramic is characterized in that the YAG and Y2O3 double-
crystal transparent
ceramic is prepared under the conditions that the weight percentage of
yttrium aluminum garnet and yttrium
oxide range from 60 percent to 99.99 percent, and the weight percentage of Y2O3 ranges from 40 percent to 39.9 percent. The preparation of the double-
crystal transparent ceramic is mainly divided into two stages: firstly, YAG and Y2O3 are mixed with a milling medium, a
grinding ball and
sintering additives (0.01 to 5.0 wt percent of the
sintering additives is further added), the
slurry is dried to obtain composite
powder, and the composite power is screened; and secondly, the composite
powder is subjected to static pressure molding through
dry pressing and temperature reduction, and is sintered under no pressure, the
sintering temperature is 1,650 DEG C to 1,850 DEG C, and the
holding time is 1 hour to 50 hours. The maximum transmission efficiency of the 2mm double-crystal transparent ceramic within the
wave band of 400 nm to 1,100 nm can reach more than 81 percent. The preparation method has the advantages of wide
raw material sources, simple process and convenient control. The double-crystal transparent ceramic is applicable to the
laser and
luminescence field by serving as matrix materials.