The invention relates to a preparation method of an anti-purple-halo transparent
ceramic panel for replacing sapphires. A transparent
ceramic is a
cubic crystal system and comprises AlON based ceramics, Y2O3 based ceramics,
Spinel based ceramics and YAG based ceramics. The preparation method of the transparent
ceramic comprises the following steps: adding a certain amount of
sintering additives, binding agents, dispersing agents, liquid media,
grinding balls and / or
rare earth oxides into ceramic
powder, performing ball-milling, uniformly mixing, then performing
tape casting molding, or performing slip
casting molding, or performing
gel casting molding, or performing injection molding, or performing dry-pressing molding to obtain a ceramic biscuit,
degreasing a molded biscuit, and then
sintering to obtain the ceramic; and performing annealing,
polishing and anti-reflection
film coating treatment on the obtained ceramic to obtain the transparent ceramic panel of which the
transmittance is about 95%. The transparent ceramic panel disclosed by the invention does not need
cutting processing, is easily-controllable in shape, can be used for simplifying a
processing technique, also is short in ceramic
production cycle, and ensures that the productivity can be improved and the cost can be reduced.