Sintering behavior of zirconia spray granulation ZrO 2(Y 2O 3) was investigated. Agglomeration formed during sintering in the green compact was controlled by the heating rate from room temperature to 500℃. When the heating rate is above 3.5℃/min, the quantity of heat given out by sintering the polymer in zirconia spray granulation made the particles strongly interconnected, and induced to the formation of agglomeration. Agglomeration has shown to affect to different extents the sintering behavior over th...