Zirconia Hollow Sphere Brick
The ingredients are finely ground in a ball mill with a particle size of less than 3 μm and more than 80%. Add 6% aqueous solution of polyvinyl alcohol (concentration 10%) to the finely ground powder, mix well and pass through sieve, make the blank at 100MPa pressure, and keep the stable zirconia hollow sphere brick at 1730°C for 4h ...