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DURA-47復合鋯珠由一級的氧化鋁粉和釔穩定的氧化鋯粉復合而成，相對硅酸鋯珠，其具有更高的密度和硬度，使在大小容積砂磨機中處理高中粘度物料的又一理想的選擇。

        DURA-47 Zirconia Toughened Alumina (ZTA) bead is shaped from the high grade alumina powder and yttria stabilized zirconia powder. It has a higher density and hardness than zirconium silicate beads. It is another good option to grind material from middle to high viscosity in small or big volume bead mills.