Ceramic powder of nano grade is an aggregate composed of extremely fine crystalline grain and numerous of atoms lying in the defective center of crystalline region.

• 纳米级陶瓷粉是由极细的晶粒和大量处于晶界内部缺陷中心的原子所构成的集合体。材料粒径变小,将引起纳米材料性质的变化。