优点：有较好的韧性， 宝石头部摩擦系数低，具有超长的使用寿命。

Advantages: good toughness, low friction coefficient of the ruby head, long life.

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例如，纳米结构陶瓷比粗晶粒陶瓷有较好的韧性和较高的强度。纳米相金属在屈服强度和弹性模量方面有显著的增加。

For example, nanostructured ceramics are tougher and stronger than the coarser grained ceramics. Nanophase metals exhibit significant increases in yield strength and elastic modulus.

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有较好的附着力、打磨性和柔韧性。

Have good adhesion, flexibility and polishes.

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