为表征金刚石薄膜涂层硬质合金的耐磨性能，引入了“耐磨系数”指标。

Coefficient of wear ability "is introduced to show the wear ability of cemented carbide coated with diamond film."

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这表面有极高的硬度（60局。），耐磨性和耐腐蚀性，低摩擦系数。

This surface has extreme hardness (60 RC. ), excellent wear and corrosion resistance, and low coefficient of friction.

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随着石墨颗粒含量从5%增加到20%，镁合金基复合材料的耐磨性得到明显的改善，磨损质量损失与摩擦系数都降低到较低水平。

With graphite particle content increasing from 5% to 20%, wear weight-loss and friction coefficient of the composites are obviously declined, greatly improving wear resistance of the composites.

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