The results shows that the failure parts has high silicon content and uneven hardness , the impact toughness and elongation is far below the specification of the material.
结果发现，失效件的硅含量偏高、硬度值很不均匀，冲击韧度和伸长率远低于材质要求，因而导致脆断。
The wear mass loss is high when the abrasive medium has high hardness, multilayer coating shows better wear properties than single-layer coating in the effect of biggish load.
磨料的硬度较高时，涂层的磨损质量损失较大，与单层涂层相比，多层涂层在较高载荷作用下具有较好的抗磨损性能。
The experimentation shows that hardness and wear show non linear relation. The rate of wear depends on many factors.
试验表明硬度与其磨损率呈非线性关系，磨损率是由多因素决定的。
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