Then hardness of coatings and substrate was measured. By means of bend-rotation fatigue tests, fatigue strength of coating and uncoating specimens was compared after hardening and tempering.

然后测量涂层和基体的硬度，并通过采用旋转弯曲疲劳试验比较涂层试样与未涂层试样的疲劳强度。

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Then hardness of coatings and substrate was measured. By means of bend-rotation fatigue tests, fatigue strength of coating and uncoating specimens was compared after hardening and tempering.

然后测量涂层和基体的硬度，并通过采用旋转弯曲疲劳试验比较涂层试样与未涂层试样的疲劳强度。

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