That's why I am try to explain the poor performance of this sample on DSC testing as that it is due to over heating or over oxidation.

这就是为什么我试图解释的DSC测试此示例中的表现不佳，不如说是由于过热或过氧化。

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The unsuitable carbonitriding process, internal oxidation, over deep depth of carbonitrided layer and crust like C N compound on the surface are the main reasons to cause fracture.

碳氮共渗工艺选择不当，共渗层过深，表面出现壳状碳氮化合物、内氧化等缺陷组织是造成其断裂的主要原因。

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The relation coefficient between regression equation and oxidation curve is over 0.9 and the rules of oxidation - temperature and oxidation - time are parabolas.

由计算得到的氧化回归方程与氧化曲线的相关系数可达到0.9以上，高温氧化烧损量与温度和时间均呈抛物线规律。

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