下面是论文摘要的一段英文翻译的一部分，本人翻译后觉得有语句错误，希望高手帮忙改下。

Of the specimens after carburizing and hardness of the composition. XRD analysis showed that the carburizing, the sample surface there is a clear TiC phase; fracture surface analysis can obviously see a layer of sediment. On the surface hardness after carburizing carburizing after tests found samples of the surface hardness increased 5 to 6 times. Successive points of cross section through the hardness test can probably determine the thickness of carburized layer. At a certain temperature and holding time, (eg under 950 ℃ for 3h), diffusion layer can reach about 100um, and substantial.

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