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