Abstract
Properties of borided SAE 1035 steel have been investigated during boriding treatment, which was carried out in slurry salt bath at temperature range from1073 to 1273K for 2, 4 and 8 h. The presence of both FeB and Fe2B phases formed on the surface of steel substrate was confirmed by X-ray diffraction. Scanning electron microscopy (SEM) and optical microscopy examinations showed that boride layers have saw-tooth and columnar morphology. It has been shown that the thickness of boride layers increased when the time and temperature process increased, its value ranged from 20 to 387 μm. The hardness value of the boride layer was about 1760±200 HV0.1, while the hardness of un-borided steel was about 225±20 HV0.1. The kinetic studies showed a parabolic relationship between layer thickness and process time. Depending on temperature and layer thickness.
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