발간논문

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Vol.34, No.4, 491 ~ 498, 1996
Title
Research Paper - Surface Treatment - : Surface Characteristics of Boronized Low Carbon Steel
윤영식Young Sic Youn, 김한삼Han Sam Kim, 김수식Soo Sik Kim
Abstract
In order to improve the mechanical properties and the corrosion resistance, paste boronizing was carried out in the temperature range of 700℃∼1050℃. Mechanical properties were measured by the microhardness and abrasion tests, and corrosion resistance was examined by potentio dynamic polarization test. The microhardness and wear resistance were increased with the increase of the boronizing temperature. The microhardness of boronized samples was about 1600Hv, which is approximately ten times higher than those of the low carbon steel. The increase of microhardness can be attributed to the formation of borides such as FeB and Fe₂B within the samples. The wear resistance of the boronized samples also were 5 times higher than that of the low carbon steel. Annealing of the samples enhanced the wear resistance and the corrosion resistance significantly, but did not enhance the microhardness. The activation energy for boronizing on the low carbon steel measured as 227 kJ/㏖ below 874℃ and 117kJ/㏖ above 874℃
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