科研之友
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摘要
In the present work thermal reactive diffusion (TRD) coatings of Cr+B were prepared on AISI 52100 steel using a chromizing treatment and a boriding treatment. The microstructures, phase compositions and elemental distributions of the coatings were systematically investigated. In addition, the influence of treatment temperature on the thickness and phase composition of the coating layer was also further determined. The results demonstrated that the phases formed on the steel surface were CrB, Cr7C3 and Fe2B. The higher treatment temperature resulted in a thicker chromium boride coating. The thickness of the chromium boride coatings increased from 48 mu m to 272 mu m with an increase of the treatment temperature. The boron reacted with the chromium carbide layer formed in the chrominizing stage and then penetrated into the layer to form Fe2B.
- 出版日期2018
- 单位华中科技大学
