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Vol.2 , No. 5, Publication Date: Oct. 29, 2016, Page: 35-38
 between the treated samples embedded in the powder agents. Optical microscopy (OM), X-ray diffraction (XRD) and oxidation test at 800°C were used to characterize the microstructures, phase constituents and high temperature oxidation resistance. The results show that DCF cansignificantly enhance powder Al and Si codeposition, lower treating temperature and duration can be used comparing with the conventional pack cementation processes to get the same layer thickness. The intermetallic coatings mainly consisted of Al<sub>0.7</sub>Fe<sub>3</sub>Si<sub>0.3</sub> and AlFe<sub>3</sub> can provide effective protection against high temperature oxidation at 800°C.&picture=http://www.aascit.org/aascit/decorators/img/journal/891.jpg)
| [1] | Xiang Du, Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou, China. |
| [2] | Fei Xie, Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou, China. |
| [3] | Xianbo Pan, Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, China. |
| [4] | Jing Hu, Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou, China. |
A rapid powder Al and Si codeposition process was developed for AISI 1045 steel on the basis of conventional pack cementation processes by applying direct current field (DCF) between the treated samples embedded in the powder agents. Optical microscopy (OM), X-ray diffraction (XRD) and oxidation test at 800°C were used to characterize the microstructures, phase constituents and high temperature oxidation resistance. The results show that DCF cansignificantly enhance powder Al and Si codeposition, lower treating temperature and duration can be used comparing with the conventional pack cementation processes to get the same layer thickness. The intermetallic coatings mainly consisted of Al0.7Fe3Si0.3 and AlFe3 can provide effective protection against high temperature oxidation at 800°C.
Keywords
Codeposition, Pack Cementation, Coatings, Direct Current Field
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