Title :
The microstructure and performance of Cr3C2/Fe/Al composite coating
Author :
Guang Chen ; Wenbiao Gong
Author_Institution :
Dept. of Mech. Eng., Changchun Inst. of Technol., Changchun, China
Abstract :
The Cr3C2/Fe/Al composite coating on 20g steel substrate was prepared by arc spraying method. The microstructure and hot-corrosion resistance at 650°C were investigated by means of XRD, SEM and etc. The results show that the coating exhibits the typical lamellar structure with great combinability. The porosity of coating is 8.6%. With the increasing of temperature, the hot-corrosion rate of coating all increased. The film of Al2O3 and Cr2O3 were formed after the hot-corrosion, which prevented the coating from further corrosion. The hot-corrosion resistance of coating is superior. The coating makes an effective contribution to the protection of the four tubes´ heat corrosion.
Keywords :
X-ray diffraction; aluminium; chromium compounds; composite materials; corrosion resistance; iron; porosity; scanning electron microscopy; spray coating techniques; Cr3C2-Fe-Al; SEM; XRD; arc spraying method; composite coating; four tube heat corrosion; hot-corrosion resistance; lamellar structure; microstructure; porosity; temperature 650 degC; Coatings; Corrosion; Iron; Materials; Resistance; Spraying; Cr3C2/Fe/Al Coating; arc spraying; hot-corrosion resistance;
Conference_Titel :
Mechatronic Science, Electric Engineering and Computer (MEC), 2011 International Conference on
Conference_Location :
Jilin
Print_ISBN :
978-1-61284-719-1
DOI :
10.1109/MEC.2011.6025751
