Microstructures and Properties of Ni25 and Fe304 Repairing Layers Prepared by Plasma Surfacing

Abstract:

Microstructures and properties of plasma surfaced Ni25 and Fe304 layers prepared on nodular cast iron substrate were investigated. The study showed that the interface boundary existed between the layers and substrate. Compared with typical microstructures of welded joint, the similar columnar grains in the layers perpendicular to the interface line were observed, which were hardly seen in the plasma sprayed coating. The conclusion could be drawn that the bonding between the Ni25 and Fe304 layers and nodular cast iron substrate belonged to the metallurgical cohesion. The XRD analysis showed that the metal compounds such as Ni₄B₃，Cr₇BC₄，γ-(Fe, Ni) and Cr₇C₃ were found in the layers. The study demonstrated that the layers had proper strength and hardness to repair the surface defects of the nodular cast iron.

• Periodical: Advanced Materials Research (Volumes 466-467)
• Pages: 357-360
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.466-467.357
• Online since: February 2012
• Authors: Wen Quan Wang, Bao Sheng Lu, Chang Long Shan
• Keywords: Fe304 Powder, Microstructure, Ni25 Powder, Plasma Surfacing, Property Analysis

References

[1] W.T. Durbin: American Society of Mechanical Engineers, International Combustion Engine Division (Publication) Vol. 13 (1990), P. 143-147.

[2] R. Rusev, T Abbott: Proceedings of the Institution of Civil Engineers: Engineering and Computational Mechanics Vol. 162(2009), P. 127-139.

DOI: 10.1680/eacm.2009.162.3.127

[3] J.M. Maker, B. Rajani. Journal of Materials in Civil Engineering Vol. 12(2000), P. 245-253.

[4] M. Ebrahimnia, F. Ghaini: Materials and Design Vol. 33(2011), P. 551-556.

[5] H. Minaqata, K. Yoshizaki: New Pipeline Technologies, Security and Safety Vol. 1(2003), P. 621-628.

[6] M. Brown, A. Fam: Polymer Engineering and Science Vol. 48(2008), P. 1231-1239.