Microstructure and Properties of Laser Fused Nickel Based Self Fluxing Alloy Coating


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The thermal sprayed coatings are widely used in waste incineration boilers and fossil fuel-fired boilers. However, the defects, such as porosity, cracks and unmelted particles, in these coatings are detrimental to corrosion performance. In this study, the nickel based self fluxing alloy coating was fused by YAG laser to improve performance of the coating. Under appropriate laser parameters, the nonporous, crack-free coating was produced. The rubber wheel type abrasion wear test and hot corrosion test conducted in the presence of a mixed salt of Na2SO4/NaCl/KCl at 650°C showed that the modified coating exhibited excellent wear and corrosion resistances compared with the as sprayed and gas fused coatings.



Advanced Materials Research (Volumes 15-17)

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer and C. Ravindran




Y. Li et al., "Microstructure and Properties of Laser Fused Nickel Based Self Fluxing Alloy Coating", Advanced Materials Research, Vols. 15-17, pp. 135-140, 2007

Online since:

February 2006




[1] Y. Kawahara: Mater. High Temp., 14(3) (1997), P261-268.

[2] Masayuki Yoshiba, Waste Management Research, Vol. 13, No. 1 (2002), P38.

[3] E.J. Morgan-Warren: Welding Met. Fabric., January/February (1992), P25-31.

[4] E.P. Latham, D.B. Meadowcroft, L. Pinder, Materials Science and Technology, 5 (1989), P 813.

[5] W.M. Steen, Laser Material Processing, 1st ed., (Springer-Verlag, London 1996).

[6] N. Suzuki, corrosion·corrosion prevention handbook (Maruzen publisher, Japan 2000). 0 50 100 150 200 As sprayed Gas fusing Laser fusing Corrosion depth (μm) Na2SO4: NaCl: KCl=1: 1: 1 (molar ratio) 650℃ 24h Local corrosion General corrosion Fig. 11 The results of corrosion test Fig. 12 Local corrosion of gas fused coating.

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