Effect of Fusing Treatment on Fatigue Strength of Thermally Sprayed Steels with Co-Based Self-Fluxing Alloy Coating

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Rotational bending fatigue tests were carried out on a medium carbon steel with a thermally sprayed Co-based alloy coating. The effect of two different fusing treatments on the fatigue strength of fused specimens was investigated. Fusing treatment was performed using a vacuum furnace, and an induction heating system. When the specimens were treated in vacuum furnace at 1373 K for 4 h, the diffusion layer providing a strong adhesive force were formed at the interface between the coating and substrate. As a result, fatigue strength remarkably increased in comparison with the uncoated specimens. On the contrary, for the treated specimens with an induction heating system at 1373 K for 120 s, since these specimens had a lower adhesive force due to no formation of diffusion layer, leading to delamination of the entire coating.

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

335-338

Citation:

J. S. Oh et al., "Effect of Fusing Treatment on Fatigue Strength of Thermally Sprayed Steels with Co-Based Self-Fluxing Alloy Coating ", Key Engineering Materials, Vols. 353-358, pp. 335-338, 2007

Online since:

September 2007

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$38.00

[1] J. U. Hwang, T. Ogawa and K. Tokaji: Fatigue Strength and Fracture Mechanisms of Ceramic-Sprayed Steel in Air and a Corrosive Environment, Fatigue Fract. Engng Mater. Struct., Vol. 17-7(1994), pp.839-848.

DOI: https://doi.org/10.1111/j.1460-2695.1994.tb00813.x

[2] Lech Pawlowski: The science and engineering of thermal spray coatings. John Wiley & Sons Ltd., Tokyo, (1995).

[3] T. Takeshita: M. S thesis, Dept. of Mechanical Engineering, Keio University, Japan, (1997).

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