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

Jeong Seok Oh; Jun Komotori; Jung Il Song; Tae Gyu Kim

doi:10.4028/www.scientific.net/KEM.353-358.335

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 353-358Effect of Fusing Treatment on Fatigue Strength of...

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

Abstract:

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.

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Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

335-338

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.335

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Online since:

September 2007

Authors:

Jeong Seok Oh, Jun Komotori, Jung Il Song, Tae Gyu Kim

Keywords:

Adhesive Strength, Fatigue Strength, Fracture Mechanic, Fusing Treatment, Thermally Sprayed

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References

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