engleski

The influence of the base material surface preparation on the properties of thermally sprayed coatings

Using specimens, a research was conducted to determine the influence of the base material surface preparation for 42CrMo4 on the final coating, prior to actual thermal spraying. During thermal spraying, an Al-Ni-alloy was used as an interlayer before the actual coating with Cr-Mo-Ni. The surface hardness and the hardness distribution across the tickness of the sprayed coating were measured and the structureof respective sprayed coatings was photographed. A comparison of experimental results enabled the identification of the particular material preparation method with an optimal ratio of the satisfactory coating tickness and its hardness.

thermal spraying; gas flame; surface preparation; hardness; steel 42CrMo4

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