engleski

EFFECT OF SAMPLE DIMENSIONS AND FUSING TEMPERATURE ON COATING/BASE MATERIAL STRUCTURE OBTAINED BY FLAME SPRAYING

Flame sprayed Ni-based self-fluxing alloys are frequently used for repairing worn out parts in many industrial applications thus prolonging the service life of products. In practice, these alloys are used in sprayed and fused state. The main purpose of fusing (at temperatures higher than 1000 oC) is the densification of the coating after spraying and forming the metallurgical bond between the coating and base material. In order to investigate the influence of the fusing temperature on the structure of coating/base material system, but taking into account the dimensions of samples, two different NiBSi alloys were flame sprayed and simultaneously fused on the previously heat treated medium-carbon steel. The conclusion is drawn that the microstructure is influenced not only by high fusing temperature, but also by dimensions of the samples.

Coatings, Flame spraying, Fusing, NiBSi alloy

nije evidentirano