sažetak izlaganja sa skupa
In an effort to improve the material protection of steel products against corrosion, this study investigates the efficiency of two different conversion coatings - phosphate and
zirconium - applied to steel samples with the same surface characteristics. This research aims to determine how these coatings, combined with varying powder coating
thicknesses, affect the material's resistance to corrosion in aggressive conditions, using an unstandardised visual evaluation method of salt spray test, which provides
detailed insight into the rate of corrosion spread. The observed area is the resistance spot weld, a critical site for corrosion initiation on wire products in real life. Preliminary
results indicate a potential solution for significantly improving protection, with special attention paid to the mechanisms of action of these coatings and their interaction with
powder coatings of different thicknesses. The comparative analysis offers insight into corrosion durability of spot-welded steel wire products. This research is expected to
contribute to the selection of the optimal technology for anti-corrosive protection of resistance welded steel wires, aiming to extend the corrosion durability of products. It
also seeks to identify a surface anti-corrosion protection technology that will minimise environmental impact.
resistance welding; cross welds; conversion coatings; powder coatings
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