Requirements to industrial processes for the thermal spraying of corrosion-resistant metal coatings on large-scale steel structures are formulated. The promise of high-velocity fuel·air flame spraying for this application is described. Regimes for the deposition of protective aluminum coatings by this process and their adherence characteristics were investigated. Metallographic studies including computer treatment of images of polished cross sections were carried out with the aid of the materials science software SIAMS.
air-fuel spraying - corrosion - coating - strength - adhesion - metallography - computer modeling