| Abstract: | The influence of microgeometry on corrosion - (III)Atmospheric corrosion with capillary condensation While there is no condensation on a smooth surface, such a condensation can take place even at relative humidities below 100% in the case of complex and in particular capillary surface. The conditions existing on such a surface can be approximated by a model involving hemi-spherical elevation in contact with each other. On the basis of this model it is possible to calculate the rate to be expected in terms of the geometrical parameter. It is shown that the corrosion effect at the contact points increases as the radius of the hemi-spheres is increased, while the overall corrosion is reduced since the overall number of hemispheres per unit surface is reduced in this case. |
