Fig. 4: Post corrosion solution analysis of SLS in acid.

a Equivalent dissolution thickness for SLS treated in a pH 1 solution of nitric acid. The symbols represent the equivalent dissolution thickness calculated from the ICP data of individually marked element, and the dashed lines are the resulting fit to the shown equations. The raw ICP data can be found in SI 3. b Pictures of a representative sample of SLS after 60 days of treatment, before and after drying. The high clarity of the sample when dried, as well as the low roughness shown in the 3D optical profilometry scan, supports that the surface of the sample is smooth and does not have a gel layer.