Fig. 2From: Characteristic of the Nanoparticles Formed on the Carbon Steel Surface Contacting with 3d-Metal Water Salt Solutions in the Open-Air SystemThe TG-DTA curves for the phases formed on the steel surface. The 3d-metal water salt solutions contacting with the steel surface: a CoSO4, b CuSO4, c NiSO4, d NiCl2 Back to article page