Liu, H.; He, Y.; Swaminathan, S.; Rohwerder, M.; Li, L.: Effect of dew point on the surface selective oxidation and subsurface microstructure of TRIP-aided steel. Surface and Coatings Technology 206 (6), pp. 1237 - 1243 (2011)
If manganese nodules can be mined in an environmentally friendly way, the critical metals needed for the energy transition could be produced with low CO2 emissions