Chemical Composition and Microstructure of the Shells of HSS, HiCr and ICDP Work Rolls

A saying is attributed to Wolfgang Pauli: ‘The solids were created by God, but surfaces were the work of the Devil’, and it is on the surfaces that friction occurs. Atoms or molecules inside a solid interact with similar atoms or molecules. Those on the surface interact with those atoms or molecule inside the solid, but even more with the totally different substances and phenomena in the outside world.