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Carburization-Enhanced Passivity of PH13-8 Mo: A Precipitation-Hardened Martensitic Stainless Steel

2010; Electrochemical Society; Volume: 13; Issue: 12 Linguagem: Inglês

10.1149/1.3491468

1944-8775

A. H. Heuer, H. Kahn, L. J. O'Donnell, F. Ernst, Guillaume Michal, Roy J. Rayne, F.J. Martı́n, Paul M. Natishan,

Metal Alloys Wear and Properties

Interstitial hardening of the martensitic stainless steel PH13-8 Mo has been achieved by low temperature gas-phase carburization. After treatment, hardness is increased to a depth of , with a surface hardness that is twice the core hardness and a corresponding improvement in pin-on-disk wear resistance. Pitting potential is increased by in 0.6 M NaCl. Elemental analysis and X-ray diffraction suggest the formation of a thin carbidic surface layer that is both wear and corrosion resistant.