...RESULTS AND DISCUSSION Figure 1 shows the typical CPP curves obtained for specimens of UNS N08800, in 1 M Cl⁻ and 1 M Cl⁻ plus 10⁻³ M S₂O₃²⁻ naturally aerated solutions. Considering the amount of charge that circulated during...

...Abstract Pitting corrosion susceptibility of UNS N06600, UNS N06690 and UNS N08800 was studied in pure 1 M NaCl with and without Na₂S₂O₃ additions. The alloys were tested in the as-received (AR), solution annealed (SA) and aged (SA + A) conditions. The pitting...

... < alloy N08800. Corrosion potential measurements and potentiodynamic polarization experiments were performed in simulated crevice-like solutions to understand these results. UNS N06690 UNS N06600 UNS N08800 temperature chloride localized corrosion INTRODUCTION Ni-Cr-Fe alloy UNS N06690 and Fe-Cr-Ni...

...Table 1 Chemical Composition of UNS N08800 used for study Element Ni Cr Fe C Mn Si Ti (wt %) 27.2 21.6 45.49 0.05 2.31 1.37 0.71 The machining and 20 % cold working (unidirectional rolling of the plates) operations were carried out on the alloys. The optical microscopy...

... and product formation. Metal dusting UNS N06025 UNS N08800 SEM-EDX XRD INTRODUCTION Metal dusting is a severe form of corrosion in which iron, steels, Ni- and Co-based alloys disintegrate into metal or carbide particles in a coke deposit when exposed to strongly carburising gases (carbon activity...

...Abstract A failure analysis was conducted on a 1½ inch diameter UNS N08800 hydrogen unit preheat tube that failed in service. Based on chemical and metallographic analyses the failure was attributed to liquid metal embrittlement by zinc. The zinc source is thought to be the Cu/Zn catalyst...