The Influence of Temperature on Oxide-Scale Formation during Erosion--Corrosion
Journal article, 2005

Four steels (Fe2.25Cr1Mo, Fe9Cr1Mo, AISI 304, 353 MA) and one Nibased superalloy (Inconel 625) were exposed in an erosion-corrosion test rig at the temperatures 20, 350, 550 and 700°C for 1 week. The atmosphere was air and the particle velocity 1.2 m/s. The composition and thickness of the developed surface layers were determined by Auger electron spectroscopy and X-ray photoelectron spectroscopy. The ferritic and Ni-based alloys investigated show a minimum in wastage rate around 350°C due to the development of a particle strengthened/toughened composite layer on the surface. The greatest wastage rates were measured at 700°C. Rapid diffusion paths created in the oxide from the particle bombardment results in the growth of oxide nodules at the oxide/metal-interface causing protruding oxide flakes which are chipped away. At this temperature the ferritic steel Fe9Cr1Mo is degraded to a larger extent than the austenitic steels.

erosion--corrosion

AES

surface analysis

particle strengthening

XPS

Author

Rikard Norling

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Anders Nylund

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Oxidation of Metals

0030-770X (ISSN) 1573-4889 (eISSN)

Vol. 63 1-2 87 - 111

Subject Categories

Materials Engineering

DOI

10.1007/s11085-005-1953-4

More information

Created

10/6/2017