Early stages of oxidation of ion-implanted nickel at high temperature

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Oxid. Met.; (United States)

DOI:https://doi.org/10.1007/BF00611353· OSTI ID:6667893

Peide, Z ^[1]; Grant, W A; Procter, R P.M.

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1. Corrosion and Protection Centre, University of Manchester Institute of Science and Technology, Manchester M60 1QD (GB)

The early stages of oxidation of nickel implanted with nickel, chromium, or lithium ions in oxygen at 1100/sup 0/C have been studied using various electron-optical techniques. The unimplanted metal develops initially a fine-grained, convoluted scale having a ridged, cellular structure. Subsequently, the oxide grains increase in size significantly and oxidation becomes predominantly controlled by diffusion of Ni /sup 2+/ ions across a compact, columnar scale. Implantation of the surface with nickel ions has no significant effect on the initial oxidation behavior. However, after implantation with chromium or lithium ions, the development of the NiO scale is, in the early stages of oxidation, suppressed by formation of NiCr/sub 2/O/sub 4/ or LiO/sub 2/ nodules, respectively. Subsequently, the implanted species are incorporated into the steady-state NiO scale where they dope the oxide and thus influence the diffusion rate of Ni /sup 2+/ ions through it. As would be predicted, the steady-state oxidation rate of chromium-implanted nickel is increased while that of lithium- implanted nickel is decreased compared with that of the unimplanted metal.

• OSTI ID: 6667893
• Journal Information: Oxid. Met.; (United States), Journal Name: Oxid. Met.; (United States) Vol. 16; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
CHARGED PARTICLES
CHEMICAL REACTIONS
CHROMIUM IONS
ELEMENTS
ION IMPLANTATION
IONS
ISOTHERMAL PROCESSES
LITHIUM IONS
METALS
NICKEL
NICKEL IONS
OXIDATION
TRANSITION ELEMENTS