Hi,

on the oxidation rate of NiO at elevated temperatures you can find many papers on google, e.g.:

D.J. Progar, B.W. Lewis

A Study of Oxidation Kinetics of Nickel Metal in Flowing Air and Oxygen-Nitrogen Mixtures

Langley Research Center, 1964

Generally, the scale thickness increases with increasing time and temperature, but depends also on the environment and other factors. Thereby, I think its difficult to identify one specific "typical thickness". Of course the oxide growth will stop when all Ni from the film is oxidized, so this would be the max. thickness of NiO on a Ni film.

In oxidation tests the oxidation rate is often determined by measuring the samples weight before and after the test. The weight gain is related to the oxide growth. If its known which oxide is present (and if the oxide grows perfect, without pores, cracks,...) the oxide thickness related to weight gain can be finally determined. However, this is only suitable if the oxide growth on all sites of the sample is the same.

Hope this suits your question. Best regards

Dear Martin and Rando,

Thanks for your answer. I am aware that time and temperature affect the total oxide thickness. What I meant by "typical thickness" was the thickness of native NiO layer on top of pure solid Ni, oxidized at room temperature, when exposed to atmosphere. One way to measure this would be XPS depth analysis. I am actually going to run this experiment myself on my recently deposited Ni thin films . So I'm looking for a benchmark for comparison.

Again, I appreciate your help,

Pouyan

Hi,

maybe you'll find in the following paper a reference for nickel oxidation at room  temperature:

Room-temerature oxidation of Ni(110) at low and atmospheric oxygen pressures

E. S. Lambers, C. N. Dykstal, J. M. Seo, J. E. Rowe, P. H. Holloway

Oxidation of Metals Vol. 45, p. 301-321 (1996)

See especially Fig. 13!

Hope this helps. Good luck with your experiments!

Best regards

Thanks Martin, this was actually quite useful. 

HI Pouyan,

What did you find out from your research. I have the same question.

Thanks.