In data published by Cheng and Luo (British Corrosion Journal, 2000), the variance to mean ratio of the number of pitting events on carbon steel is less than 1. It is here argued that this is evidence for inhibition between events, not for promotion. The branch of probability known as renewal theory is useful for analysing counts of events occurring in time, the intervals between them, and the intensity of events.
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References
1.
ChengY. F. and LUOJ. L.: Br. Corros. J., 2000, 35, 125–130.
2.
LuntT. T., PRIDES. T., SCULLYJ. R., HUDSONJ. L., and MIKHAILOVA. S.: J. Electrochem. Soc., 1997, 144, 1620–1629.
3.
WUB., ScullyJ. R., HUDSONJ. L., and MIKHAILOVA. S.: J. Electrochem. Soc., 1997, 144, 1614–1620.
4.
CoxD. R.: ‘Renewal theory’; 1962, London, Methuen.
5.
SmithW. L.: in ‘Encyclopedia of statistical sciences’, Vol. 8, 30–36: 1988, New York, NY, Wiley.
