Variations in orientation of etch pits on graphite surfaces
- 1 September 1963
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 8 (93) , 1513-1518
- https://doi.org/10.1080/14786436308207314
Abstract
A study has been made of the dependence of etch-pit shape upon oxidizing temperature for oxygen and for nitric oxide. For nitric oxide it has been established that, at 873°c, rates of oxidation in and in directions are comparable since dodecagonal pits are obtained on the {0001} surfaces. Below and above this temperature the etch pits are hexagonal, being respectively [parallel] and [perpendicular] to the twin lamellae (sides of pits are in and directions respectively). For oxygen [parallel] and [perpendicular] pits have also been observed, and the temperature at which the rates of oxidation in and in directions are comparable lies beyond 900°c.Keywords
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