Variations in orientation of etch pits on graphite surfaces
Journal Article
·
· Philosophical Magazine
A study was made of the dependence of etch-pit shape upon oxidizing temperature for oxygen and for nitric oxide. For nitric oxide it was established that, at 873 deg C, rates of oxidation in (1010) and in (1120) directions are comparable since dodecagortal 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 (1010) and (1120) directions respectively). For oxygen parallel and perpendicular pits were also observed, and the temperature at which the rates of oxidation in (1010) and in (1120) directions are comparable lies beyond 900 deg C. (auth)
- Research Organization:
- University Coll. of North Wales, Bangor, Eng.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-039591
- OSTI ID:
- 4652685
- Journal Information:
- Philosophical Magazine, Journal Name: Philosophical Magazine Journal Issue: 93 Vol. 8; ISSN 0031-8086
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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