DOI: 10.1098/rspa.1939.0124. The kinetics of the formation of oxygen films on tungsten

The kinetics of the formation of oxygen films on tungsten

10.1098/rspa.1939.0124

Crossref journal-article

The Royal Society

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences (175)

Abstract

1. Experimental results In the preceding paper the application of a method for maintaining a very low steady pressure of oxygen to determine the nature of the complex adsorbed layer of this gas on tungsten has been described. We shall now discuss the use of the method to study the process of formation of the adsorbed film. In figure 1 the accommodation coefficient of neon is plotted as a function of the time. At the instant indicated by the arrow oxygen was admitted to the bulb B (see figure 1 of the preceding paper). It will be seen that at the beginning of the experiment, i.e. before the oxygen was admitted, the amount of impurity in the neon was so small that the drift was practically negligible. An idea of the sort of eonditions that are necessary for the drift to be negligible will be realized from the fact that the partial pressure of oxygen established at the wire in this particular experiment was only 2·3 x 10 -9 mm. of mercury. The gradient da/dt of this and similar curves was measured at various points, and in no case were measurements included for points less than 2 min. after the admission of the oxygen. Experimental and theoretical considerations indicate that by this time a steady pressure of oxygen was established at the wire.

Bibliography

The kinetics of the formation of oxygen films on tungsten. (1939). Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 173(952), 13â27.

Authors 0

None

References 3 Referenced 13

10.1021/cr60024a002
{'key': 'p_2', 'first-page': '445', 'article-title': 'P ro c .R o y', 'volume': '152', 'year': '1935', 'journal-title': 'Soc. A'} / Soc. A / P ro c .R o y (1935)
{'key': 'p_3', 'first-page': '293', 'article-title': 'Proc. Camb. P h il', 'volume': '35', 'author': 'Miller A. R .', 'year': '1939', 'journal-title': 'Soc.'} / Soc. / Proc. Camb. P h il by Miller A. R . (1939)

Dates

Type	When
Created	18 years, 8 months ago (Dec. 18, 2006, 5:35 p.m.)
Deposited	4 years, 6 months ago (Feb. 19, 2021, 5 a.m.)
Indexed	1 year, 6 months ago (Feb. 10, 2024, 1:24 p.m.)
Issued	85 years, 9 months ago (Nov. 10, 1939)
Published	85 years, 9 months ago (Nov. 10, 1939)
Published Online	28 years, 8 months ago (Jan. 1, 1997)
Published Print	85 years, 9 months ago (Nov. 10, 1939)

Funders 0

None

BibTeX

@article{1939, volume={173}, ISSN={2053-9169}, url={http://dx.doi.org/10.1098/rspa.1939.0124}, DOI={10.1098/rspa.1939.0124}, number={952}, journal={Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences}, publisher={The Royal Society}, year={1939}, month=nov, pages={13–27} }

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  "abstract": "<jats:p>\n            1. Experimental results In the preceding paper the application of a method for maintaining a very low steady pressure of oxygen to determine the nature of the complex adsorbed layer of this gas on tungsten has been described. We shall now discuss the use of the method to study the process of formation of the adsorbed film. In figure 1 the accommodation coefficient of neon is plotted as a function of the time. At the instant indicated by the arrow oxygen was admitted to the bulb\n            <jats:italic>B</jats:italic>\n            (see figure 1 of the preceding paper). It will be seen that at the beginning of the experiment, i.e. before the oxygen was admitted, the amount of impurity in the neon was so small that the drift was practically negligible. An idea of the sort of eonditions that are necessary for the drift to be negligible will be realized from the fact that the partial pressure of oxygen established at the wire in this particular experiment was only 2\u00b73 x 10\n            <jats:sup>-9</jats:sup>\n            mm. of mercury. The gradient\n            <jats:italic>da/dt</jats:italic>\n            of this and similar curves was measured at various points, and in no case were measurements included for points less than 2 min. after the admission of the oxygen. Experimental and theoretical considerations indicate that by this time a steady pressure of oxygen was established at the wire.\n          </jats:p>",
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