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An Apparatus for Differential Thermal Analysis under Controlled Atmosphere Conditions

Published online by Cambridge University Press:  14 March 2018

B. D. Mitchell  and
R. C. Mackenzie
B. D. Mitchell
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen
R. C. Mackenzie
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen
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Abstract

The apparatus described enables investigations to be carried out in any desired gas or vapour at pressures not far removed from atmospheric. Two different specimen-holder blocks have been developed: a nickel one for use with inert gases (e.g., nitrogen) and high sensitivity of recording, and a ceramic one for use with active gases and vapours (e.g., oxygen or water vapour) and rather lower sensitivities. Evacuation of the system to pressures of less than 0·05 mm Hg is also possible. The temperature control system consists of a commercial anticipatory temperature controller and a motorized autotransformer; the differential thermal curve is recorded photographically. Some results are given to illustrate the high sensitivity of the apparatus, its application to highlyorganic soil-clays and to the study of combustion reactions.

Type
Research Article
Information
Clay Minerals Bulletin , Volume 4 , Issue 21 , August 1959 , pp. 31 - 43
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1959

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References

Refrences

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