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Thermoanalytical Study of the Composition of β-tungsten

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Abstract

The aim of the present work was to provide arguments to the almost ‘hystorical’ problem of what β-tungsten is.

WO3was reduced in dry H2gas atmosphere in order to examine, whether β-tungsten formed in such a way contains oxygen as part of the lattice described as WxO (e.g. W20O) or is a pure metallic phase of tungsten.

As a result of thermoanalytical measurements and of chemical analysis for oxygen, the assumption is supported that in the 600-800°C temperature range of metal formation not the WxO (β-W)→W(α-W) transformation but the β-W→α-W structural rearrangement of materials with identical chemical composition is the most probable process.

The earlier opinion that the formation of the β-W structure requires the presence of oxygen atoms was not verified by our results.

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  1. Research Institute for Technical Physics of the Hungarian Academy of Sciences, H-1047 Budapest, Fóti út 56, P.O. Box 76, H-1325 Budapest, Hungary

    A. B. Kiss

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Kiss, A.B. Thermoanalytical Study of the Composition of β-tungsten. Journal of Thermal Analysis and Calorimetry 54, 815–824 (1998). https://doi.org/10.1023/A:1010143904328

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