1. A Novel Vibrating Finger Viscometer for High-Temperature Measurements in Liquid Metals and Alloys.
- Author
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Dubberstein, T., Schürmann, M., Chaves, H., Heller, H.-P., and Aneziris, C.
- Subjects
VISCOSIMETERS ,LIQUID metals ,DYNAMIC viscosity ,FIELD coils in electric generators ,ARRHENIUS equation - Abstract
A novel vibrating finger viscometer for high-temperature measurement in liquid metals and alloys up to 1823 K was constructed. The dynamic viscosity ( $$\eta $$ ) of the liquid fluid is measured as a product of $$(\rho \cdot \eta )^{0.5}$$ and the relative change of the field coil input for a constant amplitude recording at the resonant frequency of the oscillator. The viscometer was calibrated at 298 K using reference silicon oils with varying kinematic viscosities ( $$\nu $$ ), $$(0.79\hbox { to } 200)\times 10^{-6}\hbox { m}^{2}\cdot \hbox {s}^{-1}$$ . In the present study, the viscosity of liquid gold ( $$99.99\,\%$$ Au), silver ( $$99.9\, \%$$ Ag), and tin ( $$99.9\,\%$$ Sn) was measured. The viscosities expressed as an Arrhenius function of temperature are: The viscosity values are consistent within the range of available literature data. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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