Determination of thermal conductivity of magnesium-alloys

Abstract

An indirect method, Angstroms method was adopted and an instrument was designed to determine the thermal conductivity of magnesium metal and alloys. Angstroms method is an axial periodic heat flow technique by which the thermal diffusivity can be measured directly. Then thermal conductivity can be obtained with relation to thermal diffusivity. Compared with the recommended data from the literature the fitted values of the thermal diffiusivity correspond with 3%, and the credible probability of the thermal conductivity in the range of 0–450 °C is about 95%. The method is applicable in the given temperature range.

Keywords

angstroms method / thermal conductivity / thermal diffusivity / magnesium-alloy

References

[1] Sabuga W, Hammerschmielt V. A new method for the evaluation of thermal conductivity and thermal diffusivity from transient hot strip measurements[A]. The 12th Symposium on Thermophysical Properties (Subsecond Thermophysics 2)[C]. NIST/ASME. June 1998.

[2] Righini D, Spisiak J, Bussoline G C, et al. Measurement of thermophysical properties by a pulse-heating method[A]. The 12th Symposium on Thermophysical Properties (Subsecond Thermophysics 2)[C]. NIST/ASME. June 1998.

[3] LamvikM J. Determination of thermal diffusivity of solid by use of periodic heat flow[J]. Intern J of Thermophysics, 1980, 1(2): 233-233

[4] TouloukianY S, KirbyR K, TaylorR E, et al.Thermophysial properties of matter (Vol. 12 Thermal expansion)[M], 1975, New York, IFI/Plenum

[5] TouloukianY S, BuycoE HThermophysical properties of matter (Vol.4 Specific Heat)[M], 1970, New York, IFI/Plenum

[6] Dons A L. Personal Communication[M]. SINTEF, 1995.

[7] TouloukianY S, PowellR W, HoC Y, et al.Thermophysial properties of matter (Vol. 10 Thermal Diffusivity)[M], 1973, New York, IFI/Plenum