Thermal Expansion of Nickel to 2300 K

  • W. D. Drotning


The thermal expansion of nickel was measured from ambient temperature to 2300 K using the gamma attenuation technique. The high temperature measurement system uses a high-vacuum tungsten mesh furnace designed for passage of a collimated gamma beam through the sample region. The gamma counting system incorporates a thermostatically-controlled detector and automatic gain control to achieve count rate stability. A precision analysis is given for the use of the technique to measure changes in molten density as a function of temperature, and a discussion of possible systematic errors in the use of the measurement technique is presented. The linear thermal expansion of solid nickel from ambient to the melting point (1728 K) was observed to be slightly larger than provisional values suggested in the literature. The thermal expansion of molten nickel was measured from melt to 2300 K. The volumetric expansion coefficient was found to be −(7.35 ± 0.09) × 10−4 g/cm3 K over this temperature range, which is compared with measurements by previous investigations which range from −6.4 to −12.1 × 10−4 g/cm3 K.


Thermal Expansion Linear Thermal Expansion Automatic Gain Control Molten Material Mass Attenuation Coefficient 
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Copyright information

© Purdue Research Foundation 1982

Authors and Affiliations

  • W. D. Drotning
    • 1
  1. 1.Sandia National LaboratoriesAlbuquerqueUSA

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