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Synthesis of nickel base alloys for use as magnetic standards

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Abstract

The goal of this research is to prepare a series of alloys having sharp, reproducible magnetic transitions for calibrating temperature in thermogravimetry from the magnetic transition temperature of pure cobalt (1121°C) to below room temperature.

Alloys in the Ni-Co and Ni-Cu systems were prepared by the thermal decomposition of coprecipitated oxalates in argon. The alloys were subsequently annealed under 5% hydrogen.

Magnetic transition temperatures were measured using simultaneous thermomagnetometry/differential thermal analysis. Transition temperatures were corrected using well known meltingpoint standards. Magnetic transition temperatures along with precision are reported as a function of composition.

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Authors and Affiliations

  1. Departments of Chemistry and Materials Science and Engineering, The Ohio State University, 43210-1173, Columbus, OH, USA

    E. M. Gundlach & P. K. Gallagher

Authors
  1. E. M. Gundlach
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  2. P. K. Gallagher
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Gundlach, E.M., Gallagher, P.K. Synthesis of nickel base alloys for use as magnetic standards. Journal of Thermal Analysis 49, 1013–1016 (1997). https://doi.org/10.1007/BF01996788

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