Abstract

Aluminium samples were doped with an assortment of impurities and the shifts of their equilibrium melting curves were determined under static adiabatic experimental conditions. The shift of run-off temperatures (i.e. when the sample temperature breaks off from the melting `plateau' and rapidly begins to rise) of originally 99.9999% pure Al samples caused by impurities was determined to be as follows (in millikelvin per part per million (ppm) by weight): Ag, −0.12; Zn, −0.16; Cu, −0.29; Fe, −0.35; In, −0.21; Quartz, −0.33; Si, −0.66; Ti, +3.30; Mn, −0.063; Cd, −0.10; Sb, −0.19; Ca ?; Ni, −0.43.

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