-
oa Resistance Ratio and Purification of Platinum
- Source: Platinum Metals Review, Volume 16, Issue 3, Jul 1972, p. 94 - 100
-
- 01 Jan 1972
Abstract
Accurate correlation between the purity and the properties of platinum is essential both to quantify the properties of the metal with a view to its practical applications and to establish the behaviour of platinum as a representative metal for various physical and chemical measurements. The authors of this paper describe the systematic purification of a platinum bar by vacuum-melting and zone-refining. The final residual resistance ratio obtained was very high. The purity of the platinum, as indicated by optical and mass spectrography, then compared well with the best values previously reported.
© Johnson Matthey