Abstract

A method has been developed for the analysis of hafnium metal for aluminum, copper, iron, titanium, and tungsten in the ppm range and zirconium in the 1 0-4.0% range. Solid machined pieces 1 × 1 in. or larger are used. Spectra are excited with a low voltage ignited ac arc with low inductance and capacitance. Hafnium serves as the internal standard. The method offers an increase in speed and improved precision over the carrier distillation technique which has been commonly used.

Quantitative Spectrographic Analysis of Zirconium-Hafnium Mixtures*

Velmer A. Fassel and Charles H. Anderson
J. Opt. Soc. Am. 40(11) 742-747 (1950)

X-Ray Spectroscopy as a Control Method in the Production of Zirconium and Hafnium

D. M. Mortimore and P. A. Romans
J. Opt. Soc. Am. 42(9) 673-677 (1952)

Spectrographic Determination of Trace Elements in 70/30 Brass and Admiralty Brass. Part I*

P. A. Leichtle
J. Opt. Soc. Am. 34(8) 454-463 (1944)

The Spectrographic Analysis of Ferro-Silicon

J. H. Coulliette
J. Opt. Soc. Am. 37(8) 609-613 (1947)

The Spectrographic Flat Surface Sparking Technique of Steel Analysis*

Charles L. Guettel
J. Opt. Soc. Am. 34(1) 41-46 (1944)