Spectrophotometric Determination of Titanium in Super Alloys with Diantipyrylmethane and Tiron

Abstract

Diantipyrylmethane and tiron spectrophotometric determinations of Ti in the super alloys, Inconel 718 and Inconel 600, have been studied thoroughly. Both reagents formed stable yellow complexes with Ti(IV) in acidic medium. The possible interference from Ni, Fe and Cr was examined. Interference from Fe(III) was eliminated by the reduction of Fe(III) to Fe(II). Cr was removed as chromyl chloride which led to a dramatic improvement in the analytical results for Ti by the tiron photometric method. However, the removal of Cr was not necessary when the diantipyrylmethane method was employed. Consequently, lengthy manipulation of super alloys was required for the tiron determination. These two spectrophotometric methods are compared in terms of simplicity, reproducibility and accuracy.

The influence of substituting metals (Ti, V, Cr, Mn, Co and Ni) on the thermal stability of magnetite

“…Magnetite samples were synthesized by a precipitation-oxidation routine [21,22] The contents of Fe, Ti, V, Cr, Co, Mn, and Ni in the synthetic samples were measured spectrophotometrically by the phenanthroline [23], diantipyrylmethane [24], tungstovanadophosphoric acid [25], 1, 5 diphenylcarbohydrazide [26], nitroso R salt [27], potassium periodate [28], and dimethyglyoxime [29] methods, respectively. The chemical formulae of synthetic samples were obtained based on the chemical analysis results.…”