Determination of Oxygen in Iron-Aluminum Alloy by Inert Gas Fusion-Infrared Absorptiometry

Ryo Inoue, Hideaki Suito

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

The method for the determination of oxygen in iron containing aluminum was studied by use of the inert gas fusion-infrared absorptiometry as a function of flux, temperature and heating pattern. The double graphite crucibles containing Sn in excess of four times as much as the sample weight were first degassed at 3000 K, and the temperature was lowered to 2630~2760 K. Then the sample enclosed by nickel capsule was dropped into the tin bath and fused for 30 s. This analytical procedure made the oxygen determination in an Fe-10~15 mass%Al alloy possible without observation of “gettering effect” due to aluminum. The value for oxygen recovery was confirmed to be almost 100% by the analysis of alumina powder. The results for the oxygen in a Ti-25~51 mass%Al alloy was also discussed.

Original languageEnglish
Pages (from-to)1164-1169
Number of pages6
JournalMaterials Transactions, JIM
Volume32
Issue number12
DOIs
Publication statusPublished - 1991 Jan 1

Keywords

  • alumina
  • aluminum alloy
  • gettering
  • inert gas fusion-infrared absorptiometry
  • nickel capsule
  • oxygen analysis
  • tin bath

ASJC Scopus subject areas

  • Engineering(all)

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