Speciation of aluminium in silicon carbide by electrothermal vaporization-inductively coupled plasma atomic emission spectrometry

Jürgen Hassler, G. Záray, Karl Schwetz, Karol Flórián

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

An electrothermal vaporization-inductively coupled plasma atomic emission spectrometric (ETV-ICP-AES) method was developed for rapid determination of binder and lattice phase aluminium in liquid-phase sintered silicon carbide (LPS-SiC) materials. By means of thermal fractionation the binder and the lattice phase aluminium were evaporated from the solid sample in temperature ranges of 1250-2000 and 2000-2450°C, respectively. Due to the decomposition of silicon carbide matrix above 2000°C, and the vaporization of silicon, a strong matrix effect was observed which resulted in different sensitivities for determination of the binder and the lattice phase aluminium. Therefore the calibration needed two calibration curves determined by home-made solid standard materials in the above mentioned temperature ranges. Using this method aluminium can be measured in concentration range of 0.1-2.0% in two different phases within 90 min. The time demand of the conventional wet chemical method amounts to 16 h. The analytical data determined by the ETV-ICP-AES method deviate from the wet chemical results maximum by -13 and +20%, which is acceptable for the technological control of the LPS-SiC production.

Original languageEnglish
Pages (from-to)954-956
Number of pages3
JournalJournal of Analytical Atomic Spectrometry
Volume20
Issue number9
DOIs
Publication statusPublished - Sep 2005

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Inductively coupled plasma
Aluminum
Vaporization
Spectrometry
Sintered carbides
Binders
Calibration
Liquids
Silicon
Fractionation
Decomposition
Temperature
silicon carbide

ASJC Scopus subject areas

  • Spectroscopy

Cite this

Speciation of aluminium in silicon carbide by electrothermal vaporization-inductively coupled plasma atomic emission spectrometry. / Hassler, Jürgen; Záray, G.; Schwetz, Karl; Flórián, Karol.

In: Journal of Analytical Atomic Spectrometry, Vol. 20, No. 9, 09.2005, p. 954-956.

Research output: Contribution to journalArticle

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