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Analytical control for the content of small amounts of oxygen in aluminum nitride powders using a «Metavak-AK» analyzer
https://doi.org/10.26896/1028-6861-2022-88-6-25-30
Abstract
A method for prompt and reliable control of low oxygen content in aluminum nitride powder using a modern gas analyzer «Metavak-AK» operating in automatic mode and never used previously for this object is presented. Aluminum nitride was obtained under conditions of pilot production at ISMAN by the method of self-propagating high-temperature synthesis (SHS). A program for operation of a «Metavac-AK» analyzer has been developed for oxygen determination in AlN samples and optimal conditions of analysis were specified: reductive melting of a sample in a graphite crucible at a furnace temperature of 2700°C in the presence of a combined Sn/Ni flux in a helium flow. The total oxygen content in aluminum nitride powders and the relative standard deviation ranged within 1.01 – 1.18% and 1.75 – 9.87%, respectively.
About the Author
N. V. Chapysheva
A. G. Merzhanov Institute of Structural Macrokinetics and Materials Science
Russian Federation
Russian Federation
Nina V. Chapysheva
8, Akademika Osip’yana ul., Chernogolovka, 142432
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Review
For citations:
Chapysheva N.V. Analytical control for the content of small amounts of oxygen in aluminum nitride powders using a «Metavak-AK» analyzer. Industrial laboratory. Diagnostics of materials. 2022;88(6):25-30. (In Russ.) https://doi.org/10.26896/1028-6861-2022-88-6-25-30
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