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Homepage>BS EN 725-1:2007 Advanced technical ceramics. Methods of test for ceramic powders Determination of impurities in alumina

BS EN 725-1:2007

Advanced technical ceramics. Methods of test for ceramic powders Determination of impurities in alumina

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Označení normy:	BS EN 725-1:2007
Počet stran:	14
Vydáno:	2007-10-31
ISBN:	978 0 580 54527 6
Status:	Standard

DESCRIPTION

BS EN 725-1:2007

This standard BS EN 725-1:2007 Advanced technical ceramics. Methods of test for ceramic powders is classified in these ICS categories:

81.060.30 Advanced ceramics

This Part of EN 725 specifies one fusion and one acid dissolution method for the determination of elements of sodium, potassium, iron, silicon, calcium and magnesium present as impurities in alumina using atomic absorption spectroscopy (AAS) or inductively coupled plasma (ICP) spectroscopy. For each element present as impurities, the methods are applicable to the following ranges, calculated as oxides : - Sodium oxide: 20 ppm to 6000 ppm - Potassium oxide: 20 ppm to 100 ppm - Ferric oxide: 20 ppm to 300 ppm - Silica: 50 ppm to 2000 ppm - Calcium oxide: 20 ppm to 700 ppm - Magnesium oxide: 5 ppm to 1000 ppm

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