Résumé
Specifies a photometric method for the determination of the titanium content (annex A), a gravimetric method for the determination of tantalum contents greater than 1 % (m/m) (annex B) and a photometric method for the determination of tantalum contents less than 1 % (m/m) (annex C). The methods are applicable to ferroniobium having niobium contents between 40 and 75 % (m/m), tantalum contents between 0,25 and 8,0 % (m/m) and titanium contents between 0,05 and 5,0 % (m/m). Interference may arise if bismuth or trivalent antimony are present.
Informations générales
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État actuel: AnnuléeDate de publication: 1982-12Stade: Annulation de la Norme internationale [95.99]
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Edition: 1Nombre de pages: 14
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Comité technique :ISO/TC 132ICS :77.100
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