Феррониобий. Определение содержания ниобия. Гравиметрический метод
Название (англ.):
Ferroniobium; Determination of niobium content; Gravimetric method
Описание (англ.):
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.
Дата регистрации:
01.01.83
Дата введения:
01.12.82
Код КГС:
В19
Код ОКСТУ:
0860;0809
Код ОКС(МКС):
77.100
Код ОКП:
0860;0809
Нормативные ссылки:
NF A11-101-1983, NEQ
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT FERRO-ALLOYS FERROALLOYS FERRONIOBIUM FERROUS ALLOYS GRAVIMETRIC ANALYSIS NIOBIUM TANTALUM TITANIUM CHEMICAL ANALYSIS AND TESTIN