Сплавы никелевые. Определение содержания ниобия и тантала. Метод ионного обмена
Название (англ.):
Nickel alloys; determination of niobium and tantalum; ion exchange method
Описание (англ.):
The method is based on passing a solution of the sample in a hydrochloric-hydrofluoric acid mixture through an ion exchange column, removal of all elements other than niobium and tantalum by washing, separation of niobium and tantalum from the resin bed, gravimetric determination of the eluted niobium and tantalum as the pentoxides, if present at high levels. Otherwise coprecipitation with zirconium as cupferrates is used. The elements normallyfound in nickel alloys do not interfere.
Дата регистрации:
01.01.93
Дата введения:
01.12.92
Код КГС:
В59
Код ОКСТУ:
1732
Код ОКС(МКС):
77.120.40
Код ОКП:
1732
Нормативные ссылки:
ISO 385-1-1984*ISO 648-1977*ISO 1042-1983
Ключевые слова:
CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT ION EXCHANGES NICKEL ALLOYS NIOBIUM TANTALUM CHEMICAL ANALYSIS AND TESTIN