Norm

ISO/TR 11434:1992 en

Nickel alloys - Determination of niobium and tantalum - Ion exchange method

  • Deze norm is ingetrokken sinds 24-12-2013

48,19

Over deze norm

Status Ingetrokken
Aantal pagina's 7
Commissie Metalen algemeen
Gepubliceerd op 25-11-1992
Taal Engels
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 normally found in nickel alloys do not interfere.

Details

ICS-code 77.120.40
Nederlandse titel Nickel alloys - Determination of niobium and tantalum - Ion exchange method
Engelse titel Nickel alloys - Determination of niobium and tantalum - Ion exchange method

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