Status : Published (Under review)

This standard was last reviewed and confirmed in 2020. Therefore this version remains current.
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Abstract

The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, decomposing resistant boron compounds (e.g. boron nitrides) by fuming the sample solution with phosphoric and sulfuric acids at not less than 290 °C, forming the boron curcumin complex in a buffered acetic acid and sulfuric acid medium, and measuring the absorbance of the test solution in a molecular absorption spectrometer at 543 nm. Applies to nickel and nickel alloys having a total boron content in the range of 4 g/t to 240 g/t.

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General information

  • Status
     : Published
    Publication date
     : 1993-08
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 8
  • Technical Committee :
    ISO/TC 155
    ICS :
    77.120.40 
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