Article

Metallurgical and Materials Transactions A

, Volume 27, Issue 11, pp 3682-3687

Determination of hydrogen in titanium alloys by cold neutron prompt gamma activation analysis

  • Rick L. PaulAffiliated withthe Analytical Chemistry Division, National Institute of Standards and Technology
  • , Richard M. LindstromAffiliated withthe Analytical Chemistry Division, National Institute of Standards and Technology
  • , Robert R. GreenbergAffiliated withthe Analytical Chemistry Division, National Institute of Standards and Technology
  • , Hugh M. PrivettIIIAffiliated withPratt and Whitney
  • , Wade J. RichardsAffiliated withthe Nuclear Section

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Abstract

Cold neutron prompt gamma-ray activation analysis (CNPGAA) has proven useful for the analysis of hydrogen in titanium alloys. The analysis is nondestructive, measures the entire sample, and the results are independent of the chemical form of hydrogen present. We have used the technique to measure H mass fractions as low as 50 mg/kg in titanium-alloy jet-engine compressor blades and to measure hydrogen in standards for neutron tomography.