Hydrogen and deuterium profiling at the surface of zirconium alloys: I. The effects of surface preparation Academic Article uri icon

abstract

  • The H (15 N, αγ) 12 C and D (3 He, p) α reactions have been used to measure hydrogen and deuterium profiles in Zr-2.5 wt% Nb alloys loaded to contain 40–150 ppm by weight H or 56–108 ppm D. Excellent agreement is found between the results obtained by these two different techniques. Large surface H (D) peaks are found after fine metallographic sample preparation techniques. The peaks may be substantially reduced by using a fine machining operation (as the last step in surface preparation) or may be totally removed by vacuum annealing. The surface peaks appear to be associated with hydride/deuteride particles embedded in the surface layers during metallographic polishing.

publication date

  • January 1, 1987