Ion beam studies of hydrogen in metals

Myers, S M; Wampler, W R; Besenbacher, F; Robinson, S L; Moody, N R

Title: Ion beam studies of hydrogen in metals

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Abstract

Methods based on ion implantation and nuclear reaction analysis were used to investigate the behavior of hydrogen isotopes in metals. The binding enthalpy of deuterium (D) at irradiation effects, He bubbles, D/sub 2/ bubbles, and metal-oxide interfaces was measured for Al, Fe, Ni, Cu, Pd, austenitic stainless steel, Inconel, and amorphous Fe/sub 40/Ni/sub 40/P/sub 14/B/sub 6/. The binding enthalpies determined for the pure metals are in excellent agreement with mechanistic calculations based on effective-medium theory and other information. Surface-limited release of D from Fe, stainless steel, and Inconel was measured as a function of temperature and the state of surface oxidation. The release rate was accurately proportional to the square of the D concentration in solution, permitting the results to be expressed in terms of a surface recombination coefficient. This quantity was up to four orders of magnitude greater for an ion-sputtered surface than for a surface with electropolish oxide. The diffusion coefficient and solid solubility of tritium in stainless steel were measured for the first time at the ice point, thereby extending downward by three orders of magnitude the diffusivities available from conventional permeation experiments. Deuterium concentration profiles resulting from electrochemical charging of Incoloy 903 were measured as amore »« less

Authors:: Myers, S M; Wampler, W R; Besenbacher, F; Robinson, S L; Moody, N R

Publication Date:: Sun Jan 01 00:00:00 EST 1984

Research Org.:: Sandia National Labs., Albuquerque, NM (USA); Aarhus Univ. (Denmark). Inst. of Physics; Sandia National Labs., Livermore, CA (USA)

OSTI Identifier:: 6769151

Report Number(s):: SAND-84-1052C; CONF-8409130-1
ON: DE84017422

DOE Contract Number:: AC04-76DP00789

Resource Type:: Conference

Resource Relation:: Conference: International conference on surface modification of metals by ion beams, Heidelberg, F.R. Germany, 17 Sep 1984; Other Information: Portions are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; ALUMINIUM; PERMEABILITY; DEUTERIUM; BINDING ENERGY; INCOLOY ALLOYS; INCONEL ALLOYS; IRON; NICKEL; STAINLESS STEELS; TRITIUM; DIFFUSION; SOLUBILITY; BUBBLES; HELIUM; ION BEAMS; ION IMPLANTATION; NUCLEAR REACTION ANALYSIS; TRAPPING; ALLOYS; BEAMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; CHROMIUM ALLOYS; CORROSION RESISTANT ALLOYS; ELEMENTS; ENERGY; FLUIDS; GASES; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HYDROGEN ISOTOPES; IRON ALLOYS; IRON BASE ALLOYS; ISOTOPES; LIGHT NUCLEI; MATERIALS; METALS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NONMETALS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; RARE GASES; STABLE ISOTOPES; STEELS; TRANSITION ELEMENTS; YEARS LIVING RADIOISOTOPES; 360104* - Metals & Alloys- Physical Properties

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                    Myers, S M, Wampler, W R, Besenbacher, F, Robinson, S L, and Moody, N R. Ion beam studies of hydrogen in metals.  United States: N. p., 1984. 
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                    Myers, S M, Wampler, W R, Besenbacher, F, Robinson, S L, & Moody, N R. Ion beam studies of hydrogen in metals.  United States.

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                    Myers, S M, Wampler, W R, Besenbacher, F, Robinson, S L, and Moody, N R. 1984.  
        "Ion beam studies of hydrogen in metals".  United States.

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@article{osti_6769151,

  title        = {Ion beam studies of hydrogen in metals},

  author       = {Myers, S M and Wampler, W R and Besenbacher, F and Robinson, S L and Moody, N R},

  abstractNote = {Methods based on ion implantation and nuclear reaction analysis were used to investigate the behavior of hydrogen isotopes in metals. The binding enthalpy of deuterium (D) at irradiation effects, He bubbles, D/sub 2/ bubbles, and metal-oxide interfaces was measured for Al, Fe, Ni, Cu, Pd, austenitic stainless steel, Inconel, and amorphous Fe/sub 40/Ni/sub 40/P/sub 14/B/sub 6/. The binding enthalpies determined for the pure metals are in excellent agreement with mechanistic calculations based on effective-medium theory and other information. Surface-limited release of D from Fe, stainless steel, and Inconel was measured as a function of temperature and the state of surface oxidation. The release rate was accurately proportional to the square of the D concentration in solution, permitting the results to be expressed in terms of a surface recombination coefficient. This quantity was up to four orders of magnitude greater for an ion-sputtered surface than for a surface with electropolish oxide. The diffusion coefficient and solid solubility of tritium in stainless steel were measured for the first time at the ice point, thereby extending downward by three orders of magnitude the diffusivities available from conventional permeation experiments. Deuterium concentration profiles resulting from electrochemical charging of Incoloy 903 were measured as a function of charging current, thereby providing a direct, systematic calibration of such charging in an austenitic material where conventional permeation measurements are precluded by the small hydrogen diffusion rate.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6769151},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 1984},

  month        = {Sun Jan 01 00:00:00 EST 1984}

}

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