Hydrogen and deuterium internal friction behavior in vanadium-niobium alloys

Technical Report · Fri Jul 01 00:00:00 EDT 1988

OSTI ID:6507590

Kim, Seon Jin

Internal friction behavior of hydrogen in vanadium-niobium alloys containing from 40 at. pct. niobium to 100 at. pct. niobium as a function of hydrogen concentrations was investigated. The internal friction measurements were performed in an electrostatic drive and detection apparatus for rods in flexural vibration in the temperature range from 30/degree/K to 290/degree/K. An internal friction peak due to hydrogen was found in all the vanadium-niobium alloys. The peak was considered to be due to the jumps of hydrogen atoms in solid solution. The peak moved toward lower temperatures with increasing hydrogen concentration. In other words, the activation energies of the hydrogen motion responsible for the internal friction peaks decreased with increasing hydrogen concentration. The activation energies and /tau//sub 0/ values for the hydrogen internal friction processes obtained from the present study were compared to those obtained from long range diffusion experiments. In order to examine the isotope effect, internal friction of deuterium in the same alloys were measured and compared to those of hydrogen. Effects of oxygen on the internal friction behavior of hydrogen and deuterium were also investigated. 45 refs., 23 figs., 9 tabs.

• Research Organization: Ames Lab., IA (USA)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6507590
• Report Number(s): IS-T-1296; ON: DE89007616
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTIVATION ENERGY
ALLOYS
CHEMICAL ANALYSIS
CRYSTAL STRUCTURE
DEUTERIUM
DIFFUSION
ELEMENTS
EMBRITTLEMENT
ENERGY
FRICTION
HYDROGEN
HYDROGEN EMBRITTLEMENT
HYDROGEN ISOTOPES
HYDROGEN STORAGE
INTERNAL FRICTION
ISOTOPE EFFECTS
ISOTOPES
LIGHT NUCLEI
NIOBIUM ALLOYS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN
STABLE ISOTOPES
STORAGE
VANADIUM ALLOYS