Depth distribution of 2-keV helium-ion irradiation-induced cavities in nickel

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6436104

Fenske, G; Das, S K; Kaminsky, M

Transmission electron microscopy has been used to study the effect of total dose on the depth distribution of cavities (voids or bubbles) in nickel irradiated at 500/sup 0/C with 20-keV /sup 4/He/sup +/ ions. A transverse sectioning technique allowed us to obtain the entire depth distribution of cavities from a single specimen. The diameter, number density and volume fraction of cavities were measured as a function of depth from micrographs taken from samples sectioned parallel to the direction of the incident beam. Results for the doses at 2.9 x 10/sup 15/ and 2.9 x 10/sup 16/ ions/cm/sup 2/ show an increase in the average cavity diameter, number density and volume fraction with increasing dose. A further increase in dose from 2.9 x 10/sup 16/ to 2.9 x 10/sup 17/ ions/cm/sup 2/ also shows an increase in the average cavity diameter but a decrease in the number density. This observation is interpreted as evidence for the coalescence of cavities. 3 figures, 1 table.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6436104
• Report Number(s): CONF-810831-99; ON: DE83007654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
BUBBLES
DEPTH DOSE DISTRIBUTIONS
ELECTRON MICROSCOPY
ELEMENTS
ENERGY RANGE
HIGH TEMPERATURE
KEV RANGE
KEV RANGE 10-100
METALS
MICROSCOPY
NICKEL
PHYSICAL RADIATION EFFECTS
RADIATION DOSE DISTRIBUTIONS
RADIATION EFFECTS
SPATIAL DOSE DISTRIBUTIONS
TRANSITION ELEMENTS
TRANSMISSION ELECTRON MICROSCOPY
VOIDS