The generation of dislocations in metals by low energy ion bombardment

Journal Article · Sat Jun 01 04:00:00 EDT 1963 · Philosophical Magazine

DOI:https://doi.org/10.1080/14786436308214453· OSTI ID:4695975

Bowden, Piers; Brandon, D. G.

Thin foils of gold, copper, and nickel were bombarded on one surface with a beam of 100 ev argon ions at normal incidence. Glissile and Frank-sessile dislocation loops and dislocation dipoles were formed close beneath the bombarded surface, and both the type of loop and their arrangement were found to depend critically on the crystallographic orientation of the surface. The results are interpreted in terms of the stability of different dislocation arrangements near free surfaces of differing orientation. The condition for the stability of both glissile and sessile loops in gold is that their Burgers vectors should lie within approximately 5 deg of the plane of the surface. Only glissile loops were observed in copper. Sessile loops were more numerous in nickel than in gold. (auth)

• Research Organization: Cambridge Univ., Eng.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-027920
• OSTI ID: 4695975
• Journal Information: Philosophical Magazine, Journal Name: Philosophical Magazine Journal Issue: 90 Vol. 8; ISSN 0031-8086
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ARGON
BURGERS VECTOR
COPPER
DEFECTS
DISLOCATIONS
GOLD
IONS
IRRADIATION
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
NICKEL
RADIATION EFFECTS
SLIP
STABILITY
SURFACES
VECTORS