THE REBINDER EFFECT AND THE ADSORPTION-LOCKING OF DISLOCATIONS IN LITHIUM FLUORIDE

Journal Article · Sun Apr 01 04:00:00 EST 1962 · Phil. Mag.

DOI:https://doi.org/10.1080/14786436208212629· OSTI ID:4839213

Westwood, A R.C.

Aqueous solutions of long-chain fatty acids can serve as etchants for lithium fluoride. Using such etchants it was possible to study the effects of various environments on the cross-gliding of screw dislocations at the surface of a crystal. The observations suggest that chemisorbed polar molecules restrict the motion of screw dislocations via adsorption-locking. An estimate of the possible strength of such locking is made and its existence confirmed by studies on the yielding behavior of lithium fluoride crystals. In con trast to Rebinder's observations with metal crystals, adsorbed polar molecules cause an increase in yield and critical resolved shear stresses before inducing the lower rate of work-hardening commonly known as the Rebinder effect. (auth)

• Research Organization: Research Inst. for Advanced Studies, Baltimore
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-020437
• OSTI ID: 4839213
• Journal Information: Phil. Mag., Journal Name: Phil. Mag. Vol. Vol: (8), 7
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ADSORPTION
CHEMISTRY
CRYSTALS
DEFECTS
DISLOCATIONS
ETCHING
LITHIUM FLUORIDES
ORGANIC ACIDS
SOLUTIONS
STRESSES
SURFACES
WATER