PROPERTIES OF OXIDE LAYER AL2O3 FABRICATED BY A PULSED ANODIZIG METHOD
Journal Title: Tribologia - Year 2011, Vol 240, Issue 6
Abstract
The paper presents the tribological properties of oxide layers Al2O3 obtained on the EN AW-5251 aluminium alloy via a pulsed anodizing method in multi-component electrolyte. The anodizing process was conducted using a rectangular current waveform of variable frequency (0,02÷200 Hz) and a variable duty cycle of the pulse (40÷100%). Tribological tests were conducted in a pin-on-flate surface couple in reciprocating motion at the T-17 research stand simulating the conditions of cylinder/sealing contact of lubricant-free pneumatic servo-motors. The research results prove that application of the pulse method with a rectangular current waveform for hard anodization of aluminium alloys allows us to modify the tribological properties of anodic hard coatings.
Authors and Affiliations
Tomasz Kmita
Keywords
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