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Pondicherry, Kartik S.
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article
Tribological functionality of aluminium sliding materials with hard phases under lubricated conditions
Abstract
<p>This paper describes the tribological functionality of hypereutectic AlSi under conformal contact conditions. Temperature and load bearing tests were performed with a ring-on-disc configuration with steel counterparts under fully formulated engine oil. Tribometric tests show significantly higher wear resistance and loadability of AlSi compared to pure Al. Post test surface characterization by light and electron microscopy revealed the load bearing functionality of the Si hard phases. Selective formation of protective tribofilms was observed exclusively on these Si particles and on the corresponding steel counterpart. This formation requires sufficient energy input and only takes place under harsh contact conditions.</p>