Surface interactions and tribochemistry in boundary lubrication of hypereutectic Al-Si alloys. Póster
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URI: http://hdl.handle.net/10317/880Compartir
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Grupo de Ciencia de Materiales e Ingeniería MetalúrgicaÁrea de conocimiento
Ciencia de los Materiales e Ingeniería MetalúrgicaPatrocinadores
We thank MEC (Spain), EU FEDER (MAT2005-00067, MAT2008-01670) and Castrol Technology Center (UK).Fecha de publicación
2008-09Editorial
Universidad de LeedsCita bibliográfica
JIMÉNEZ BALLESTA, Ana Eva et al. Surface interactions and tribochemistry in boundary lubrication of hypereutectic Al-Si alloys. En: Leeds-Lyon Symposium on Tribology (35º: 2007: Leeds, UK) 35th Leeds-Lyon Symposium on Tribology. Trinity and All Saints College, The University of Leeds, UK Tuesday 9th – Friday 12th, September 2008: Duncan Dowson at 80. Leeds, UK: University of Leeds, 2008.Palabras clave
TribofilmTribochemistry
Aleaciones Al-Si
Hierro
Polifosfatos
Resumen
Al-Si alloys are characterized with 3.3.- miniSIMS DEPTH PROFILES
a range of properties which make
them potential materials to
substitute cast iron in automotive
engines. The formation of
polyphosphate films on Al-Si
alloys would indicate the potential
use of ZDDP in lubrication of
these alloys and hence facilitate
their use as replacement materials
for cast iron. It has been shown
that the addition of MoDTC assists
ZDDP to reduce friction and wear
of hypereutectic Al-Si alloys. The
aim of the current work is to fully
characterize these two different
kinds of tribofilms formed on the
Al-Si alloy, showing the different
surface interactions as a function
of the presence of MoDTC in the
tribofilm formation, as well as the
different distribution and
mechanical properties of the
tribofilm.
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