TY - JOUR
T1 - Surface-modified Pd and Au nanoparticles for anti-wear applications
AU - Sánchez-López, J. C.
AU - Abad, M. D.
AU - Kolodziejczyk, L.
AU - Guerrero, E.
AU - Fernández, A.
N1 - Funding Information:
Financial support by the Spanish MICINN (Projects MAT2004-01052, MAT2007-66881-C02-01 and NAN2004-09125-C07-04) and Junta de Andalucía is acknowledged. We also thank I. Rosa and M.C. Jiménez de Haro for technical support.
PY - 2011/6
Y1 - 2011/6
N2 - This work reports the employment of metallic nanoparticles (palladium and gold) with a mean particle size of 2.2 nm surface-protected with tetraalkylammonium and alkanethiolate chains, respectively, as lubricant additives. Dispersions of both types of nanoparticles (5 wt%) are prepared using tetrabutylammonium acetate (TBA) and paraffin as base oils, respectively. The tribological properties are then evaluated by a ball-on-disc tribometer at two different loads (7 and 15 N) with excellent results: friction (<0.1), wear rate (∼10-10 mm3/Nm). The excellent anti-wear response is explained by the formation of a metal-containing transfer film and their action as counterface spacers avoiding direct contact.
AB - This work reports the employment of metallic nanoparticles (palladium and gold) with a mean particle size of 2.2 nm surface-protected with tetraalkylammonium and alkanethiolate chains, respectively, as lubricant additives. Dispersions of both types of nanoparticles (5 wt%) are prepared using tetrabutylammonium acetate (TBA) and paraffin as base oils, respectively. The tribological properties are then evaluated by a ball-on-disc tribometer at two different loads (7 and 15 N) with excellent results: friction (<0.1), wear rate (∼10-10 mm3/Nm). The excellent anti-wear response is explained by the formation of a metal-containing transfer film and their action as counterface spacers avoiding direct contact.
KW - Additive
KW - Anti-wear
KW - Load-capacity
KW - Nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=79953884132&partnerID=8YFLogxK
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_univeritat_ramon_llull&SrcAuth=WosAPI&KeyUT=WOS:000291139800007&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1016/j.triboint.2009.12.013
DO - 10.1016/j.triboint.2009.12.013
M3 - Article
AN - SCOPUS:79953884132
SN - 0301-679X
VL - 44
SP - 720
EP - 726
JO - Tribology International
JF - Tribology International
IS - 6
T2 - Advances in Boundary Lubrication and Boundary Surface Films, Seville, Spain (March 29 - April 3, 2009).
Y2 - 1 January 2009
ER -