Surface-modified Pd and Au nanoparticles for anti-wear applications

J. C. Sánchez-López; M. D. Abad; L. Kolodziejczyk; E. Guerrero; A. Fernández

doi:10.1016/j.triboint.2009.12.013

Surface-modified Pd and Au nanoparticles for anti-wear applications

J. C. Sánchez-López
, M. D. Abad
, L. Kolodziejczyk
, E. Guerrero
, A. Fernández

Research output: Indexed journal article › Article › peer-review

74 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	720-726
Number of pages	7
Journal	Tribology International
Volume	44
Issue number	6
DOIs	https://doi.org/10.1016/j.triboint.2009.12.013
Publication status	Published - Jun 2011
Externally published	Yes
Event	Advances in Boundary Lubrication and Boundary Surface Films, Seville, Spain (March 29 - April 3, 2009). - Sevilla, Spain Duration: 1 Jan 2009 → …

Keywords

Additive
Anti-wear
Load-capacity
Nanoparticles

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10.1016/j.triboint.2009.12.013

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title = "Surface-modified Pd and Au nanoparticles for anti-wear applications",

abstract = "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.",

keywords = "Additive, Anti-wear, Load-capacity, Nanoparticles",

author = "S{\'a}nchez-L{\'o}pez, \{J. C.\} and Abad, \{M. D.\} and L. Kolodziejczyk and E. Guerrero and A. Fern{\'a}ndez",

note = "Funding Information: Financial support by the Spanish MICINN (Projects MAT2004-01052, MAT2007-66881-C02-01 and NAN2004-09125-C07-04) and Junta de Andaluc{\'i}a is acknowledged. We also thank I. Rosa and M.C. Jim{\'e}nez de Haro for technical support.; Advances in Boundary Lubrication and Boundary Surface Films, Seville, Spain (March 29 - April 3, 2009). ; Conference date: 01-01-2009",

year = "2011",

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doi = "10.1016/j.triboint.2009.12.013",

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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

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ER -

Surface-modified Pd and Au nanoparticles for anti-wear applications

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Keywords

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