TY - JOUR
T1 - MoS 2 films formed by in-contact decomposition of water-soluble tetraalkylammonium thiomolybdates
AU - Chiñas-Castillo, Fernando
AU - Lara-Romero, Javier
AU - Alonso-Núñez, Gabriel
AU - Barceinas-Sánchez, Juan De Dios Oscar
AU - Jiménez-Sandoval, Sergio
N1 - Funding Information:
Acknowledgments The authors wish to express their sincere thanks to the National Council for Science and Technology (CONACyT— Projects 46871 and 43634) for the financial support to carry out the present work.
PY - 2008/2
Y1 - 2008/2
N2 - Synthesis and tribological evaluation of three tetraalkylammonium thiomolybdate (R 4N) 2MoS 4 (R = methyl, propyl, or ammonia) aqueous-based lubricant additives on a ball-on-disk tribometer was carried out for a steel-aluminum contact. Tests were performed at the same conditions of load, entrainment speed, sliding distance, temperature, and concentration of MoS 2 to compare the activity (lubrication effect) of the thiomolybdates prepared. A friction reduction is observed for the three salts compared to pure water; however, significant differences in friction coefficient are observed depending on the alkyl group. SEM/EDAX and Raman analysis of the wear tracks reveal the in-contact formation of a MoS 2-lubricating film, rich in molybdenum and sulfur.
AB - Synthesis and tribological evaluation of three tetraalkylammonium thiomolybdate (R 4N) 2MoS 4 (R = methyl, propyl, or ammonia) aqueous-based lubricant additives on a ball-on-disk tribometer was carried out for a steel-aluminum contact. Tests were performed at the same conditions of load, entrainment speed, sliding distance, temperature, and concentration of MoS 2 to compare the activity (lubrication effect) of the thiomolybdates prepared. A friction reduction is observed for the three salts compared to pure water; however, significant differences in friction coefficient are observed depending on the alkyl group. SEM/EDAX and Raman analysis of the wear tracks reveal the in-contact formation of a MoS 2-lubricating film, rich in molybdenum and sulfur.
KW - Additive
KW - Film forming
KW - Friction
KW - Tribological
KW - Water-soluble
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=38349022146&partnerID=8YFLogxK
U2 - 10.1007/s11249-007-9292-z
DO - 10.1007/s11249-007-9292-z
M3 - Artículo
SN - 1023-8883
VL - 29
SP - 155
EP - 161
JO - Tribology Letters
JF - Tribology Letters
IS - 2
ER -