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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Lipophilic magnetite nanoparticles coated with stearic acid: A potential agent for friction and wear reduction

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Zuin, Andre ; Cousseau, Tiago ; Sinatora, Amilton ; Toma, Sergio Hiroshi ; Araki, Koiti ; Toma, Henrique Eisi
Total Authors: 6
Document type: Journal article
Source: TRIBOLOGY INTERNATIONAL; v. 112, p. 10-19, AUG 2017.
Web of Science Citations: 8

Lipophilic magnetite nanoparticles (MagNP; d approximate to 10 nm) functionalized with stearic acid were synthetized and tested as additive in polyalphaolefin synthetic base oil (PAO8) in a model system. The thermal properties of the starting base oil and of the base oil mixed with nanoparticles were evaluated using TG/DTA under inert and oxidizing atmosphere. The frictional response of the lubricants was evaluated under a broad range of operating conditions at the boundary lubrication regime using a 10 mm AISI 52,100 bearing steel ball against the flat face of an AISI H13 steel disc. The results showed that: i) MagNP improved the thermal stability of the base oil; ii) reduced the friction values, mostly during load step transition; iii) reduced significantly the wear marks. (AU)

FAPESP's process: 13/19145-9 - Effect of addition of magnetite nanoparticles on the friction and wear in lubricated tests that simulate the system ring-cylinder in flex-fuel type engine
Grantee:Andre Zuin
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 09/54891-8 - Tribological challenges in flex-fuel engines
Grantee:Roberto Martins de Souza
Support type: Program for Research on Bioenergy (BIOEN) - Research Partnership for Technological Innovation (PITE)