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

被引：32

作者：

Zuin, Andre ^{[1
,4
]}

Cousseau, Tiago ^{[2
]}

Sinatora, Amilton ^{[1
,3
]}

Toma, Sergio Hiroshi ^{[4
]}

Araki, Koiti ^{[4
]}

Toma, Henrique Eisi ^{[4
]}

机构：

[1] Univ Sao Paulo, Polytech Sch, Dept Mech Engn, Surface Phenomena Lab, Sao Paulo, Brazil

[2] Fed Univ Technol, GrMats Grp Mat Tribol & Surfaces, Parana, Brazil

[3] Inst Tecnol Vale, Av Juscelino Kubitschek,31 Bauxita, BR-35400000 Ouro Preto, Brazil

[4] Univ Sao Paulo, Inst Chem, Lab Supramol Chem & Nanotechnol, Sao Paulo, Brazil

来源：

TRIBOLOGY INTERNATIONAL | 2017年 / 112卷

基金：

巴西圣保罗研究基金会;

关键词：

Magnetite nanoparticles; Nanolubricants; Boundary lubrication; Anti-wear agent; ANTIWEAR; LUBRICANT; BEHAVIOR; CONTACT;

D O I：

10.1016/j.triboint.2017.03.028

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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.

引用

页码：10 / 19

页数：10

共 39 条

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