Tribological properties of liquid crystals as lubricant additives

被引：45

作者：

Bermudez, MD ^{[1
]}

Martinez-Nicolas, G ^{[1
]}

Carrion-Vilches, FJ ^{[1
]}

机构：

[1] Univ Murcia, Escuela Tecn Super Ingn Ind, Dept Ingn Mat & Fabricac, Grp Ciencia Mat & Ingn Met, Cartagena 30203, Spain

来源：

WEAR | 1997年 / 212卷 / 02期

关键词：

additives; liquid crystals; tribological properties; pin-on-disk; steel-aluminum lubricated wear;

D O I：

10.1016/S0043-1648(97)00152-X

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Several families of liquid crystals, 4,4'-dialkyl- and dialkoxyazobenzenes, 4,4'-diakylazoxybenzenes and cyanoaryls, have been studied as commercial oils additives, Tribological studies have been carried out on a real time pin-on-disk machine at variable temperature and concentration. Variations in viscosity and transition temperatures have no significant effect on friction values. Friction values for increasing concentration solutions of Liquid crystals in base oil are very similar. A 1% weight addition of liquid crystals to two different base oils lowers friction coefficients of steel for all 14 liquid crystals studied, Wear rates of steel-steel and steel-aluminum contacts are significantly lowered by addition of liquid crystals to base oil. (C) 1997 Elsevier Science S.A.

引用

页码：188 / 194

页数：7

共 15 条

[1]

BARRADO I, 1997, J SUPERCRIT FLUIDS S

[2]

Biresaw G., 1990, ACS S SERIES, V441

[3] LUBRICATION BY A SMECTIC LIQUID-CRYSTAL [J].

FISCHER, TE ;

BHATTACHARYA, S ;

SALHER, R ;

LAUER, JL ;

AHN, YJ .

TRIBOLOGY TRANSACTIONS, 1988, 31 (04) :442-448

[4]

KELLER P, 1978, SOLID STATE PHYS S, V14, P19

[5] THE EFFECT OF LIQUID-CRYSTALS ON JOINT LUBRICATION [J].

KUPCHINOV, BI ;

ERMAKOV, SF ;

RODNENKOV, VG ;

BOBRYSHEVA, SN ;

BELOENKO, ED .

WEAR, 1994, 171 (1-2) :7-12

[6] A STUDY OF LUBRICATION BY LIQUID-CRYSTALS [J].

KUPCHINOV, BI ;

RODNENKOV, VG ;

ERMAKOV, SF ;

PARKALOV, VP .

TRIBOLOGY INTERNATIONAL, 1991, 24 (01) :25-28

[7]

LOCKWOOD FE, 1987, ASLE TRANS, V30, P539

[8] Relationship between tribological performance of liquid crystals and their molecular structure [J].

Mori, S ;

Iwata, H .

TRIBOLOGY INTERNATIONAL, 1996, 29 (01) :35-39

[9]

PIERLARTZIK H, 1992, Patent No. 5084549

[10] Novel colloidal interactions in anisotropic fluids [J].

Poulin, P ;

Stark, H ;

Lubensky, TC ;

Weitz, DA .

SCIENCE, 1997, 275 (5307) :1770-1773

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