Environmental dependence of ultra-low wear behavior of polytetrafluoroethylene (PTFE) and alumina composites suggests tribochemical mechanisms

被引：136

作者：

Krick, Brandon A. ^{[1
]}

Ewin, Jeffrey J. ^{[1
]}

Blackman, Gregory S. ^{[2
]}

Junk, Christopher P. ^{[3
]}

Sawyer, W. Gregory ^{[1
]}

机构：

[1] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA

[2] DuPont Nanocomposite Technol, Wilmington, DE 19803 USA

[3] DuPont Cent Res & Dev, Wilmington, DE 19803 USA

来源：

TRIBOLOGY INTERNATIONAL | 2012年 / 51卷

关键词：

Polytetrafluoroethylene; Wear; Tribochemistry; Environment; TRIBOLOGICAL BEHAVIOR; FILLED POLYTETRAFLUOROETHYLENE; UNCERTAINTY ANALYSIS; FRICTION; NANOCOMPOSITES; RESISTANCE; NANOPARTICLES;

D O I：

10.1016/j.triboint.2012.02.015

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Composites of polytetrafluoroethylene (PTFE) and alpha phase alumina produce wear rates that can be nearly five orders of magnitude less than the wear rates of virgin PTFE. The mechanism for this reduction in wear cannot be explained solely by mechanical effects. The influences of oxygen and humidity on the tribological performance of both unfilled PTFE and FIFE/alumina composites were studied. The wear rate of PTFE/alumina composites is dependent on the humidity of the environment; this dependence suggests a tribochemical mechanism is responsible for the ultra-low wear behavior of these PTFE/alumina composites. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：42 / 46

页数：5

共 34 条

[1] THE WEAR OF FILLED POLYTETRAFLUOROETHYLENE [J].

BAHADUR, S ;

TABOR, D .

WEAR, 1984, 98 (1-3) :1-13

[2] SLIDING WEAR MECHANISM OF POLYTETRAFLUOROETHYLENE (PTFE) AND PTFE COMPOSITES [J].

BLANCHET, TA ;

KENNEDY, FE .

WEAR, 1992, 153 (01) :229-243

[3] Coupled Effect of Filler Content and Countersurface Roughness on PTFE Nanocomposite Wear Resistance [J].

Blanchet, Thierry A. ;

Kandanur, Sashi S. ;

Schadler, Linda S. .

TRIBOLOGY LETTERS, 2010, 40 (01) :11-21

[4] A route to wear resistant PTFE via trace loadings of functionalized nanofillers [J].

Burris, D. L. ;

Zhao, S. ;

Duncan, R. ;

Lowitz, J. ;

Perry, S. S. ;

Schadler, L. S. ;

Sawyer, W. G. .

WEAR, 2009, 267 (1-4) :653-660

[5]

Burris DL, 2008, TRIBOL LUBR TECHNOL, V64, P40

[6] Tribological behavior of PEEK components with compositionally graded PEEK/PTFE surfaces [J].

Burris, David L. ;

Sawyer, W. Gregory .

WEAR, 2007, 262 (1-2) :220-224

[7]

Burris DL, 2009, TRIBOL LETT, V36, P81, DOI [10.1007/s11249-009-9478, 10.1007/s11249-009-9477-8]

[8] Improved wear resistance in alumina-PTFE nanocomposites with irregular shaped nanoparticles [J].

Burris, DL ;

Sawyer, WG .

WEAR, 2006, 260 (7-8) :915-918

[9] Tribological sensitivity of PTFE/alumina nanocomposites to a range of traditional surface finishes [J].

Burris, DL ;

Sawyer, WG .

TRIBOLOGY TRANSACTIONS, 2005, 48 (02) :147-153

[10]

Burris DL, 2007, EFFECTS NANOPARTICLE, P200

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