Friction of Teflon-S-coated Ti-6Al-4V under conditions of oscillatory relative motion

D.J. Ligterink; Gijsbertus Jacob Verkerke; A.W.J. de Gee

doi:10.1016/0301-679X(90)90008-D

Friction of Teflon-S-coated Ti-6Al-4V under conditions of oscillatory relative motion

D.J. Ligterink, Gijsbertus Jacob Verkerke, A.W.J. de Gee

Faculty of Engineering Technology

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Abstract

An extendable prosthesis for implantation in a human leg has been developed. The friction forces during extension of the prosthesis must be low, so a coating of Teflon-S was applied to the sliding surfaces. During walking, damage can occur as a result of oscillatory relative motion. Therefore experiments were performed with an apparatus which simulated this type of motion. It was found that the coefficient of friction reached a maximum value within one million movement cycles. This maximum value of the coefficient of friction increased with decreasing coating thickness. Even at an initial coating thickness of less than 1 μm, coating with Teflon-S was found to be very effective in reducing friction.

Original language	Undefined
Pages (from-to)	346-350
Journal	Tribology international
Volume	23
Issue number	5
DOIs	https://doi.org/10.1016/0301-679X(90)90008-D
Publication status	Published - 1990

Keywords

friction coefficient
extendable prosthesis
Teflon-S
Oscillatory relative motion
IR-70608

Access to Document

10.1016/0301-679X(90)90008-D

Ligterink90friction
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Cite this

@article{8d0d13d09e57403981130bc44abf6242,

title = "Friction of Teflon-S-coated Ti-6Al-4V under conditions of oscillatory relative motion",

abstract = "An extendable prosthesis for implantation in a human leg has been developed. The friction forces during extension of the prosthesis must be low, so a coating of Teflon-S was applied to the sliding surfaces. During walking, damage can occur as a result of oscillatory relative motion. Therefore experiments were performed with an apparatus which simulated this type of motion. It was found that the coefficient of friction reached a maximum value within one million movement cycles. This maximum value of the coefficient of friction increased with decreasing coating thickness. Even at an initial coating thickness of less than 1 μm, coating with Teflon-S was found to be very effective in reducing friction.",

keywords = "friction coefficient, extendable prosthesis, Teflon-S, Oscillatory relative motion, IR-70608",

author = "D.J. Ligterink and Verkerke, {Gijsbertus Jacob} and {de Gee}, A.W.J.",

year = "1990",

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journal = "Tribology international",

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T1 - Friction of Teflon-S-coated Ti-6Al-4V under conditions of oscillatory relative motion

AU - Ligterink, D.J.

AU - Verkerke, Gijsbertus Jacob

AU - de Gee, A.W.J.

PY - 1990

Y1 - 1990

N2 - An extendable prosthesis for implantation in a human leg has been developed. The friction forces during extension of the prosthesis must be low, so a coating of Teflon-S was applied to the sliding surfaces. During walking, damage can occur as a result of oscillatory relative motion. Therefore experiments were performed with an apparatus which simulated this type of motion. It was found that the coefficient of friction reached a maximum value within one million movement cycles. This maximum value of the coefficient of friction increased with decreasing coating thickness. Even at an initial coating thickness of less than 1 μm, coating with Teflon-S was found to be very effective in reducing friction.

AB - An extendable prosthesis for implantation in a human leg has been developed. The friction forces during extension of the prosthesis must be low, so a coating of Teflon-S was applied to the sliding surfaces. During walking, damage can occur as a result of oscillatory relative motion. Therefore experiments were performed with an apparatus which simulated this type of motion. It was found that the coefficient of friction reached a maximum value within one million movement cycles. This maximum value of the coefficient of friction increased with decreasing coating thickness. Even at an initial coating thickness of less than 1 μm, coating with Teflon-S was found to be very effective in reducing friction.

KW - friction coefficient

KW - extendable prosthesis

KW - Teflon-S

KW - Oscillatory relative motion

KW - IR-70608

U2 - 10.1016/0301-679X(90)90008-D

DO - 10.1016/0301-679X(90)90008-D

M3 - Article

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SP - 346

EP - 350

JO - Tribology international

JF - Tribology international

SN - 0301-679X

IS - 5

ER -