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Quantitative measurement of transfer film thickness of PTFE based composites by infrared spectroscopy

  • Yanqi Gu
  • , Zidan Wang
  • , Shiguang Peng
  • , Tianbao Ma*
  • , Jianbin Luo*
  • *Corresponding author for this work
  • Tsinghua University

Research output: Contribution to journalArticlepeer-review

Abstract

A method is proposed for quantitatively characterizing the thickness of transfer films of PTFE/α-alumina composites. The transfer films were produced by pin-on-disk tribotests in rotational mode and linear reciprocating mode. Based on chemical and morphological analysis using Fourier transform infrared spectroscopy and atomic force microscopy, the peak area of the CF2 antisymmetric stretching vibrational absorption peak at 1205 cm−1 was found to be linearly correlated with transfer film thickness which follows the Lambert-Beer Law. With this relationship, a simple, rapid and nondestructive method for measuring the thickness of polymeric transfer films was proposed, which provides a promising approach for an in-depth understanding of the transfer film formation process and the self-lubrication mechanism.

Original languageEnglish
Article number106593
JournalTribology International
Volume153
DOIs
StatePublished - Jan 2021
Externally publishedYes

Keywords

  • Fourier transform infrared spectroscopy
  • PTFE/α-alumina composites
  • Thickness
  • Transfer film

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