Quantitative characterization of the transfer film morphology of SiO2/PTFE composite

Zhang, Longxiao; Xie, Ting; Chen, Kun; Li, Chen; Wen, Heng; Shi, Yaru; Zhang, Junlong

doi:10.1016/j.wear.2021.204047

Cited by 11 publications

(7 citation statements)

References 35 publications

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“…The tribological behaviors of the PTFE composites filled with three commonly used fillers (ZnO, SiO 2 and TiO 2 ; their filling content was 20 Wt.% respectively) were studied (Li et al , 2001; Zhang et al , 2021; Fan et al , 2020; Shi et al , 2011). The fillers were spherical particles with an average diameter of about 5 μm.…”

Section: Methodsmentioning

confidence: 99%

“…Previous energy dispersive spectrometer analysis showed that PTFE composite formed a stable transfer film on the counterface (Zhang et al , 2021). The 3D laser scanning microscope (VK-250, Japan) was used to observe the transfer film.…”

Section: Methodsmentioning

confidence: 99%

“…Previous studies have pointed out that there was a good correlation between the maximum thickness of transfer film and the wear of PTFE composites (Burris and Sawyer, 2005;Zhang et al, 2021). The maximum number of the transfer film layers in each of the 24 positions of view was counted, and taken the mode among them to define the effective layer.…”

Section: Calculation Of the Coverage Rate Of The Transfer Film Effect...mentioning

confidence: 99%

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Effect of the geometric parameter difference of multilayer structural transfer film on the wear of PTFE-based composites

Zhang

Xie²

2022

ILT

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Purpose The purpose of this paper is to explore the geometric parameter difference of the terrace-like structural transfer film under different working parameters [pressure and velocity (PV) values] and filled particle types (three fillers: SiO2, TiO2 and ZnO), and find the geometric parameter related to the wear of polytetrafluoroethylene (PTFE)-based composites. Design/methodology/approach PTFE composites were filled with SiO2, TiO2 and ZnO particles, and the morphology parameter of the PTFE composite transfer film under different PV values obtained from the rotary reciprocating pin-on-disk frictional tester was quantified by using a three-dimensional laser scanning microscope. Findings The results showed that the effective layer coverage rate and effective thickness of the transfer film had a good relationship with the wear of the three PTFE composites. On the whole, increasing the speed or load was helpful to increase the effective thickness of the three PTFE composite transfer films, but reduced the effective layer coverage rate. The greater the effective layer coverage rate and effective thickness of the transfer film, the better the wear resistance of the PTFE composites in the entire speed and load range. Originality/value This work will promote further understanding of the transfer film and lay a foundation for realizing its morphology regulation and improving the wear of the PTFE composites.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Calculation Of the Coverage Rate Of The Transfer Film Effect...mentioning

confidence: 99%

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Effect of the geometric parameter difference of multilayer structural transfer film on the wear of PTFE-based composites

Zhang

Xie²

2022

ILT

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“…The fluorine chemical industry has special status in the modern chemical industry because its products are the starting point of the high-technology industry. Inorganic fluorine chemical products such as NaF, MgF 2 , and AlF 3 can be used in metallurgy, aerospace, nuclear energy, solar energy, and other fields. − Organic materials produced using organic fluorine chemicals, such as PTFE, can be used in aerospace, military, medical, and other industries. − …”

Section: Introductionmentioning

confidence: 99%

Flotation Behavior and Adsorption Mechanism of Phenylpropyl Hydroxamic Acid As Collector Agent in Separation of Fluorite from Calcite

Mao

Xie

et al. 2023

Langmuir

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The hydroxylamine method involves the synthesis of a new hydroxamic acid collector, i.e., phenylpropyl hydroxamic acid (PHA), from methyl cinnamic hydroxamic acid. Flotation test results show that PHA exhibits good selective collection ability. The adsorption mechanism of PHA is investigated using the zeta potential, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The results show that PHA formed a new Ca–O bond with Ca2+ on the fluorite surface via chemical adsorption. A new five-element chelated hydroxamate group may have formed in Ca on the fluorite surface. The PHA selectivity is fully explained via density functional theory (DFT) calculations, and an adsorption model is established.

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“…Gu et al [ 24 ] proposed a method for the quantitative testing of transfer films based on infrared transmission techniques and concluded that the thickness of the transfer film shows a linear relationship with the area of the infrared absorption peak of the transfer film at 1205 cm −1 . Zhang et al [ 25 ] used statistical methods to observe the characteristic values of different thicknesses of SiO 2 /PTFE composite transfer films and concluded that there is a strong correlation between the maximum thickness value of the transfer film and the wear rate of the material, with the wear rate decreasing as the maximum thickness of the transfer film increases.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Measurement of Morphological Characteristics of PTFE Composite Transfer Films Based on Computer Graphics

Sun

Wang

et al. 2023

Materials

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In this paper, the tribological properties of polytetrafluoroethylene (PTFE) composites filled with Nano-ZrO2 and polyetheretherketone (PEEK) particles were tested for sliding friction against a counterpart metal (ASTM 1045 steel) using a linear reciprocating friction and wear experimental machine. Data on tribological performance and optical images of the transfer film were obtained at various friction stages for the material. MATLAB software was employed to develop quantitative analysis procedures for the morphological characteristics of the transfer film. The program enables image enhancement and morphological processing of transfer film images, then identifies, extracts, and quantifies the geometric and textural properties of the transfer film as a foundation for analyzing the variation of the characteristics and their relationship to the tribological properties of the material. The results demonstrated that the geometric, morphological, and textural characteristics of the transfer film were dynamically developing during the friction process, with noticeable differences between various friction stages and a significant impact on the tribological properties of the material. Quantitative analysis revealed a good correlation between the trends of some morphological and textural characteristics (the coverage, area, diameter, roundness, consistency, and texture entropy) of the transfer film and the wear resistance of the PTFE composite. Therefore, these morphological and textural characteristics can thus be used to quantify the transfer film quality and utilized as an indirect indicator of the tribological properties of the material.

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Quantitative characterization of the transfer film morphology of SiO2/PTFE composite

Cited by 11 publications

References 35 publications

Effect of the geometric parameter difference of multilayer structural transfer film on the wear of PTFE-based composites

Effect of the geometric parameter difference of multilayer structural transfer film on the wear of PTFE-based composites

Flotation Behavior and Adsorption Mechanism of Phenylpropyl Hydroxamic Acid As Collector Agent in Separation of Fluorite from Calcite

Quantitative Measurement of Morphological Characteristics of PTFE Composite Transfer Films Based on Computer Graphics

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