High-power air plasma diagnostics by optical emission spectroscopy for subsecond continuous carbon fibre surface modification

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-03-20 DOI:10.1016/j.compositesa.2025.108855

Maximilian Pitto , Holger Fiedler , Tom Allen , Casparus Johannes Reinhard Verbeek , Simon Bickerton

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引用次数: 0

Abstract

This paper aims to elucidate the interplay between surface heating, plasma emission, and treatment time in a subsecond continuous unsized CF plasma surface oxidation process. Optical emission spectroscopy, high-speed imaging, infrared thermography, scanning electron microscopy, and X-ray photoelectron spectroscopy were utilised to characterise the plasma species, discharge mode, CF surface temperature, morphology, and functionality, respectively. It was shown that plasma transition from diffuse to filamentary discharge for a nozzle in close proximity to CF changes the surface modification trend. Specifically, increased treatment time was needed for O/C composition enhancement in the filamentary discharge, potentially resulting from elevated treatment heterogeneity. The diffuse discharge achieved a maximum O/C for the minimum residence time of

0.41

s. The transitional discharge mode with the maximum O emission intensity produced the overall maximum O/C enhancement of 57% in

0.61

s with a non-monotonic temporal trend. It was revealed that for diffuse and transitional plasma,

surface content is explained well by the maximum

luminescence emission intensity divided by treatment time, enabling the use of

emission as an indicator for atmospheric pressure air plasma reactivity. While high temperatures, exceeding 650 °C for filamentary plasma, can influence the oxidation rate, only energetic and highly concentrated oxidative plasma species such as O, O₃,

can realise the subsecond functionalisation. Overall, this work shows that characterising the discharge mode and measuring the plasma species using readily available tools provides valuable information to commission plasma sources for fibre functionalisation.

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.