在大气压下空气中发生纳秒漫射和火花放电时炭黑的点燃情况

Surfaces Pub Date : 2024-01-10 DOI:10.3390/surfaces7010004
Mikhail Lomaev, V. Tarasenko, Dmitry Sorokin, D. Beloplotov
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引用次数: 0

摘要

目前,许多科研团队正在研究纳秒漫射放电产生的等离子体对各种材料表面的影响,以改变它们的特性。为此,需要均匀的等离子体作用于被处理的目标,而目标通常是放电系统中的电极。在此之前,通过在点对平面间隙中施加碳黑层,研究了在纳秒放电过程中平面电极表面处理的均匀性,并确定了一种放电模式,在这种模式下,处理过的电极不会受到侵蚀。这项研究证实,在非均匀电场的大气压力下,在空气中进行纳秒放电时,沉积在平面阳极表面的炭黑会被点燃。研究确定了在纳秒放电过程中炭黑点燃的条件和动态。研究发现,炭黑在表面被点燃后,会以火焰羽流的形式在间隙中继续燃烧数十毫秒。研究还发现,炭黑的燃烧可在扩散放电和火花放电中发生。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ignition of Carbon Black during Nanosecond Diffuse and Spark Discharges in Air at Atmospheric Pressure
Many scientific teams are currently studying the effects of plasma generated by nanosecond diffuse discharges on the surfaces of various materials in order to modify their properties. To achieve this, uniform plasma is required to act on the target being treated, which is often an electrode in a discharge system. Previously, the surface treatment uniformity of flat electrodes during a nanosecond discharge in a point-to-plane gap was studied by applying a carbon black layer, and a discharge mode was identified in which there was no erosion on the treated electrode. In this study, it was established that during a nanosecond discharge in air at atmospheric pressure in a non-uniform electric field, carbon black deposited on the surface of a flat anode can ignite. The conditions and dynamics of carbon black ignition during the nanosecond discharge were determined. It was observed that the carbon black is ignited on the surface and continues to combust in the gap in the form of flame plumes for tens of milliseconds. It was also found that the combustion of carbon black can occur in both diffuse and spark discharges.
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