Features of nucleation in welding fumes from gas metal arc welding

被引：6

作者：

Vishnyakov, V., I ^{[1
]}

Kozytskyi, S., V ^{[2
]}

Ennan, A. A. ^{[1
]}

机构：

[1] Phys Chem Inst Environm & Human Protect, 3 Preobrazhenska St, UA-65082 Odessa, Ukraine

[2] Natl Univ Odessa Maritime Acad, 8 Didrikhson St, UA-65029 Odessa, Ukraine

来源：

JOURNAL OF AEROSOL SCIENCE | 2019年 / 137卷

关键词：

Plasma; Welding fumes; Nucleation; Ionization balance; PRIMARY PARTICLES; IONIZATION; ELECTRON; PLASMA; TEMPERATURE; ENERGY;

D O I：

10.1016/j.jaerosci.2019.105439

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Ionization balance and nucleation in the plasma, which is formed in welding fumes from gas metal arc welding, are studied. It is demonstrated, that large number of nuclei causes the replace of volume thermal ionization by ionization via nucleus surface. The equation for change in Gibbs free energy during nucleation should be also replaced. Absence of the easy-ionizable additional agent forces the iron atoms to execute both functions: a source of ionization and a source of nucleation. As a result nucleation occurs during short time, because condensable material promptly ends.

引用

页数：7

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