Plasma spraying using Ar-He-H2 gas mixtures

被引：38

作者：

Janisson, S

Vardelle, A

Coudert, JF

Meillot, E

Pateyron, B

Fauchais, P

机构：

[1] CEA, DAM Le Ripault, F-37260 Monts, France

[2] Univ Limoges, SPCTS, F-87060 Limoges, France

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 1999年 / 8卷 / 04期

关键词：

arc voltage fluctuations; Ar-He-H-2 gas mixtures; gas thermodynamic and transport properties; inert plasma spraying; plasma jet velocity;

D O I：

10.1361/105996399770350232

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In plasma spraying, the properties of the plasma-forming gas largely control the characteristics of the plasma jet and the momentum, heat, and mass transfers to the particles injected in the flow. The objective of this work was to investigate the effect of gas composition on the static and dynamic behaviors of the plasma jet. The latter behaviors were investigated from measurements of are voltage and plasma jet velocity. Ternary gas mixtures of argon, helium, and hydrogen were used. The results were expressed as correlations between are voltage and flow velocity, and the operating parameters of the gun for a specific nozzle diameter.

引用

页码：545 / 552

页数：8

共 12 条

[1]

Boulos M.I., 1994, THERMAL PLASMA FUNDA, V1

[2] VELOCITY-MEASUREMENT OF DC PLASMA JETS BASED ON ARC ROOT FLUCTUATIONS [J].