Electric and thermal characteristics of the linear, sectional dc plasma generator

Abstract

The two-and three-chamber, linear, high voltage (200-300 V) and limited current (120-280 A) plasma generators (PGs) have been designed and manufactured by us for application in surface engineering. The operating and thermal characteristics (TC) of PGs, along with the distribution of w local plasma flow velocity (m s −1 ) w f plasma jet mean velocity (m s −1 ) ρ gas density (kg m −3 ) η PG efficiency σ electrical conductivity ( −1 m −1 )

Formation of carbon composite coatings by plasma spraying

“…Detailed description of the methodology of the plasma temperature and velocity calculation is given in Ref. [29]. The graphite powders with the elemental composition of carbon (C) e 95.9 at%, oxygen (O) e 2.9 at%, silicon (Si) e 1.0 at% and sulfur (S) e 0.2 at% were used as sprayed powders.…”

Numerical and Experimental Investigation of Two-Phase Plasma Jet during Deposition of Coatings

“…Experimental plasma spraying system ] consists of linear DC plasma generator (PG) 30 -40 kW of power with hot cathode and step-formed anode, plasmachemical reactor, systems of power supply and regulation, PG cooling, feeding and dosing. The operational characteristics of plasma generator are represented in [Valincius et al, 2004]. During plasma spraying experiments the operating conditions of plasma torch were maintained constant.…”

Microstructure and properties of plasma sprayed Al-doped YSZ coatings

“…YSZ thin films were deposited by means of linear single-chamber plasma torch [6]. The experimental procedure, equipment, and operating conditions have been described in detail elsewhere [7,8].…”