High-frequency induction plasmatron

Rydkin Maxim

“Thermal physics”

master of science course, first year

Introduction

Liquid

Solid

Gas

Plasma

Social image of matter states

Plasma = partially or fully ionized gas, which shows collective behavior

Definitions

Plasma = partially or fully ionized gas, which shows collective behavior

Plasmatron = plasma generator

Definitions

Plasmatron classification

Electrodeless plasmaElectrode plasma

Technical (low-temperature) plasma

Plasmatron classification

Electrodeless plasmaElectrode plasma

Technical (low-temperature) plasma

gas

2nd electrode1st electrode

arc

Plasmatron classification

Electrodeless plasmaElectrode plasma

Technical (low-temperature) plasma

gas

2nd electrode1st electrode

arc

- Higher durability

No electrode erosion

- Pure plasma

Plasmatron classification

Electrodeless plasma

ICP(inductively coupled plasma)

CCP(capacitively …)

Other(laser …)

Plasmatron classification

HF SHF

Temperature(1 atm.)

Current frequency

7000 – 11000 K

ICP(inductively coupled plasma)

60 kHz – 60 MHz 900 MHz – 5 GHz

inductor

HFgenerator

HF induction plasmatron (scheme)

Electromagnetic transformations

Electromagnetic transformations

Non-flow stationary discharge (energy balance)

Foucaultcurrents

E/m energy

Non-flow stationary discharge (energy balance)

Foucaultcurrents

E/m energy

Joule heat

Non-flow stationary discharge (energy balance)

Foucaultcurrents

E/m energy

Joule heat

Ionization energy(discharge maintaining)

E/m energy

Joule heat

Ionization energy(discharge maintaining)

Heat transfer(mainly, through walls)

Non-flow stationary discharge (energy balance)

Foucaultcurrents

inductor

HFgenerator

Non-flow stationary discharge

plasma-forming gas

inductor

HFgenerator

Stationary discharge in flow

plasma jet

plasma-forming gas

chamberinductor

HFgenerator

plasma jet

HF induction plasmatron (scheme)

Water-cooled quartz chamber

Chamber types

Water-cooled quartz chamber

Metal slotted chamber

Chamber types

Water-cooled quartz chamber

Porous quartz/ceramic chamber

Metal slotted chamber

Chamber types

Induction plasmatron (scheme)

plasma-forming gas

chamberinductor

HFgenerator

gas stabilization(shielding gas)

plasma jet

Gas stabilization

Axial Vortex

Gas stabilization

Axial Vortex

Applications

Plasma tool Welding

Cutting

Deposition of refractorymaterials (W, Mo, …)

Boring

Surface treatment

Applications

Plasma tool

Reduction of purematerials from theiroxides and chlorides

(Ta, Ti, Ge, U…)

Plasmachemicalreactor

TiO2 production

Spheroidizing

Applications

Plasma tool

Plasmachemicalreactor

Metallurgicalplasmatrons

Metal refining

Dispersed materialsproduction

Monocrystal materialsproduction

Applications

Plasma tool

Plasmachemicalreactor

Metallurgicalplasmatrons

Plasmaburner (torch)

Incineration of garbage

Applications

Plasma tool

Plasmachemicalreactor

Metallurgicalplasmatrons

Plasmaburner (torch)

Plasmatronsfor R&D

Study of:- aerodynamics processes

- thermal physics processes

Spectral analysis(ICP spectroscopy)

Thanks for your attention!

Questions & answers session