Future for INDIA !!!!!!!!

Er.Kuljeet Singh Juneja (EE, 4th year)Ajmer Institute of Technology,

Ajmer

Session OutlineSession Outline Electron Beam Technology• Introduction • Working Principle

Components Required Electron Accelerators• Block Diagram

Beam Control Technique Benefits Conclusion Bibliography

IntroductionIntroduction Electron beam technology is a process for treating

materials with high energy electrons produced by an accelerator to cause specific effects.

The electron beam heating was applied to the gas evaporation technique to produce fine metallic particles.

This electron beam evaporation system is used for the controlled deposition of thin dielectric films. The films are evaporated from a wide variety of solid sources. The most common dielectrics deposited are SiO2, SiO, TiO2, Ta2O5, SrF2.

This technology is provided a new impetus and a fresh direction to manufacturing operations by opening up newly accessible operating regimes for a large number of mechanical, chemical and metallurgical industries.

Working PrincipleWorking Principle In the evaporation process a block of the

material to be deposited is heated to the point where it starts to boil and evaporate. Then it is allowed to condense on the substrate the material that you want to coat.

The process begins under a vacuum of 10-5 torr or less.

Electron beam evaporation is a

commonly used process for coating lenses and filters with anti reflection, scratch resistant or other specialized coatings. The process is also commonly used for coating insulating and resistor films on electronic components.

The Electron Beam Evaporation process falls into a larger category of Micro Electro Mechanical Systems processes known as Physical Vapour Deposition and Chemical Vapor Deposition

Components RequiredComponents Required Electron Beam Evaporation gun

This can be used for emmit the beam on the material which are put in the block and deposited in the solution.

System Controller For Controlling the automatic system because when

beam incident on materials they generate more excess heat so we required a controller for controlling of this heat automatic.

Power Supply Neccessary for starting a system

Crucibles for the evaporation material Materials for Evaporation Material to be coated.

Electron AcceleratorsElectron Accelerators

..

Accelerators are machines that use electrical energy to generate free electrons accelerate them to high speeds and then direct them at materials passing through the accelerator on a conveyor or in another type of flow through system .

The electrons penetrate the material, which can be gaseous, liquid, or solid, and initiate chemical reactions that alter the properties of either the material or of specific components in or on the material.

These accelerated electrons are collimated through a window in the anode plate and proceed toward the materials to be treated.The accelerator which generates the electrons operates in both a pulse and continuous beam mode. Typically accelerators producing electrons with energies up to 10 MeV are used in industrial application.

Block Diagram of Electron Block Diagram of Electron AcceleratorAccelerator

By changing the value of the accelerating voltage U i.e. the potential difference between the cathode and the anode, it is possible to exert an effect on the value of the force acting on the electron.

It also depend on their size of electon machine gun. If we take a size of small gun then they genearte lightly beam as compared to larger one. In this gun we also uses sensors which they can sense the beam capacity and according to them we manage it manually or by system controller.

Electron Beam ControlElectron Beam Control

No load preconditioning needed . Shorter sterilization exposure time

typically less than 10 minutes. No chemical residuals. No degassing or aeration process

needed after sterilization. Environmentally friendly process. Faster processing. Lower expenses than with other

radiation techniques in some cases. Materials or components can be

resterilized under certain circumstances.

This technology has provided a new impetus and a fresh direction to manufacturing operations by opening up newly accessible operating regimes for a large number of mechanical, chemical and metallurgical industries.

Electron beam technology has being scientifically studied and implemented by the Medical Devices and Pharmaceutical Industry for many years and the potential use of ionizing radiation as a lethal agent against microorganisms has being demonstrated with satisfactory results..

Electron Beam Technology is currently finding wide application not only in nuclear, aerospace and defence related industries but also in conventional engineering industries. The users of EB machines, whether for thermal processing like welding, melting and evaporation or for non thermal processing like plastics modification and irradiation are steadily increasing.

BibliographyBibliography

Internet Resources :

• www.google.com• www.wikepedia.com• www.scripd.com• www.IEEE.com

Academic Books :

• Power Beams : E.Balagurusamy• Evaporation Techniques : E.Balagurusamy