Laser Chemical Vapor Deposition Applications and Rapid Prototyping

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International Journal of

Laser Chemical Vapor

Department of Mechanical

ABSTRACTLaser Chemical Vapor Deposit

reactants. These reactants are formed by

of materials. Materials are such as se

deposition happens on a pyrolytic che

unbelievable capabilities which start fro

precise control, of thermal deposition. T

The LCVD process is a mask less techni

I. INTRODUCTION

LCVD is a recent application of the pproducing extremely strong and ultra pur

Figure 1 shows a typical CVD reaction c

to a specific level usually above 1000

energy for the deposition process is low

coating.

Over the last decade various re

were the first to grow large diameters

(<10um/s). In the next 10 years LCVD t

breakthrough was when the researchers

dimensional shapes by controlling the su

of graphite. Later Wallenburger later ad

produce the micro spring.

The LCVD process is a mask l

fabrication of polar and non polar which

II. RAPID PROTOTYPIN

Rapid Prototyping system fabric

occurs at the atomic level, producing a

process can fabricate fibers in any given

materials to composite structures. ThereRapid prototyping is a technology which

a 3-d technology rather then 2-d. The m

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cientific Research Engineering & Technology (I

Deposition Applications and Ra

KalpeshPradeep Mavalkar1

Engineering, Sinhgad College of engineering vadgao

ion is a very special process that a solid dep

extremely high temperatures. LCVD results in th

miconductors, metals, dielectrics, on to differ

ical reaction which occurs in the focus of a la

m a small size of a heated zone. This is a very

he direct control of the direction where the depo

ue.

rocess CVD which is Chemical Vapor Deposie ceramics, metallic fibers and surface coatings.

Figure 1 CVD Chamber

hamber. Gas reactants go into the heated chamb

C a chemical reaction is triggered to form a

st at a free surface. The solid reaction occurs at

searchers have modified the LCVD process. In

(>200um) carbon rods. The problem was the

he goal was to decrease fiber diameter and incre

ent beyond the scope of fiber growth. Engineer

bstrate movement. By 1991 Zong and Maxwell

vanced the technologyby simultaneously moving

ess technique which means flexibility and a fas

are extremely difficult tofabricate by convention

IN LCVD

ates complex net shaped metallic and ceramic st

material that is fully dense and pure and mech

directions. For the rapid prototyping this will

will be no limitations on multiple fabrications incan automatically make models from (CAD) dat

dels fabricated in this process have many uses. I

647 JSRET), ISSN 2278 – 0882Volume 3, Issue 3, June 2014

pid Prototyping

n, pune, India

sit is formed from gaseous

e deposition of various types

ent substrate materials. The

ser beam. This process has

special technology used for

ition occurs is extraordinary.

tion. CVD process used for

r.When the temperature rises

olid product. The activation

the surface producing a solid

1972, Nelson and Richards

growth rate was very slow

ase the growth rate. Then the

went into using LCVD in 3-

abricated a rectangular block

and rotating the substrate to

t rate process. It enables the

al methods.

uctures. The LCVD bonding

anically sounds. The LCVD

ive the capacity for multiple

this method. a. The rapid prototyping uses

t makes a great visual aid for




co workers and customers to elaborate i

typical rapid prototyping system is illust

Fi

In figure 2 this typical setup of a rapid

certain amount of gas is induced in the r

An argon laser produces a localized heat

begins to deposit materials on the heate

movement of the substrate where needed

III. APPLICATIONS IN RAPID P

This process builds 3-d models

light. The model is built on a platform th

Layers of adhesive coated she

consists of paper laminate with heat acti

the build platform, where there is doubl

Then the laser is used to cut an outline

needed to build the component which wiso the component will not get moisture d

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deas and thoughts. Prototypes can be used for t

ate

gure 2 Setup LCVD Rapid Prototyping

rototyped system. There are certain deposits re

action chamber.

spot on the substrate surface. Extremely high te

area. Then the computer measures the deposit

.

ROTOTYPING USING LCVD

Figure3. LCVD Stereo Lithography

from liquid photosensitive polymers that solidif

at is submerged in a liquid epoxy or acryl ate resi

t materials are bonded together to form a pro

vated glue rolled up on spools. The feeder colle

d sided foam tape. Then the heated roller applie

on the first layer, making it easy to remove. Th

ll have a wood like finish because it is made outamage.


sting a design. In figure 5 a

uired on a given layer. So a

mperatures the CVD reaction

growth rate and controls the

when exposed to ultraviolet

in.

totype.The original material

ctor advances a sheet over to

s pressure to bond the paper.

n this process is repeated as

of paper, then a sealer is used




IV. NEEDS, GOALS AND OBJEC

In the United States rapid prototyping i

techniques has developed slower. In Ja

prototyping in these areas is very limitedThe needs, goals and objectives of rapid

Japan has a inclination to strive on accur

V. CONCLUSION

The LCVD process is a fantast

different substrate materials. The extraor

method is astonishing in using various

applications, failure analysis.

Rapid prototyping is a phenom

design. The three dimensional printers ald picture.This method is a great visual a

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Figure4 Laminated Oil Manufacturing

Figure 5 Ink Jet Printing

IVES FOR RAPID PROTOTYPING

used more than in any other country. In Europ

an and in Europe rapid prototyping are being u

and slow. In Europe metal components and toolprototyping are the same in Europe and Japan b

acy, but in Europe the tooling industry is predom

ic method which allows deposition of a variet

dinary part of this is that it takes place in the are

types of applications in rewiring and connect

nal method, which allows you to construct a

llow engineers to quickly create prototypes fromid for conveying ideas to other co-workers and


e and Japan layered building

sed. The production of rapid

ing are the predominate task. t the importance is different.

inate.

of types of materials on to

of a laser beam. The LCVD

ing IC boards, laser etching

hysical model from a CAD

there design, rather than a 2- lients. Rapid prototyping for



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650International Journal of Scientific Research Engineering & Technology (IJSRET), ISSN 2278 – 0882Volume 3, Issue 3, June 2014

complicated objects is the best manufacturing process available today. Depending on the complexity of the prototype.

They require 3 to 72 hours to build; this depends on the size and difficulty of the prototype.

ACKNOWLEDGEMENT

The author is grateful to the support of Prof. S.D. Lokhande, Principal, Sinhgad College of engineering vagabond

pune, and prof. Vanakudre HOD of mechanical engineering department.

REFERENCES

1. “Rapid Prototyping and engineering applications” by Frank W. Liou publisher CRC press 2007.

2. “Chemical Vapour Deposition" by Yan Xiu- Tian 1st ED. publisher "Springer" in 2010 engineering

materials and processes.

Documents

Laser Chemical Vapor Deposition Applications and Rapid Prototyping