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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
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International Journal of
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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cientific Research Engineering & Technology (I
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.
648 JSRET), ISSN 2278 – 0882Volume 3, Issue 3, June 2014
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
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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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cientific Research Engineering & Technology (I
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
649 JSRET), ISSN 2278 – 0882Volume 3, Issue 3, June 2014
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.