Lecture 3- Material Science

8/18/2019 Lecture 3- Material Science

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LECTURE 3- Material Science14 December 2014

Metallic Bonding

Ionic Bonding

o!r State" o# Matter

LB Taclan$ %&D


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' Board(or)" Ltd 20041 o# 20

' Board(or)" Ltd 200*2 o# 1+

Metallic Bonding


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Atoms of metals are tightly packed together in a giantlattice similar to the lattice in ionic compounds.

This attraction is called metallic bonding and isthe reason why the positive metal ions do notrepel each other.

The outer electrons separate from their atomsand become delocalized, creating a ‘sea ofelectrons’. The atoms become positive ions andare attracted to these electrons.

metalatom"

"ea o# #reeelectron"

metalion"

Metallic bonding


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%ro8ertie" o# metal"9 den"it:

Metal ion" #orm a lattice (&ic& i" more tig&tl:8ac)ed and den"er t&an t&e lattice" in ioniccom8o!nd"; T&e: #orm cr:"tal" called grain";

&ic& metal &a" t&e lo(e"t melting 8oint

Metal" generall: &a


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%ro8ertie" o# metal"9 "trengt&

Metal" are !"!all: to!g&$ not brittle; &en a metal i"&it$ t&e la:er" o# t&e lattice >!"t "lide o


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Metal 7rain"

La:er" o# atom" can "li8 o


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Dierent t:8e" o# allo:"

/dding dierent element" to metal" create" dierentallo:"$ (it& dierent 8ro8ertie"; T&i" aect" &o( allo:"can be !"ed; U"!all:$ ot&er metal" are added$ #oream8le9

@inc$ magne"i!m and co88er are added toal!mini!m to create an allo: t&at i" lig&t b!t oinot&er metal" toget&er;


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7lo""ar:

allo: = / material containing t(o or more metal"$ ora metal and a non-metal;

delocali@ed = Electron" t&at are #ree to mo


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CHEMICAL BONDING

PART 1IONIC BONDING


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Elements

• Elements are the simplest substanes!

There are ab"ut 1## $i%%erent elements N

S

OC

Fe

K

N

N

N

N

N N

NN

• Eah elements has &ust "ne partiular

t'pe "% at"m that is $i%%erent t" the

at"ms in an' "ther element

• E(en in elements at"ms usuall' &"in

)b"n$* t"+ether!

•In s"me elements at"ms b"n$ t" %"rmsmall simple strutures!

• In "ther elements at"ms b"n$ int" +iant

strutures ,ith milli"ns "% at"ms!


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C"mp"un$s

• C"mp"un$s are %"rme$ ,hen

$i%%erent elements hemiall' reatt"+ether!

• In these reati"ns $i%%erent t'pes "%at"m be"me hemiall' b"n$e$!

• Li-e elements s"me "mp"un$sha(e small simple strutures ,ith

&ust a %e, at"ms b"n$e$ t"+ether

• Other "mp"un$s ha(e lar+e."mple/ strutures "ntainin+th"usan$s "r e(en milli"ns "%b"n$e$ at"ms!

OH H

Water – a simple

structure

DNA – a large &

complex

structure


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C"mp"un$s are n"t &ust mi/tures

• Reatin+ is $i%%erent t" &ust mi/in+!• The ph'sial an$ hemial pr"perties "% "mp"un$s are

ver $i%%erent t" their "ri+inal elements!

Carb"n 0 "/'+en Carb"n $i"/i$e

COMPONDELEMENT2

C O O CO O

)bla- s"li$* )"l"urless +as.

that supp"rts

"mbusti"n*

)a "l"urless +as. that

e/tin+uishes %ire*


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C"p' the Table an$ %ill in the last "lumn!

2iO32an$

H+Merur'

4e3

O5

Rust

O3O/'+en

H3O6ater

Cu2O7C"pper sulphate

NiNi-el

NaCl2"$ium hl"ri$e

Element "r "mp"un$4"rmulaName

"mp"un$

element

"mp"un$

"mp"un$

element

"mp"un$

element

"mp"un$

Rust

"nsists "%

ir"n

"mbine$

,ith

"/'+en

Ati(it'


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B"n$in+ an$ at"ms

8Pr"t"ns 9 These e/ist in 8Neutr"ns 9 the nuleus!

T" un$erstan$ b"n$in+ ,e must -n", a little ab"ut

the at"ms %r"m ,hih elements are ma$e!

At"ms "nsist "% three t'pes "% partiles that are e(en

smaller than at"ms:

–Eletr"ns 9

e/ist in la'ers )"r shells* ar"un$ the"utsi$e "% the nuleus


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N" har+e "n element at"ms

T," "% the three partiles in at"ms ha(e an eletrial har+e!

Pr"t"ns 01 Neutr"ns # Eletr"ns ;1

BT at"ms ha(e equal numbers "% pr"t"ns an$ eletr"ns! This means

their "(erall har+e < zero!

Fluorine

" protons "#

" electrons "$

% neutrons

'otal C(arge

%"

4"

4"r e/ample )Ne%

Neon Cop & Fill in t(e gaps

*** protons ***

*** electrons ***

***neutrons ***

'otal C(arge ***

%

%

%

%#

%$


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N"ble Gases: %ull shells

The eletr"ns ar"un$ the "utsi$e "%

at"ms are arran+e$ in la'ers alle$shells

Eah shell has a ma/imum number"% eletr"ns that it an h"l$!

In n"ble +ases the shells are "mpletel' %ull ratherthan partiall' %ull!

Durin+ b"n$in+ "ther at"ms tr' t" attain the =%ulleletr"n shell> struture "% the n"ble +ases!

1st 2hell:

3 eletr"ns3n$ 2hell:

? eletr"ns

5r$ 2hell:? eletr"ns

T % b $i


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T'pes "% b"n$in+

At"ms an be &"ine$ t"+ether in 5 p"ssible

,a's

All three t'pes in("l(e han+es in the eletr"ns in the "uterm"st

eletr"n shells "% the at"ms

+onic Bonding

Metal and

non$metal

Covalent Bonding

Non$metals

onl

Metallic Bonding

Metals onl


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IONIC BONDING

IONIC BONDING


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M"st i"ni "mp"un$s "ntain a metal an$ a n"n;metal!

6hen metals reat the' l"se "uter shell eletr"ns t" lea(e a %ull eletr"nshell!

This pr"$ues a har+e$ at"m )i"n* ,ith a # har+e!

L"se 1 "r m"re

eletr"ns

Neutral at"m

n#

P"siti(e i"n

6hen n"n;metals reat ,ith a metal the' +ain eletr"ns t" ahie(e a %ulleletr"n shell!

Gain 1 "r m"re

eletr"ns

Neutral at"m

n$

Ne+ati(e i"n

IONIC BONDING

O it tt t l tti


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opposites

attract

Opp"sites attrat 8 latties

The "pp"sitel' har+e$ i"ns are attrate$ int" a

lattie that +ets bi++er an$ bi++er until it "nsists

"% milli"ns "% i"ns

#

#

#

#

#

#

$

$

$

$

$

$

# $# $

#$

# $

#$

#

$

# $

#$

#

$

$# #

And ion, andion, and ion-


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I $ l t t t


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I"ns an$ eletr"n strutures

Metals l"se eletr"ns t" %"rmp"siti(e)0* i"ns alle$ ati"ns!

N"n;metals +ain eletr"ns t" %"rmne+ati(e )8* i"ns alle$ ani"ns!

n#

n$

6e -n", that the at"ms l"se "r+ain eletr"ns t" ahie(e %ulleletr"n shells!

T" un$erstan$ m"re ab"ut h",i"ni "mp"un$s %"rm ,e mustl""- at ,hat is happenin+ t" the"uter shell eletr"ns!

4 ti % $i hl i$


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4"rmati"n "% s"$ium hl"ri$e

%! Formation o1 sodium ions

2"$ium has 1 eletr"n in its "uter shell!

I% it l"ses this it ,ill ha(e n" partiall' %ille$ shells!

2oses %electron

Sodium %# ion 3)!4!5Sodium atom 3)!4!%5

This "nl' happens i% there is an"ther at"m able t" a"mm"$ate the l"st

eletr"n!

Na Na#

4 ti % $i hl i$


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4"rmati"n "% s"$ium hl"ri$e

3!4"rmati"n "% Chl"ri$e i"ns

Chl"rine has @ eletr"ns in its "uter shell!

I% it +ains 1 eletr"n it an ahie(e a %ull "uter eletr"n shell! It is. there%"re.

+"in+ t" be able t" aept the eletr"n that the s"$ium ,ants t" l"se!

C(lorine atom 3)!4!65

7ains % electron31rom sodium5

C(lorine + $ ion 3)!4!45

Cl Cl

4"rmati"n "% 2"$ium Chl"ri$e the "(erall pr"ess


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4"rmati"n "% 2"$ium Chl"ri$e; the "(erall pr"ess!

ClNa

Na Cl

2"$ium l"ses its

"uter eletr"n!Chl"rine +ains it!

The result is

b"th en$ up ,ith

%ull shells

T," "pp"sitel'

har+e$ i"ns

are %"rme$.

,hih attrat!

Milli"ns "% suhpairs %"rm a

+iant lattie

2impler eletr"n $ia+rams


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2impler eletr"n $ia+rams

6e an assume %ull inner eletr"n shells!

6e an there%"re s"metimes sh"rten b"n$in+ $ia+rams

b' "mittin+ t" $ra, the inner eletr"n shells!

Na Cl

Na Cl

B"n$in+ in Ma+nesium O/i$e


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OMg

3!?!3! 3!

Ma+nesium

at"mO/'+en

at"m

B"n$in+ in Ma+nesium O/i$e

M"re than "ne eletr"n ma' be trans%erre$

bet,een at"ms in i"ni b"n$in+!

Mg)# O)$

3!?3!?

Ma+nesium O/i$e

Dra, a simpli%ie$ b"n$in+ $ia+ram )"mittin+


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Dra, a simpli%ie$ b"n$in+ $ia+ram )"mittin+

inner shells* %"r ma+nesium "/i$e!

MgO

Ma+nesium

at"mO/'+en

at"mMg)# O)$

Ma+nesium O/i$e

C"p' the $ia+ram an$ $ra, an"ther b"/ sh",in+


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2"$ium 4lu"ri$e

2"$ium

at"m4lu"rine

at"m

C"p' the $ia+ram an$ $ra, an"ther b"/ sh",in+

the eletr"n "n%i+urati"n in s"$ium %lu"ri$e!

Na#

3!?3!?

FNa

3!?!1! 3!@

F$

B"n$in+ in Lithium O/i$e


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B"n$in+ in Lithium O/i$e

The b"n$in+ in lithium "/i$e is m"re "mpliate$ in thatthere are $i%%erent numbers "% eah at"m!

Li

Li

O

2i#

2i#

O)$

B"n$in+ in Lithium Nitri$e


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B"n$in+ in Lithium Nitri$e

The b"n$in+ in lithium nitri$e similarl' in("l(es $i%%erentnumbers "% eah at"m!

N

Li

Li

Li

2i#

2i#

N5;

Li

B"n$in+ in Aluminium 4lu"ri$e


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B"n$in+ in Aluminium 4lu"ri$e

In aluminium %lu"ri$e it is the n"n;metal at"ms that ,enee$ m"re "%!

F

F

F

Al Al

F

F

F

Ati(it'


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4"ll",in+ the pre(i"usl' sh",n sli$es $ra, b"n$in+

$ia+rams %"r the "mp"un$s %"rme$ %r"m the

%"ll",in+ at"ms:

1! Lithium )3!1* an$ %lu"rine )3!@*

3! 2"$ium )3!?!1* an$ sulphur )3!?!*

5! Ma+nesium )3!?!3* an$ sulphur )3!?!*

7! Ma+nesium )3!?!3* an$ %lu"rine )3!@*! Aluminium )3!?!5* an$ nitr"+en )3!*

Remember that the t"tal number "%eletr"ns l"st b' the metal must eual

the t"tal number "% eletr"ns +aine$ b'

the n"n;metal

Ati(it'

Eletr"ns L"st < Eletr"ns Gaine$


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3 eletr"ns

Eletr"ns L"st < Eletr"ns Gaine$

B"th s"$ium hl"ri$e an$ ma+nesium "/i$e are simple

i"ni "mp"un$s!

In b"th ases the metal an$ n"n;metal nee$ t" l"se "r

+ain the same number "% eletr"ns respeti(el'!

Na Cl1 eletr"n Na# Cl$

OMg O)$Mg)#

This is n"t al,a's the ase!

Di%%erent numbers "% eletr"ns


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C"nsi$er the reati"n "% s"$ium ,ith "/'+en! 8 2"$ium )3!?!1* nee$s t" l"se 1 eletr"n!

8 O/'+en )3!* nee$s t" +ain 3 eletr"ns

This an "nl' happen i% there are t," s"$ium i"ns %"rme$%"r e(er' "ne "/'+en i"n %"rme$!

The %"rmula ,ill be Na3O!

Na

O

Na

Na#

O)$

Na#

1 eletr"n per

s"$ium



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C"nsi$er the reati"n "% ma+nesium ,ith hl"rine! 8 Ma+nesium )3!?!3* nee$s t" l"se 3 eletr"n!

8 Chl"rine )3!?!@* nee$s t" +ain 1 eletr"ns

6e nee$ 3 hl"rines %"r e(er' "ne ma+nesium!

The %"rmula ,ill be M+Cl3

Cl

Mg

Cl

Mg)#

Cl$

Cl$

3 eletr"ns


Char+es "n i"ns


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Char+es "n i"ns

• 6hen at"ms %"rm i"ns the' aim t" attain eletr"n

shells that are either "mpletel' %ull "r "mpletel'empt'!

• I% ,e -n", the eletr"n "n%i+urati"n "% an at"m ,e

an usuall' ,"r- "ut h", man' eletr"ns it must l"se

"r +ain t" ahie(e a n"ble +as "n%i+urati"n!

• This ,ill tell us the har+e "n its i"n!

Char+es an$ Metal i"ns


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Char+es an$ Metal i"ns

• Metals usuall' l"se eletr"ns t" empt' this "uter shell!• The number "% eletr"ns in the "uter shell is usuall'

eual t" the +r"up number in the Peri"$i Table!4"r e/ample.

M+

3!?!3

Mg)#

Al

3!?!5

Al/#

Li

3!1

2i#

Char+es an$ n"n;metal i"ns


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Char+es an$ n"n metal i"ns

• Outer shells ,ith "r m"re eletr"ns usuall' +aineletr"ns t" %ill up the "uter shell!

4"r e/ample.

• O/'+en )3!* +ains 3 eletr"ns t" %"rm O)$

• Chl"rine )3!?!@* +ains 1 eletr"n t" %"rm Cl$

ClO

3!3!

? O

O)$

3!?!@ 3!?!?

Cl Cl$


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The %"rmulae "% i"ni "mp"un$s


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This is m"st ui-l' $"ne in sta+es!

Remember the t"tal 0 an$ 8 har+es must


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4"r e/ample. the %"rmula "% aluminium br"mi$e!

1! 2'mb"ls: Al Br 3! Char+e "n i"ns 50 1;

5! Nee$ m"re "% Br

7! Rati" "% i"ns 1 5

! 4"rmula AlBr /

Br Al

Br

Br

5 eletr"ns

Al/# Br $

Br $

Br $




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4"r e/ample. the %"rmula "% aluminium "/i$e!

1! 2'mb"ls: Al O3! Char+e "n i"ns 50 3;

5! Nee$ m"re "% O

7! Rati" "% i"ns 3 5 )t" +i(e e;*

! 4"rmula Al)O/

OAl

O

OAl

3e;

3e;

3e;

Al/#O)$

O)$

O)$

Al/#


Ati(it'


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sin+ the meth"$ sh",n "n the last %e, sli$es. ,"r-

"ut the %"rmula "% all the i"ni "mp"un$s that '"u anma-e %r"m "mbinati"ns "% the metals an$ n"n;metals

sh",n bel",:

•Metals: Li Ca Na M+ Al

•N"n;Metals: 4 O N Br 2 Cl

Ati(it'

M"re C"mpliate$ 4"rmulae


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• I"ni "mp"un$s ma' "ntain i"ns "nsistin+ "%

+r"ups "% at"ms rather than a sin+le at"m!

• Here are s"me m"re "mpliate$ i"ns '"u ma'"me ar"ss!

At"ms presentChar+e4"rmulaI"n

3;

1;

10

3;

1;

CO53;

OH;

NH70

2O73;

NO5;

arb"nate

h'$r"/i$e

amm"nium

sulphate

nitrate N O O O

OS OOO

N : : : :

O :

C O O O



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1! 2'mb"ls: Li NO5;

3! Char+e "n i"ns 10 1;

5! Nee$ m"re "% neither

7! Rati" "% i"ns 1 1

! 4"rmula 2iNO/

• 6hen ,"r-in+ "ut %"rmula '"u simpl' treat the entire

+r"up "% at"ms as th"u+h it ,ere a sin+le at"m!

• The "nl' $i%%iult' is t" $" ,ith h", ,e ,rite $",n the

%inal ans,er!• 4"r e/ample. ,hat is the %"rmula "% lithium nitrate

" e C" p ate$ " u ae



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1! 2'mb"ls: M+ NO5;

3! Char+e "n i"ns 30 1;

5! Nee$ m"re "% NO5;

7! Rati" "% i"ns 1 3

! 4"rmula Mg3NO/*)

• 6hat is the %"rmula "% ma+nesium nitrate

• The bra-ets ar"un$ the NO5; i"n sh", that the 3 re%ers t" t," "mplete

NO5;

i"ns!

• It represents a t"tal "% 3 nitr"+ens an$ "/'+ens ,ith eah ma+nesium i"n!

p



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• 6hat is the %"rmula "% s"$ium sulphate

1! 2'mb"ls: Na#

SO;)$

3! Char+e "n i"ns 10 3;

5! Nee$ m"re "% Na#

7! Rati" "% i"ns 3 1

! 4"rmula Na)SO;

• N" bra-ets here as "nl' "ne 2O73; i"n nee$e$!

• N"te alth"u+h Na "ntains 3 letters it "nl' represents a sin+le at"m 8 s" n"

bra-ets

p

6rite $",n h", t" ,"r- "ut the %"rmula "%


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1! 2'mb"ls:

3! Char+e "n i"ns

5! Nee$ m"re "%

7! Rati" "% i"ns

! 4"rmula

Again we need brackets as 3 complete OH - ions are needed meaning

that for each aluminium there are 3 oxygens and 3 hydrogens.

Al/# O:$

/# %$

O:$

% /

Al3O:5/

aluminium h'$r"/i$e!



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1! 2'mb"ls:

3! Char+e "n i"ns

5! Nee$ m"re "%

7! Rati" "% i"ns

! 4"rmula

Again we need brackets as 2 complete NH ! ions are needed meaning

that for each sulphate ion there are 2 nitrogen and " hydrogens.

N:;# SO;

)$

%# )$

) %

3N:;5)SO;

N:;#

amm"nium sulphate!



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1! 2'mb"ls:3! Char+e "n i"ns

5! Nee$ m"re "%

7! Rati" "% i"ns! 4"rmula

No brackets for Al as only one atom e#en though it$s 2 letters.

%e do need brackets around the &O to show it is 3 complete sulphate ions.

Al/# SO;)$

/# )$

) /

Al)3SO;5/

Need to get total

c(arge


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• 4"rme$ ,hen a JJJJJ an$ n"n;metal reat!• Metals JJJ eletr"ns t" empt' their "uter

eletr"n shell!• N"n;metals JJJJJ eletr"ns t" %ill their "uter

eletr"n shell!

• The rati" "% metal i"ns t" n"n;metal i"ns ,ill$epen$ up"n the number "% JJJJJJJJ l"st

an$ +aine$!• The i"ns %"rme$ &"in up int" +iant JJJJJ!

p' +

%ill the +aps!

l"se latties

eletr"ns +ain metal

metal

l"se

+ain

eletr"ns

latties!


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6hih "% the %"ll",in+ ,ill ha(e i"ni b"n$in+

A! C"pper hl"ri$e

B! Ir"n

C! BrassD! 2ulphur $i"/i$e


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6hih "% the %"ll",in+ is NOT true "% i"ni

b"n$in+

A! Metal i"ns ha(e a 0 har+e

B! N"n;metal i"ns ha(e a ; har+e

C! The' %"rm a 3 $imensi"nal lattie

D! The' ha(e +iant strutures


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6hih "% the %"ll",in+ is true ab"ut the "/i$e ion

A! 4"rme$ b' "/'+en at"ms l"sin+ 3 eletr"ns!

B! O/'+en i"ns ha(e an empt' se"n$ shellC! E/ist in pairs

D! Ha(e a 3; har+e%9

O4


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6hih "% the %"ll",in+ is true ab"ut the s"$ium ion

A! Has a 3.?.1 eletr"n arran+ement

B! 4"rme$ b' s"$ium at"ms +ainin+ 1 eletr"n!C! 2"$ium i"ns ha(e an empt' se"n$ shell

D! Ha(e a 10 har+e)/

Na%%


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6hat %"rmula "mp"un$ ,ill be %"rme$ %r"mMn70 an$ O3; i"ns

A! Mn3O7B! MnO3

C! Mn3O

D! MnO7


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6hat %"rmula "mp"un$ ,ill be %"rme$ %r"mGa50 an$ 2O7

3; i"ns

A! Ga3)2O7*5

B! Ga5)2O7*3

C! Ga325O13

D! Ga )2O7*5


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ST/TES M/TTER

• The Four States of Matter

• o!r State"• Solid

• LiF!id

• 7a"• %la"ma


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ST/TES M/TTER

Ba"ed !8on 8article arrangement

Ba"ed !8on energ: o# 8article"

Ba"ed !8on di"tance bet(een8article"


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.inetic T&eor: o# Matter

Matter i" made !8 o# 8article" (&ic&are in contin!al random motion;


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!. "#$%

• articles of solids are

tightly packed,

vibrating about a fixed

position.

•Solids have a definite

shape and a definite

volume.

,eat


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2; #$&'$%

articles of liquids

are tightly packed,

but are far enough

apart to slide over

one another.

Liquids have an

indefinite shape and

a definite volume.

,eat


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3; 7/S

articles of

gases are very

far apart and

move freely.

Gases have an

indefinite shape

and an indefinite

volume.

,eat


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%,/SE C,/7ESDescription of

hase hange

!erm for hase

hange

"eat #ovement During

hase hange

Solid to

liquid

#elting

"eat goes into

the solid as it

melts.

Liquid

to solid

$ree%ing

"eat leaves

the liquid as it

free%es.


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%,/SE C,/7ES

Description of

hase hange

!erm for hase

hange

"eat #ovement During

hase hange

Liquid to

gas

&apori%ation,

'hich

includes

boiling and

evaporation

"eat goes into the

liquid as it

vapori%es.

Gas to

liquid

ondensation

"eat leaves the gas

as it condenses.

Solid to gas Sublimation

"eat goes into the

solid as it

sublimates.

( )#AMA


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(. )#AMA

( plasma is an

ioni%ed gas.

( plasma is a very

good conductor of

electricity and is

affected by

magnetic fields.

lasmas, like

gases have an

indefinite shape

and an indefinite

volume.

•

lasma is the

common state

of matter


71/91

%la"ma DeGnition


72/91

%la"ma DeGnitionIntrod!ction

• %la"ma i" a H8artiall: ioni@ed ga" in(&ic& ion"$ electron"$ and 8&oton"

are 8re"ent a" (ell a" radical" andmolec!le" in an ecited "tate

%la"ma DeGnition


73/91

%la"ma DeGnitionIntrod!ction• %la"ma i" a H8artiall: ioni@ed ga" in

(&ic& ion"$ electron"$ and 8&oton"are 8re"ent a" (ell a" radical" and

molec!le" in an ecited "tate

•7/SES 7E ILD

%la"ma DeGnition


74/91

%la"ma DeGnitionIntrod!ction• C!rrentl: in ind!"tr: (e !"e t(o

t:8e" o# 8la"ma;

8 %la"ma generated in a


75/91

%la"ma DeGnitionIntrod!ction• %la"ma i" al"o deGned b: t&e ga" or

ga"e" !"ed to ma)e !8 t&e 8la"ma

• Common ga"e" !"ed in generating8la"ma in man!#act!ring toda: are9o:gen$ argon$ nitrogen$ &:drogen$

"!l#!r &eaJ!oride and man: more

Some 8lace" (&ere 8la"ma" are


76/91

#o!ndK

1; lame"


77/91

2; Lig&tning

3; /!rora Hort&ern


78/91

Lig&t"

T&e S!n i" an eam8le o# a "tar in it"


79/91

8la"ma "tate

%la"ma DeGnition


80/91

%la"ma DeGnitionIntrod!ction• Cold 8la"ma di"c&arge" are

generated b: 8a""ing eno!g&electrical c!rrent t&ro!g& a ga" to

ca!"e t&e ga" to c&ange "tate

• T&i" electrical c!rrent o#ten deGne"

t&e 8roce"" to generate t&e t:8e o#8la"ma9 radio #reF!enc:$ micro(a


81/91

CLD %L/SM/ %E

I t d ti t S #


82/91

Introd!ction to S!r#ace"

• S!r#ace" commonl: #o!nd inman!#act!ring t&at are 8la"matreated are deGned b: t&eir

com8o"ition

• Eam8le" o# common material"9

metal"$ 8la"tic"$ r!bber$ ela"tomer"$8ol:mer"$ gla""$ ceramic"$ 8o(der"and liF!id"

I t d ti t S #


83/91


• T&ere are


84/91


• S!r#ace" can al"o be treated (&enmo


85/91

%la"ma /88lication"#or Man!#act!ring

• )lasma *lean

• )lasma Activate• )lasma +tch

• )lasma %eposition*oating

%la"ma /88lication"


86/91

%la"ma /88lication"

#or Man!#act!ring

)lasma *leanInorganic Com8o!nd"

- oil"$ mold relea"e$ 8ol:mer bleed$ drill

"mear$ Gnger8rint"$ "older J!$ carbon a"&Inorganic

- metal oide"$ metal oide red!ction

Decontamination- etracell!lar debri"$ 8:rogen"$ 8rotein"$

D/$ R/

%la"ma /88lication"


87/91


)lasma Activate

• S!r#ace /cti


88/91


)lasma +tch

• C&emical Etc&

• %&:"ical Etc&

%la"ma /88lication"


89/91


)lasma %eposition*oating

,:dro8&obic Hdoe" not li)e (ater

- abric"$ oot(ear$ Electronic"$ Medical

De


90/91

Concl!"ion"

• %la"ma 8roce""ing in man!#act!ringi"9 "a#e$ clean$ and co"t eecti


91/91

ST/TES M/TTER

SLID LIUID 7/S %L/SM/

Tig&tl: 8ac)ed$in a reg!lar

8attern6ibrate$ b!t do

Clo"e toget&er(it& no reg!lararrangement;6ibrate$ mo

Lecture 3- Material Science

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