Laporan Elektroplating baja dengan Cu

UJIAN PRAKTIKUM KOROSI

SEMESTER GENAP TAHUN AJARAN 2014/2015

MODUL

: Pelapisan Tembaga

PEMBIMBING

Yunus Tonapa Tonapa Sarungu, Sarung u, MT : Ir. Yunus

: 22 Ai+ 2015

Tanggal U+ian

Tanggal Penerahan : 2 Ai+ 2015 -"aporan

Oleh

Nama

Kelas

:

:

:

1. Reni Reni Swaa waa Ma!a Ma!a" "i# i#aa

$121 $12142 424 402% 02%

2. Re&'a Diwan&(a! P.

$12142402)

*. A+,a Ti Ani&&a

$1214240**

*A

PRORAM STU!I !IP"OMA I# T$KNIK KIMIA PRO!UKSI %$RSI&

JURUSAN TE-NI- -IMIA POLITE-NI- NEGERI BANDUNG

'()*

I. TUJUAN 1. Me+a##an e+ai&an e3aa a"a +a 3e&i 2. Men6e+a&#an &e& e+ai&an e3aa /. Menea!i ena! 7aia&i wa# a"a &e& e+ai&an e3aa II. !ASAR T$ORI II.). $le01ropla1ing 2u -&i a"a+a! &e3a! &e& #e&a#an aeia+ (an "i&e3a3#an #aena

a"an(a inea#&i "enan +in#nan. Lan#a!8+an#a! enen"a+ian #&i "ianaan(a a"a+a! e+ai&an +a "enan e"a e+e#+ain 9e+ai&an +i&i#. Pe+ai&an e3aa 9; ea#an +ai&an "a&a &e3e+ +a "i+ai&i "enan +a +ain (an +e3i! enai# "an a!an e!a"a e&e#an$ +ai&an "a&a #aena +ai&an ; en(ai &i,a "a(a e#a #a eai  enai+an #an enai# aa "a! 3e3a! wana. E+e#+ain aa e+ai&an &e > M  ; > M2> -eaan in +a "ien#an +e! #&ena&i aa +an(a$ 

"ea6a "i&&ia&i$ "an #n&ena&i n& +ain. Ha+8!a+ (an e+ "ie!ai#an "a+a &e& e+ai&an "enan enna#an e3aa a"a+a! &e3aai 3ei# : 1 Se3e+ "i+ai&i$ 3en"a !a& "i+e& !ina !a+& "an "i3e&i!#an. 2 Ben"a "i+a##an en<
-enai#an &! +aan en(e3a3#an 3ea3a!n(a #an -i&a+. -ennann(a (ai e6a"i enanan aa +a$ enani e&ean(a H2. -eiann(a (ai 7i&#&ia& +aan enn$ +ai&an en6a"i #a&a. S! &ana enin n# #aena n# a&in8 a&in e+e#+ain a"a &! i. Pe+ai&an ; a"a  a#i# ini a"a+a! &e#ia 50@;. ". H +aan T6an enen#an "ea6a #ea&aan a"a+a! n# ene > 2e



H2O > 2e



 ;

 H2 > 2OH8

An"a : ;

 ;2> > 2e



H2O

 C O2 > 2H> > 2e



II.'.

Perhi1ungan %era1 Menuru1 &u0um 3arra4a H# aa"a( en(aa#an 3a!wa a&&a (an "i!a&i+#an "a+a

&a &i&e &e+ e+e#+i&i& 3e3an"in +& "enan aan +i&i# (an ena+i "a+a &e+ e&e3. Be&an(a aan +i&i# (an e6a"i "a+a &e+ ea#an !a&i+ #a+i anaa #a a& (an "ia+i#an "enan +aan(a wa# e+e#+i&i&n(a. Pen(aaan ini ea#an in&i "a&a H# aa"a( (an "aa "i6e+a&#an &e3aai 3ei#: a. Da+a &e+ e+e##iia$ a&&a 'a (an "ien"a#an a"a &a e+e#"e &e3an"in "enan 3e&an(a aan +i&i# 9a+ian e+e#n (an e+i3a "i "a+a &e+. b. Ma&&a e#i7a+en 'a (an "ien"a#an a"a e+e#"e a#an &eaa "enan aan +i&i# (an "ia+i#an #e "a+a &e+. W =

 Ar ( x ) × I ×t  nF 

 Bea "e&i "i!in "enan H# aa"a( 9  I  Be&a a& (an "ina#an 9A    Laan(a &e& e+e<+ain 9"ei#  n  Ban(a#n(a e+e<n (an e+i3a 92 n# ; Pe!inan E,i&ien&i A& (an Dina#an

W  (¿¿ praktik )

( W teotitis ) η =¿

× 100

 a#i#  Bea "e&i (an "ie+e! "ai a#i# 9 eii& Bea "e&i "i!in "enan H# aa"a( 9 II./.

"ogam Murni 4an logam pa4uan La ni (ai +a "enan &i,a8&i,a :

1. -a"a #enian $ . 2. -e#aan ai# en"a! *. Tii# +e3 ini 4. Da(a !ana +i&i# 3ai# 5. Da(a a!an e!a"a #aa 3ai#.

La a"an (ai +a
III.M$TO!O"OI ). A"AT !AN %A&AN A"AT Ge+a& -iia 1000 + 1 3a! Ge+a& -iia 250 + 4 3a! Pie # 10 + 1 3a! Teee 1 3a! i++e 1 3a! H +ae La ; 9#a"a La e  Nea
%A&AN Laan NaOH 10 Laan H;+ 10 Laan na ;e 1 L Aa"e&

Menae+a& &ea 3en"a #e6a 9ea&# #awa "enan #ea& a3a&i, 

Me3i+a& 3en"a #e6a "enan ai (an ena+i 

Menein#an 3en"a #e6a

Mea&##an 3en"a #e6a #e "a+a +aan NaOH 10 &e+aa 10 eni

Me3i+a& 3en"a #e6a "enan aa"e&

Mea&##an 3en"a #e6a #e "a+a +aan H;+ 10 &e+aa 10 eni

Me3i+a& 3en"a #e6a "enan aa"e&

b. Proses Pelapisan

Men(iaan 3a# &e& e+ai&an "an ean#ai e<i,ie "an en(a3n#an 3en"a #e6a &e3aai #a"a "an +a ; &e3aai an"a

Menen#an 3e&a aa a& (an a#an "ina#an

Ha"a#an 3en"a #e6a a"a +a ; 9i"a# enee+

Menaai &e& (an e6a"i

Me+a##an e+ai&an &e+aa 12 eni "an 25 eni

Be&i!#an 3en"a #e6a "enan ai (an ena+i  I#. P$NO"A&AN !ATA I#.). Tabel !a1a Pengu0uran

No 1 2 * 4 5 %

I#.'.

Parame1er La& Pe#aan 9< Bea awa+ 9a Bea a#!i 9a Se+i&i! 3ea 9a A& 9A a# e+ai&an 9"ei#

"ogam A

"ogam %

20$F $% 10$F2 1$22 0$22 )20

21$4 10$1 10$4F5F 0$*F 0$22 1500

Perhi1ungan &u0um 3ara4a

 Ma x I x t   n x F 

a. "ogam A  3.   12 eni  )20 "ei#  <. I  0$22 A ".  

63,5

g. "ogam % !.   25 eni  1500 "ei#  i. I  0$22 A  6.  

gr  x 0,22  A x 720 detik  mol 2 x 96.500 Coulumb

63,5

e.   0$0521 a 5. I#./.

gr x 0,22 A x 1500 detik  mol 2 x 96.500 Coulumb

0.   0$10F a

Perhi1ungan $5isiensi $le01ropla1ing "ogam A

I?.4.

I?.5.

E,i&ien&i



I?.). "ogam % I?.F.

I?.. Selisih Massa  Massa Teoritis I?.%.

 2.*41$%5

 100

E,i&ien&i

Selisih Massa  Massa Teoritis





 100 0,38 gram

I?.10.



100 I?.11.

 *51$F5

0,108 gram

1,22 gram 0,0521 gram

 100



I#.)'. I#.)/.

#. P$M%A&ASAN #.). Oleh Reni S6ara Mahar4i0a -NIM. )')7'7('8 ?.2. Pin&i "a&a e+e#+ain a"a+a! e+ai&i e#aan 3en"a #e6a "enan

+a 6eni& +ain n# ee3ai#i #a+ia& e#aan "ai 3en"a #e6a e&e3. Be&i ea#an +a (an "a! ena+ai #&i #ei#a #na# "enan "aa$ &e"an#an e3aa ea#an +a (an ei+i#i &i,a "a(a e#a (an #a &e!ina "aa "ina#an &e3aai 3a!an e+ai&. Nan$ e3aa (an "ina#an ea#an a"an e3aa "enan #ninan. Se!ina wana (an enee+ a"a 3e&i #an enai#. O+e! #aena i$ "i3!#an e+ai&an +e3i! +an6 "enan ni#e+ "an #. ?.*.

Pe+ai&an +a ea#an &a+a! &a +an#a! n# en
e6a"in(a #&i aa enani +a6 #&i. P&e& e+ai&an "aa 3e+an&n #aena e#n(a 3e"a en&ia+ anaa an"a "an #a"a "enan a"an(a +aan e+e#+i &e3aai en!anan(a. P&e& e&e3 3e+an&n "enan 3anan a& +i&i# D; "ai a+a rectifier   "an eanan (an #n&an. E+e#n a#an ena+i  e+ewai #a3e+$ &e"an#an in8in a#an e!ana e+ewai +aan e+e#+i. ?.4.

Se3e+ e+ai&an +a "i+a##an$ e+e3i! "a!+ +a8+a

"i3e&i!#an "enan enna#an #ea& a3a&i 9ea&# #awa en(ana. -e"ian +a 3e&i "i+a##an &e& degreasing   a"a +aan NaOH 10 n#  en!i+an#an &i&a8&i&a +ea# (an enee+ "i e#aan 3en"a #e6a. Se+an6n(a "i+a##an &e&  pickling  a"a +aan H;+ 10 aa #aa8#aa (an enee+ a"a +a 3a6a !i+an #aena a#an e&#an i#aan anaa +a "an #&i"an(a. ?.5.

Laan e+e#+i (an "ina#an a"a+a! na ;e 9;SO 4 (an

&"a! "ia3a!#an 3i!ene. n&i 3i!ene a"a+a! &e3aai en#i+a "an  e3ei wana (an enai# a"a +ai&an e3aa. Laan e+e#+i (an "ina#an e+e3i! "a!+ "iana&#an &aai 50 ⁰;$ #aena aa3i+a &!n(a +e3i! ini a#a a#an e&a# in8in e3aa (an e+a &e!ina en6a"i e3a#a. n&i +aan ini (ai &e3aai en!ana +i& i# "an e"ia e+aan "ai in +a. Aa3i+a "iai#an$ a#a +aan e+e#+i "aa "iai#an "a+a e&aaan ea#&i #iia &e3aai 3ei#: ?.%.

;SO4

;2> > SO428

?.).

-ei#a a& +i&i# "ia+i#an$ a#a aan in &ii, a#an "iai# #e

#a"a$ &e"an#an in 3eaan neai, 3ein"a! #e aa! an"a. Da+a  &e& ini$ +a (an 3ein"a# &e3aai an"a a"a+a! +a e3aa$ "an +a 3e&i 3ein"a# &e3aai #a"a (an a#an "i+ai&i. ?.F.

See+a! eana&an &e+e&ai$ +aan e+e#+i "ian#an a"a 3a!an

(an e3a "ai +ii+en &e3aai 3a# e+e#+ain. Pa"a &aa a& +i&i#  ena+i$ a"a an"a e6a"i ea#&i #&i"a&i$ &e!ina +a ; a#an eai en6a"i in ;2> "i&eai "enan e+ea&an e+e#n. Se+ain i$ e3en# +a a& #&ien a#i3a #&i"a&i ai "an ;9OH 2 (an enee+ a"a e#aan an"a. ?..

Rea0si 4i ano4a

:

2H2O

?.10. ?.11.

 O2 > 4H> > 4e



 ;2> > 2e

;



Pa"a wa# (an 3e&aaan +a$ "i "aea! #a"a e6a"i ea#&i

e"#&i "iana in +a ;2> (an 3ea&a+ "ai +a "an +aan e+e#+i ee"#&i a#an e+ai&i +a 3e&i. Se+ain i$ e6a"i e3en##an a& H 2  (an "ian"ai "enan e+e3n "aa "i &e#ia #a"a a#i3a e"#&i ai. ?.12.

Rea0si 4i 0a1o4a

:

H2O > 2e

?.1*. ;2> > 2e ?.14.

 H2 > 2OH8



 ;



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Dai !a&i+ e!inan !# ,aa"a($ e+ai&an #e"a +a

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E+e#+ain a"a+a! &a+a! &a
#&i. Pin&i "a&a "ai e+e#+ain ini a"a+a! e+e#+i&i& (an en(e3a3#an #&i"a&i a"a an"a "an e"#&i a"a #a"a &e!ina in8in +a !a&i+ #&i"a&i  a"a an"a a#an e+ai&i e#aan #a"a. Se+ain i$ e+e#+ain 6a 3e,n&i &e3aai !ia&an "e#ai,. Pa"a e<3aan ini$ "a +een +a 3e&i a#an "ie+e#+ain "enan e3aa. La e3aa "i6a"i#an &e3aai an"a &e"an#an +een 3e&i "i6a"i#an &e3aai #a"a. A"an +aan aa (an "ina#an a"a+a! 'na <e 50 /L (an "iana&#an &aai 50 ⁰;$ #aena aa3i+a &!n(a +e3i! ini a#a a#an e&a# in8in e3aa (an e+a. ?.1.

Se3e+ ea&#i &e& e+e#+ain$ +een 3e&i e+e3i!

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Bei#n(a a"a+a! e3a an#aian e+e#+ain$ P&e&

e+e#+ain ini enna#an e<i,ie n# en3a! a& +i&i# A; "ai &3e +i&i# en6a"i a& D;. -aena e+e#+ain !an(a "aa "i+a##an "enan a& D;. -e"ian$ #3 neai, "i!3n#an "enan +een 3e&i &e3aai #a"a "an #3 &ii, "i!3n#an "enan +a e3aa &e3aai an"a. -e"ian &e& e+e#+ain "i+an&n#an "a+a +aan 'na

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Pa"a &e& e+e#+ain ini 3e+an&n ea#&i &e3aai

 3ei#. #.''. Rea0si 4i Ano4a

?.2*. ?.24. #.'*. ?.2%. ?.2).

2H2O ; Rea0si 4i Ka1o4a ;2> > 2e H2O > 2e

O2 > 4H> > 4e ;2> ; H2 > 2OH8

?.2F.

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an 9< ?.*. B

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%

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Ha+ ini e6a"i #aena a"a an"a +a e3aa &"a! !a3i& &e!ina (an

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In8in e+e#+i  zonnax copper 9;SO4 eai en6a"i

;2> "an

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Pa"a an"a$ ; a#an e#&i"a&i en6a"i ;2 >$ ;2>  ini 3eea#&i

"enan OH8 e3en# a"aan (an enee+ a"a an"a 3ea a"aan

 3ewana #e!i6aan (ai ;9OH2. Se"an#an a"a #a"a in8in ;2>  a#an ee"#&i en6a"i ; "an en"aan ; (an e3en# a#an enee+ a"a 3en"a #e6a "an e+ai&i 3en"a #e6a e&e3. Pe3a!an wana +a en6a"i ea! #e<#+aan 9ea! e3aa enn6##an 3a!wa +a e&e3 e+a! e+ai&i +e! ;. ?.)5.

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wa# )20 "ei# "an 1500 "ei#. See+a! "i+a##an enanan a&&a 3en"a #e6a a#!i "i#ani a&&a 3en"a #e6a awa+ "i"aa ni+ai a&&a +ai&an (an e3en#   a"a 3en"a #e6a$"i&e3 a&&a n(aa. Se"an#an en ei ,aa"a( en(aa#an  3a!wa a&&a (an "i!a&i+#an "a+a &a &i&e &e+ e+e#+i&i& 3e3an"in +& "enan aan +i&i# (an ena+i "a+a &e+ e&e3. Be&an(a aan +i&i# (an e6a"i "a+a &e+ ea#an !a&i+ #a+i anaa #a a& (an "ia+i#an "enan +aan(a wa# e+e#+i&i&n(a. Pen(aaan ini ea#an in&i "a&a H# aa"a( (an "aa "i6e+a&#an &e3aai 3ei#$ (an "i&e3 a&&a eii& :

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a&&a n(aa9a"a &aa a#i# (ai 1$22 a "an a&&a eii& eii& 0$0521 a. Se!ina "i"aa e,i&ien&i &e& 2*41$%5. Se"an#an a"a +a B (an "i+a##an elektroplating &e+aa 1500 "ei# "i"aa a&&a n(aa 9a"a &aa a#i# (ai 0$*F a "an a&&a eii& 0$10F a. Se!ina e,i&ien&i &e& *51$F5. Ha+ ini i"a# &e&ai ei (ai &ea#in +aa wa# &e& a#a a&&a (an "i!a&i+#an &ea#in 3e&a. ?.)F. La (an "ina#an #en#inan 3#an ea&# +a ni #aena enan"n +a8+a +ain "i "a+an(a. La a"an e&e3 "i+ai&i +ai "enan +ai&an ;. Ha+ ini "aa e+i!a "ai +ai&an (an 3ewana ea! e3aa &"a! 3e#an. Se!ina e+ "ie!ai#an 6i#a ; "ie#aan +a  a"an e&e3 &"a! !a3i&. Ja"i$ 3i&a "ie"i#&i 3a!wa (an enee+ a"a #a"a a"a+a! +a +ain (an 3ea&a+ "ai +a a"an ;. Se!ina a&&a (an "i!a&i+#an e+e3i!i a&&a &e
&i&a ; +e3i! 3an(a# enee+ a"a ea&i eaa (ai +a a"a &aa wa# ea&i )20 "ei#. ?.). Be3eaa <n! +a a"an e3aa (ai -ninan 9 Brass (an ea#an a"an e3aa "enan n& aa &en 9n +a+ Pen 9 bronze$ ea#an a"an e3aa "enan n& aa ia! i!$ &e"an#an 9Sn &e3aai n& a"an. Pe3en#an +ai&an +ain "i e#aan #a"a "aa "i+i!a e3en#n(a wana (an 3e3e"a "ai wana +a ;. #.;(. #I. SIMPU"AN #I.). Dai !a&i+ e+e#+ain a"a +a A "an +a B$ #e"an(a ena+ai

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