Zuheir Talib
The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009
( AL -2Cu – 2Mg )
(3%HCl))
(Al-2Cu-2Mg)
(30,40,50,60,70,80C°)
(
(600X)
)
( (170°C)
(45min.)
(500C°)
(3hr.)
(500C°)
(12)
(80)
(30)
(24)
(80)
(30)
(180)
443
( AL -2Cu – 2Mg )
The Effect of Temperature On The Corrosion Behavior
of (Al-2Cu-2Mg) Alloy In The Acidic Solution .
Zuheir Talib Khulief Al-Tai
Babylon University/College of Eng.
Mat. Eng. Dep.
Abstract:
This study deals with the effect of temperature on the corrosion behavior of Al2Cu-2Mg) alloy by using simple immersion in acidic solution((3% HCl) by volume) at
(30,40,50,60,70,80C°). The weight change method and microscopic examination are
used in this study. Alloy without treatment, Solution heat treated at (500C°), Artificial
aged at (150C°) are used to complete this study. The result of effects of temperature on
the corrosion behavior of alloy in acidic solution showed a continuous increasing in
corrosion rate with increase the temperature of solution. The result showed that the
solution-treated alloy have the lowest weight losing compared with the untreated and
artificial aged alloys where the last one show a mid stat between the other states. In the
other hand the results of Arrhenius equation and the Arrhenius plots showed the rate of
corrosion of the solution heat treated alloy increase ( 12 ) time when increase the
temperature from (30C°) to (80C°) , the rate of corrosion of the artificial alloy increase
( 24 ) time when increase temperature in the same range above , and the untreated alloy
appears high increase in corrosion rate ; the rate of corrosion increase ( 180 ) time when
increase the temperature from (30C°) to (80C°) . The solution heat treated alloy submit
to the Arrhenius equation while the untreated alloy and the artificial alloy not submit to
the Arrhenius equation.
(Corrosion theory and Corrosion Protection ,EM1110 – 2-3400, Apr –
1995)
( Pierre R. Roberge,2000)
444
Zuheir Talib
The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009
(
Vanhile P. and Tosto S.,1992 )
(Eiji Akiyama , K . Asami ,2000)
( Al – Cr ) ( Al – Ti )
( Al – Cr ) ( Al – Ti )
( Ni,Mo )
(Al-Ti)
( Al-Ti-Ni ,Al-Cr-
( Mg)
(1M HCl )
(0.075M Na2B4O7+0.3M H3BO3+0.5M
Ti ,and Al-Cr-Mo )
(Al-Ti-Mg )
NaCl )
(D. A. Little and J. R. Scully ,2001)
( C416 - C415 )
(Al-Cu-Mg-Ag)
(SCC)
(99.99)
(0.006 – 0.06 M)
(NaCl)
(C416)
(C415)
(99.99)
( D.Bengtsson Blucher, J. E. Svensson and L.G. Johansson
( NaCl )
, 2002 )
( AA1070 )
( 4, 10 ,22 ,38 ,50, 60 C° )
445
( AL -2Cu – 2Mg )
( 14-70 mg/cm2 NaCl )
( 4 C° )
( 10,22,38 C° )
( 5-20 )
( 38 C° )
( 350 ppm )
( 60 C° )
(H. N. Mcmurray, G.- Williams
(
and S. O. Driscoll ,2002 )
( AA2024T3 )
SrCrO4 )
( 0.5 mol dm-3)
(
( HCl )
( 93%RH )
( 20 C° )
HCl )
( 9.24h,12h,23.30h,30.41h,37.4h,46.17h,54.22h )
(0%,1vol%,5vol% )
( HCl )
( Passivation )
(Ingrid Rink and D. Martin Knotter,2003 )
( 0.4% Cu )
(DS,XDS ) (8.4%H2SO4,3.8%H2O )
(8.4%
(DSPH)
(DSP)
( 8.4%,5% H2SO4 )
H2SO4,0.5%H3PO4 )
( 75 C° )
( 30 C° ,35 C° , 45 C° )
( 30,45 C° )
( XDS )
( 35,45 C° )
446
(DSPH)
Zuheir Talib
The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009
( 35,45 C° )
( 45 C° )
( Al , 0.4% Cu )
( DSPH,XDS,DS )
( 35 C° )
( DSP )
Al-2Cu-2Mg
( 30,40,50,60,70,80C° )
( Arrhenius Plots )
(Al-2Cu-2Mg )
1
2000
2004
2002
Heater
RT-1000ºC
-1
-2
4-5
447
( AL -2Cu – 2Mg )
-3
300-400ºC
15mm
(Sola Basic S.B Lindberg
500ºC
200-1200ºC
2
(
( 30 , 40 ,50 , 60 ,70 ,80 C° )
Jacob White ,Jw- England )
( Arrhenius )
HERGON-mp200V
Al–2Cu–2Mg
448
Zuheir Talib
The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009
500ºC
45min
( 3 hr. )
MLW
170 ºC
(3% HCl )
( Jacob White ,Jw- England )
(30,40,50,60,70,80C°)
0.0001
Sartorius
( 30 ,40 ,50 ,60 ,70 ,80 C° )
( Arrhenius Plots )
( union ME-3154 )
(600 X)
449
( AL -2Cu – 2Mg )
(1)
(3%HCl)
(30,40,50,60,70,80C°)
(50C°)
(30,40C°)
S,θ
HCl
(0.036
α
(R.G.Buchheit, R.K.Boger, M.W.Donohue ,2001 )
(2)
(0.0002 g/cm2.hr.)
(180)
(80)
g/cm2.hr)
(30)
(3)
(4)
(4)
(80C°)
(5)
(45min.)
(500C°)
(30,40,50,60,70,80)
(30,40,50C°)
θ
(Al2Cu) ,S(Al2Cu Mg)
450
Zuheir Talib
The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009
(αss)
(R.G.Buchheit,R.K.Boger,M.W.Donohue,2001,R.G.Buchheit,
(6)
R.K.Boger,2002)
(12)
(0.0024)
(0.0002)
(500Cº)
(7)
(8)
( 45 min.)
(80C°)
(8)
(9)
(3hr.)
(170C°)
(30,40,50,60,70,80C°)
(60)
(60)
S" , S'
(80)
3hrs.
S(Al2CuMg)
S",S'
(10)
(0.0002)
451
( AL -2Cu – 2Mg )
(24)
(3hr.)
(0.0048)
(170C°)
(11)
(12)
(12)
(13)
(30,40C°)
(14)
452
( 80C° )
Zuheir Talib
The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009
(180)
(12)
(80C°)
(30C°)
(24)
Corrosion theory and Corrosion Protection ,EM1110 – 2-3400, Apr – 1995 , http : //
www.tankspan.com / safety – miscellaneous.htm1.
D.A.Little and J. R. Scully, “An Electro Chemical Framework to Explain the Intergranular Stress Corrosion Path of two Al–Cu–Mg–Ag Alloys , C415 and C416” , PDF,
2001.
D.Bengtsson Blucher, J.E.Svensson and L. G. Johansson," The NaCl – Induced
Atmospheric Corrosion of Aluminum; the Influence of Carbon Dioxide and
Temperature", PDF ,2002 .
Eiji Akiyama, K. Asami and other, “Enhancement of Corrosion Resistance of
Amorphous Aluminum alloys by Alloying Additions”, pdf, 2001
H.N .Mcmurray, G. Williams and S. O. Driscoll , "Chromate Inhibition of
Filiform
Corrosion on Organic Coated AA2024T3 Aluminum Alloy Investigated using a
Scanning Kelvin Probe" , PDF .2002 .
Ingrid Rink and D. Martin Knotter, "Passivation of Aluminum and Aluminum – Copper
Alloys in Aqueous Acids", PDF, 2003.
N.Barrngton & M.Black, “Aerospace materials and manufacturing processes at the
millennium” On the web: http:// bookmark physics.iop.org/full books/0750307420/
cantorch 01.pdf.
453
( AL -2Cu – 2Mg )
R.G.Buchheit, R.K.Boger, M.W.Donohue, "Copper Dissolution Phenomena in Al-Cu
and
Al-Cu-Mg
Alloys",
2001.
On
the
web:http//www.mse.ohiostst.edu/%7Ebruedigm/RGB02.pdf
R.G.Buchheit, R.K.Boger, "Cu Redistribution and Surface Enrichment Due to
Dissolution of Al-Cu Alloys", 2002. On the web:http//www.mse.ohiostst.edu/%7Ebruedigm/RGB03.pdf
Pierre R. Roberge , " Hand book of Corrosion Engineering ", 1stEd., 2000.
Vanhile P. and Tosto S. ," Surface and Coatings Technology ", N (80),PP(295303),1992.
(1).
ALLOY
Al -2Cu – 2Mg
Al
96 % wt
Cu
2 % wt
Mg
2 % wt
2
3% HCl
1 mm
2 mm
15 mm
3% HCl
1 mm
1.5 mm
15 mm
3% HCl
1 mm
1.5 mm
-1.0
15 mm
0.1000
)
Weight loss ( g.cm
Log C.R ( g /cm .hr )
-1.5
-2.0
-2.5
-3.0
0.0100
0.0010
0.0001
-3.5
-4.0
0.0000
0.010
0.015
0.020
0.025
0.030
0.035
1/T ( 1/C )
‫( انعالقت بيه نوغاريتم معدل انتآكم‬2) ‫انشكم‬
‫( نعينت‬3%HCl) ‫ودرجت حرارة انوسط انتاكهي‬
.‫غير معامهت حراريا‬454
20
30
40
50
60
70
80
90
Tempreature ( C )
‫( انعالقت بيه انوزن انمفقود نوحدة‬1) ‫انشكم‬
(3%HCl) ‫انمساحت ودرجت حرارة انوسط انتاكهي‬
.‫نعينت غير معامهت حراريا‬
‫‪The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009‬‬
‫انشكم )‪ (3‬طبوغرافيت سطح عينت غير‬
‫معامهت حراريا بقوة تكبير )‪(600X‬‬
‫‪Zuheir Talib‬‬
‫انشكم )‪ (4‬طبوغرافيت سطح عينت غير‬
‫معامهت حراريا معرضت نوسط انتاكهي‬
‫)‪ (3%HCl‬في درجت حرارة )‪(80C°‬‬
‫بقوة تكبير )‪(600X‬‬
‫‪0.0100‬‬
‫‪-2.50‬‬
‫‪-2.75‬‬
‫) ‪Weight loss ( g/cm‬‬
‫‪0.0001‬‬
‫‪-3.25‬‬
‫‪-3.50‬‬
‫‪-3.75‬‬
‫‪0.0000‬‬
‫‪90‬‬
‫‪80‬‬
‫‪70‬‬
‫‪60‬‬
‫‪50‬‬
‫‪40‬‬
‫‪30‬‬
‫‪20‬‬
‫‪-4.00‬‬
‫‪0.03‬‬
‫‪0.04‬‬
‫) ‪Tempreature ( C‬‬
‫انشكم )‪ (5‬انعالقت بيه انوزن انمفقود نوحدة انمساحت‬
‫ودرجت حرارة انوسط انتاكهي )‪ (3%HCl‬نعينت‬
‫معامهت محهونيا بدرجت )‪(500C°‬‬
‫‪0.03‬‬
‫‪0.02‬‬
‫‪0.02‬‬
‫‪0.01‬‬
‫) ‪1/T ( C‬‬
‫انشكم )‪ (6‬انعالقت بيه نوغاريتم معدل انتآكم‬
‫ودرجت حرارة انوسط انتاكهي )‪ (3%HCl‬نعينت‬
‫معامهت محهونيا بدرجت )‪.(500C°‬‬
‫‪455‬‬
‫) ‪Log C.R ( mg/cm .hr‬‬
‫‪0.0010‬‬
‫‪-3.00‬‬
‫) ‪( AL -2Cu – 2Mg‬‬
‫انشكم )‪ (8‬طبوغرافيت سطح عينت معامهت محهونيا‬
‫بدرجت )‪ (500C°‬معرضت نوسط تآكهي )‪(3%HCl‬‬
‫في درجت حرارة)‪ (80C°‬بقوة تكبير )‪(600X‬‬
‫انشكم )‪ (7‬طبوغرافيت سطح عينت معامهت‬
‫محهونيا بدرجت )‪ (500C°‬بقوة تكبير )‪(600X‬‬
‫‪0.010‬‬
‫) ‪Weight loss ( g/cm‬‬
‫‪0.000‬‬
‫‪-2.50‬‬
‫‪-3.00‬‬
‫‪-3.50‬‬
‫‪-4.00‬‬
‫‪0.000‬‬
‫‪90‬‬
‫‪80‬‬
‫‪70‬‬
‫‪60‬‬
‫‪50‬‬
‫‪40‬‬
‫‪30‬‬
‫‪20‬‬
‫‪0.04‬‬
‫) ‪Tempreature ( C‬‬
‫انشكم )‪ (9‬انعالقت بيه انوزن انمفقود نوحدة انمساحت‬
‫ودرجت حرارة انوسط انتاكهي )‪ (3%HCl‬نعينت معتقت‬
‫اصطناعيا بدرجت )‪(170C°‬‬
‫‪0.03‬‬
‫‪0.03‬‬
‫‪0.02‬‬
‫‪0.02‬‬
‫‪0.01‬‬
‫) ‪1/T ( 1/C‬‬
‫انشكم )‪ (10‬انعالقت بيه نوغاريتم معدل انتآكم ودرجت‬
‫حرارة انوسط انتاكهي )‪ (3%HCl‬نعينت معتقت‬
‫اصطناعيا بدرجت )‪.(170C°‬‬
‫‪456‬‬
‫) ‪Log C.R ( mg/cm .hr‬‬
‫‪0.001‬‬
‫‪-2.00‬‬
‫‪The Iraqi Journal For Mechanical And Material Engineering, Vol. 9,No. 3, 2009‬‬
‫‪Zuheir Talib‬‬
‫انشكم )‪ (12‬طبوغرافيت سطح عينت معتقت اصطناعيا‬
‫بدرجت )‪ (170C°‬معرضت نوسط تآكهي )‪ (3%HCl‬في‬
‫درجت حرارة)‪ (80C°‬بقوة تكبير )‪(600X‬‬
‫انشكم )‪ (11‬طبوغرافيت سطح عينت معتقت‬
‫اصطناعيا بدرجت )‪ (170C°‬بقوة تكبير )‪(600X‬‬
‫‪-1‬‬
‫‪( 3% Hcl ) Solution‬‬
‫‪0.01‬‬
‫‪Untreated‬‬
‫‪0.00‬‬
‫‪3% Hcl solution‬‬
‫) ‪Weight Loss ( g/cm‬‬
‫‪0.00‬‬
‫‪-2‬‬
‫) ‪Artificial Aged at ( 170 C‬‬
‫‪-3‬‬
‫‪Untreated‬‬
‫) ‪Solution Heat Treated at ( 500 C‬‬
‫) ‪Artificial Aged at ( 170 C‬‬
‫‪-4‬‬
‫‪0.00‬‬
‫‪80‬‬
‫‪90‬‬
‫‪70‬‬
‫‪60‬‬
‫‪50‬‬
‫‪40‬‬
‫‪30‬‬
‫‪0.040‬‬
‫‪20‬‬
‫‪0.020‬‬
‫‪0.030‬‬
‫‪0.010‬‬
‫) ‪1/T ( C‬‬
‫) ‪Tempreature ( C‬‬
‫انشكم )‪ (13‬انعالقت بيه انوزن انمفقود نوحدة‬
‫انمساحت ودرجت حرارة انوسط انتاكهي )‪(3%HCl‬‬
‫انشكم )‪ (14‬انعالقت بيه نوغاريتم معدل انتآكم ودرجت‬
‫حرارة انوسط انتاكهي )‪. (3%HCl‬‬
‫‪.‬‬
‫‪457‬‬
‫) ‪Log C.R ( g/cm .hr‬‬
‫) ‪Solution Heat Treated at ( 500 C‬‬
( AL -2Cu – 2Mg )
458