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994 45
---
7,00062001 (GDP)3.5%4.2%3.5%3%4%30%
()(SO2)
ISO 12944-2 (1)
ISO 12944-2C5
46 17 3
C5C5
2006
10,00020097,0002530%0.5
/
g/(m2yr)
m
g/(m2yr)
m
C1 10 1.3 0.7 0.1
C2 10-200 1.3-25 0.7-5 0.1-0.7 ()
C3 200-400 25-50 5-15 0.7-2.1
C4 400-650 50-80 15-30 2.1-4.2
C5-I
() 650-1500 80-200 30-60 4.2-8.4
()
C5-M
() 650-1500 80-200 30-60 4.2-8.4 ()
994 47
()
xMOOM + 2 (
)Electro-motive force
( ) KnFRTEE ln0 =
1.
2.
3.
4.
()
/
/
2
48 17 3
1.
Osmotic Blistering Electroend osmotic
()/Osmotic Blistering
Electroendosmotic
()()
Osmotic blistering Electroendosmotic
2
/
()()
0.025~0.05g/ (day m2 mmHg)
1. 2.
1. 2. 3.
1. 2.
3.
1. 2.
3.
4.
1.
2.
1. 2. 3.
994 49
2.
Protective Coatings : Fundamentals of Chemistry and Composition3~60g/(cm2day)20~350g/(cm2day)
20g/(cm2day)73 g/(m2yr) 10.95 g/(m2yr) Case A250g/(cm2day)1277.5 g/(m2yr)219 g/(m2yr) Case BCase ABISO 12944-2 Case AC2Case BC5
ISO 12944-2 C1Case A
)daycm/(g41.0
)yrm/(g73
)daycm/(g3)yrm/(g10
2
2
22
=
(100m@23~25)
100m(@23~25)1,000~5,000g/ (cm2day)6667g/(cm2day)24.3 kg/(m2yr)
)daycm/(g7.6666
)daym/(g3
)daycm/(g20)daycm/(m1000
2
2
22
=
C5(>80.7%)65 %100m
ISO C1
ISO 12944-2 C1
100m Epoxy/coaltar
100m Epoxy/coaltar(@23~25)
50 17 3
3.
(1) ()Faraday s law11
=zM
FQm
(2) Fick s 2nd lawISO 12944-2 C2 (0.41~8.22 g/ (cm2day))1mmEpoxy/coal tar
m1103
)m100()daym/(g22.8
)daycm/(g100 21
2
2
2
=
20
C1 g/(m2yr) goorr 10 goorr0.7C2 g/(m2yr) 10
994 51
C5+PU
SSPC-SP-1025~75mm
(JIS K5657) 25m 2 72
(JIS K5657) 2000m 1 24
(JIS K5657) 30m 8
10
(JIS K5657) 30m ---
SIS St3(SSPC-SP-3)
/
C1 g/(m2yr) goorr0.7 C2 g/(m2yr) 0.7
52 17 3
C5+
60mSM/Rz 3 (1)
100m 410 -
-- --
(CNS 4938)(CNS 4935)
100m 12
( 2) (JIS K5659) 30m 810
30m --
SIS St3 (SSPC-SP-3)