Abstract
A study of the factors influencing lead patination is reported. Raman spectroscopy has been used to determine the composition of patinas, while weight gain measurements and scanning electron microscopy have followed their physical development. The mechanism of the pati nation process follows a route during which the initially formed oxide film converts to a basic lead carbonate (hydrocerussite, 2PbCO3. Pb(OH)2), which, under the influence of sulphur dioxide, ultimately forms lead sulphate, via intermediate tetrabasic lead sulphate and lead sulphite phases. Levels of atmospheric pollution were observed to play an important role in the rate of formation of the stable end product.
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References
1.
Graedel
T. E.
: J. Electrochem. Soc. , 1994 , 141 , (4 ), 922 –926 .
2.
Tranter
G. C.
: Br. Corros. J. , 1976 , 2 , (4 ), 222 –224 .
3.
Vernon
W. H. J.
: Trans. Faraday Soc. , 1927 , 23 , 113 .
4.
Falk
L.
: Chemiker Z. , 1910 , 34 , 567 .
5.
Efimov
I. A.
,
RYBAKOV
B. N.
,
MASLOVA
G. B.
, and
KHARITONOV
Y. Y.
Zashch. Met. , 1971 , 8 , (6 ), 711 –712 .
6.
Hill
R. H.
,
FROST
P. C.
, and
SMITH
R.
Proc. Pb80: 7th Int. Lead Conf. , 194 –203 ; 1980 , London , Lead Development Association .
7.
Palraj
S.
,
SUBRAMANIAN
G.
,
ANANTH
G.
, and
SUDARAM
M.
Bull. Electrochem. , 1995 , 11 , (8 ), 361 –365 .
8.
Persson
D.
and
LEYGRAF
C.
J. Electrochem. Soc. , 1995 , 142 , (5 ), 1468 –1477 .
9.
Odnevall
I.
and
LEYGRAF
C.
J. Electrochem. Soc. , 1991 , 138 , (7 ), 1923 –1928 .
10.
Yamashita
M.
,
MIYUKI
H.
,
MATSUDA
Y.
,
NAGANO
H.
, and
MISAWA
T.
Corros. Sci. , 1994 , 36 , (2 ), 283 –299 .
11.
Persson
D.
and
LEYGRAF
C.
J. Electrochem. Soc. , 1992 , 139 , (8 ), 2243 –2245 .
12.
Taqi
E. A.
and
AL-MADAM
H.
COITOS. Prey. Control , 1994 , 41 , (3 ), 68 –72 .
13.
Bullock
K. R.
: J. Electroanal. Chem. , 1987 , 222 , 347 –366 .
14.
Black
L.
,
ALLEN
G. C.
, and
FROST
P. C.
Appl. Spectrosc. , 1995 , 49 , (9 ), 1299 –1304 .
15.
Trettenhahn
G. L. J.
,
NAUER
G. E.
, and
NECKEL
A.
Vib. Spectrosc. , 1993 , 5 , (1 ), 85 –100 .
16.
Lutz
H. D.
and
EL SURADI
S.
Z. Anorg. Allg. Chem. , 1976 , 425 , 134 .
17.
Lutz
H. D.
,
BUCHMEIER
W.
,
ECKERS
W.
, and
ENGELEN
B.
Z. Anorg. Allg. Chem. , 1983 , 496 , 21 –28 .
18.
Kumar
C. V. R. V.
,
PASCAUL
R.
, and
SAYER
M.
J. Appl. Phys. , 1992 , 71 , (2 ), 864 –874 .
19.
Greninger
D.
: in ‘Lead chemicals’ , 1975 , New York , International Lead Zinc Research Organization Inc. (ILZRO ).
20.
Yamaguchi
J.
,
SAWADA
Y.
,
SAKURAI
O.
,
UEMATSU
K.
,
MIZUTANI
N.
, and
KATO
M.
Thermochim. Acta , 1980 , 37 , 79 .