Abstract
Samples of tinplate passivated by a cathodic dichromate treatment have been analysed by photo-electron spectroscopy to determine the nature of the chromium on the surface. This has confirmed the presence of chromium metal which appears to be present in discrete regions rather than as a continuous film. The entire surface composed of exposed tin and regions of chromium metal is shown to be covered with trivalent chromium compounds. The X-ray Photoelectron Spectroscopy results are consistent with other models postulated from anodic polarisation work which suggests that a Cr(OH)3 overlayer is present with some Cr2O3 underneath formed by air oxidation of chromium metal.
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References
1.
Britton
S. C.
, Br. Corros. J. , 1965 , 1 , 91
2.
Aubrun
P. L.
, &
Rocquet
P.
Corrosion-Traitements, Protectior, Finition , 1968 , 16 , 229
3.
Rocquet
P.
, &
Aubrun
P L.
.Br. Corros. J. , 1970 , 5, 193
4.
Rauch
S. E.
, &
Steinbicker
R.
N., J. electrochem. Soc .; 1973 , 120 , 735
5.
Rauch
S. E.
& Steinbicker, R. N. , Plating , 1975 (March), 246
6.
Britton
S. C.
, Br. Corros. J. , 1975 , 10 , 85
7.‘Handbook of Chemistry and Physics’. 1964 (Cleveland, Ohio : The Chemical Rubber Co .)
8.‘Powder Diffraction File’, pub. by Joint Committee on Powder Diffraction Standards, Philadelphia , 1974
9.
Rivière
J C.
.Contemporary Phys. , 1973 , 14, 513
10.
Wagner
C. D.
, Analyt. Chem. , 1972 , 44 , 1050
11.
Jorgensen
C. K.
, &
Berthou
H.
Trans. Faraday Disc. , 1972 , 54 , 269
12.
Nefedov
V.
1., Sergushin, N. P., Band, I. M., & Trzharkovskaya, M. B. , J. Electron Spectr. , 1973 , 2, 383
13.
Siegbahn
K.
, et al., ‘ESCA—Atomic Molecular and Solid State Structure Studied by means of Electron Spectroscopy’. 1967 (Stockholm : Almqvist & Wiksells )
14.
Kanaya
K.
,
Hojou
K.
,
Koga
K.
, &
Toki
K.
Jap. J. appl. Phys. , 1973 , 12 , 1297
15.
Kim
K. S.
,
Baitinger
W. E.
,
Amy
J. W.
, &
Winograd
N.
J. Electron Spectr. , 1974 , 5 , 351