Investigation of the Trivalent Chromium Process Conversion Coating as a Sealant for Anodized AA2024-T3

2020 ◽  
Vol 167 (11) ◽  
pp. 111504
Author(s):  
T. K. Shruthi ◽  
Jack Walton ◽  
Sarah McFall-Boegeman ◽  
Sjon Westre ◽  
Greg M. Swain
Keyword(s):  
Trivalent Chromium ◽  
Conversion Coating

scholarly journals Trivalent chromium conversion coating formation on aluminium

2015 ◽  
Vol 280 ◽  
pp. 317-329 ◽  
Author(s):  
J.-T. Qi ◽  
T. Hashimoto ◽  
J.R. Walton ◽  
X. Zhou ◽  
P. Skeldon ◽  
...  
Keyword(s):  
Trivalent Chromium ◽  
Conversion Coating ◽  
Coating Formation

Evaluation of a Trivalent Chromium Process (TCP) Conversion Coating on AA2024-T3 That Requires No Surface Pretreatment

2019 ◽  
Vol 166 (15) ◽  
pp. C589-C599 ◽  
Author(s):  
Jack Walton ◽  
T. K. Shruthi ◽  
David Yancey ◽  
Paul Vlasak ◽  
Sjon Westre ◽  
...  
Keyword(s):  
Trivalent Chromium ◽  
Conversion Coating ◽  
Surface Pretreatment

Corrosion Behavior of Rare Earth Cerium Based Trivalent Chromium Conversion Coating on Zinc

2014 ◽  
Vol 881-883 ◽  
pp. 1165-1170 ◽  
Author(s):  
Shu Ting Miao ◽  
Sheng Han ◽  
Lifeng Hao
Keyword(s):  
Electron Microscopy ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
Electrochemical Method ◽  
Trivalent Chromium ◽  
Conversion Coating ◽  
Passivation Film ◽  
Good Corrosion Resistance ◽  
Scanning Electron ◽  
Cerium Hydroxide

The present paper focused on the use of the salt of rare earth cerium as corrosion inhibitor of Zinc by using cathodic electrolytic passivation method. The corrosion resistance and the microphology of the cerium passivation film were studied by the methods of electrochemical method, scanning electron microscopy (SEM). From the results, it was shown that good corrosion resistance of cerium-based trivalent chromium conversion coating was obtained when the compositions were as follows: Ce (SO4)2, 6g/L; Cr2(SO4)3, 18.9g/L and NaNO3; current density, 2A/dm2; temperature, 40 oC; time, 60s. SEM revealed that the cerium trivalent chromium conversion coatings formed uniform cerium hydroxide and chrimuim hydroxide deposition on the surface of Zinc.

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