Microstructure of Trivalent Chromium Conversion Coating on Electrogalvanized Steel Plate

2008 ◽  
Vol 11 (8) ◽  
pp. C47 ◽  
Author(s):  
N. T. Wen ◽  
F. J. Chen ◽  
M. D. Ger ◽  
Y. N. Pan ◽  
C. S. Lin
Keyword(s):  
Steel Plate ◽  
Trivalent Chromium ◽  
Conversion Coating ◽  
Electrogalvanized Steel

scholarly journals A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel

2014 ◽  
Vol 258 ◽  
pp. 426-436 ◽  
Author(s):  
A.R. Di Sarli ◽  
J.D. Culcasi ◽  
C.R. Tomachuk ◽  
C.I. Elsner ◽  
J.M. Ferreira-Jr ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Trivalent Chromium ◽  
Electrogalvanized Steel

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 the Growth Mechanism of Ti-Containing Conversion Coatings Using XPS

2015 ◽  
Vol 227 ◽  
pp. 159-162 ◽  
Author(s):  
Wlodzimierz Tylus ◽  
Juliusz Winiarski ◽  
Bogdan Szczygieł
Keyword(s):  
Chemical Composition ◽  
Deposition Time ◽  
Fold Increase ◽  
Weak Acid ◽  
Conversion Coating ◽  
Mechanical Resistance ◽  
Time Interval ◽  
Conversion Coatings ◽  
Electrogalvanized Steel ◽  
Mechanical Properties And Corrosion

Ti-containing coatings as chromate replacement were prepared on electrogalvanized steel. Zinc coatings were deposited from a weak acid chloride bath. Cr-free conversion coatings were deposited from bath composed of: TiCl3, H2SiF6, H2O2 and oxalic acid. XPS was used to evaluate chemical composition of the coatings as a function of deposition time. Deposited coating were of conversion type. Regardless of the achieved conversion coating thickness, Zn from the substrate was always present. In the coatings were identified: Zn2SiO4 / Zn4Si2O7(OH)2, ZnTiO3, ZnO, Zn (OH)2, Zn0, SiOx and Ti-O-Si in varying proportions. The chemical composition of the outer surface of the coating depended on deposition time, e.g. in a time interval 0-300 s 30 fold increase of the Si:Ti ratio and 20 fold of the Si:Zn ratio were observed. Estimated thickness of conversion coating was 3, 14, 35, and 100 nm for the time deposition of 1, 40, 80 and 300 s respectively. It is the proposed model for distinguishing Zn (0) phase from Zn (2+) quantitatively, based on the Zn L3M45M45 spectrum. The composition of the ZnTiSi conversion coating determined its mechanical properties and corrosion resistance. Standard tests carried out showed that the coatings obtained at the time of 20-40 s had the best corrosion performance and mechanical resistance

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
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