A vanadium-based conversion coating as chromate replacement for electrogalvanized steel substrates

2011 ◽  
Vol 509 (2) ◽  
pp. 503-507 ◽  
Author(s):  
Zhongli Zou ◽  
Ning Li ◽  
Deyu Li ◽  
Haiping Liu ◽  
Songlin Mu
Keyword(s):  
Conversion Coating ◽  
Electrogalvanized Steel ◽  
Steel Substrates ◽  
Chromate Replacement

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

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

Development of environmentally friendly nonchrome conversion coating for electrogalvanized steel

2004 ◽  
Vol 188-189 ◽  
pp. 762-767 ◽  
Author(s):  
Hyung-Joon Kim ◽  
Jinming Zhang ◽  
Roe-Hoan Yoon ◽  
Richard Gandour
Keyword(s):  
Environmentally Friendly ◽  
Conversion Coating ◽  
Electrogalvanized Steel

Influence of magnetron sputtering conditions on the parameters of TiN coatings on steel substrates

2006 ◽  
Vol 2006 (suppl_23_2006) ◽  
pp. 269-274 ◽  
Author(s):  
R. Mirchev ◽  
V. Antonov ◽  
I. Iordanova ◽  
P. J. Kelly
Keyword(s):  
Magnetron Sputtering ◽  
Tin Coatings ◽  
Steel Substrates

Adhesive Strength of Cobalt-Alloy Coatings Applied by Laser Surfacing on Structural-Steel Substrates

2020 ◽  
Vol 40 (10) ◽  
pp. 882-884
Author(s):  
A. V. Shafranov ◽  
E. A. Morozov ◽  
K. R. Muratov ◽  
A. A. Drozdov ◽  
A. N. Yurchenko
Keyword(s):  
Structural Steel ◽  
Adhesive Strength ◽  
Cobalt Alloy ◽  
Laser Surfacing ◽  
Steel Substrates
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