Improving Bond Strenght between Carbon Steel and Plasma Sprayed Ceramics by Phosphating Process

0377717 - ÚFP 2013 RIV CZ eng C - Conference Paper (international conference)
Pokorný, P. - Brožek, Vlastimil - Mastný, L.
Improving Bond Strenght between Carbon Steel and Plasma Sprayed Ceramics by Phosphating Process.
METAL 2012 Conference Proceedings. Ostrava: TANGER Ltd. Ostrava, 2012, s. 69-70. ISBN 978-80-87294-31-4.
[International Conference on Metallurgy and Materials METAL 2012/21./. Brno (CZ), 23.05.2012-25.05.2012]
Institutional research plan: CEZ:AV0Z20430508
Keywords : surface treatments * phosphating coatings * bond strenght * plasma spraying * ceramic coatings
Subject RIV: CA - Inorganic Chemistry

Phosphating is currently the highest standard of surface treatment before painting in the vehicle industry. Excluded phosphate crystal layer is due to its high porosity absorbing not only paints but also oil and lubricants that can reliably maintain the surface. Improved bond strenght in the case of coatings exposed in the humid atmospheres in comparison with multiple non-coated surface. Focus of this work is an effort to improve the bond strenght between the diferent plasma-sprayed coatings materials and carbon steel using different phosphate coatings. Because most of the eliminated phosphate crystallizes with four crystal waters the samples was covered by zinc-calcium phosphate, which crystallizes with only two waters [scholzite: Zn2Ca(PO4)2 . 2H2O] and coated from bath of „three-cationts“ phosphate due to the large thickness of the coating and compaction [fosfofylit: Zn2Fe(PO4)2 . 4 H2O]. They decided test for measuring the quality of bond strebght between coating and steel
Permanent Link: http://hdl.handle.net/11104/0209809