Quality Evaluation of HVOF Coatings on the Basis of WC-Co in Tribocorrosive Conditions

Janette Brezinová; Anna Guzanová; Dagmar Draganovská; Jozef Bronček

doi:10.4028/www.scientific.net/MSF.811.63

Paper Titles

Corrosion Protection of Infrastructure of Power Industry
p.31

Corrosion Degradation of Steel Pipes in Indirect Cooling Circuit of Gas Cleaning
p.41

Atmosphere Aggressivity State Mapping in Slovak Republic for Corrosion of Construction Materials
p.49

Influence of Anodic Oxidation on the Polarization Resistance of Ti6Al4V Alloy after Shot Peening
p.59

Quality Evaluation of HVOF Coatings on the Basis of WC-Co in Tribocorrosive Conditions
p.63

Effect of Surface Treatment by DCPD Coating on Corrosion Resistance of Magnesium Alloy Elektron 21
p.67

Influence of Temperature on the Electrochemical Characteristics of Ti-6Al-4V
p.77

The Corrosion Properties of EN AW 7075 Aluminium Alloy in Power Industry
p.83

BLEVE - Cases, Causes, Consequences and Prevention
p.91

HomeMaterials Science ForumMaterials Science Forum Vol. 811Quality Evaluation of HVOF Coatings on the Basis...

Quality Evaluation of HVOF Coatings on the Basis of WC-Co in Tribocorrosive Conditions

Abstract:

Article deals with analysis of production and characteristics of ceramic coatings applied using HVOF technology. It presents the results of research focused on quality evaluation of HVOF coatings on the basis of WC-Co and impact of Boron Nitride protective layer. HVOF coatings were exposed to hard tribocorrosive conditions. For determining of corrosive resistance of coatings 1M solution of NaCl, potentiodynamic tests and accelerated salt spray test were used. Experiment confirmed that using of Boron Nitride protective coating clearly improves corrosive resistance of the coating on the basis of WC-Co even in hard combined tribocorrosive conditions. Protective layer seals the pores in the structure of coating and thus prevents the formation of corrosion and subsequent depreciation of coating in various corrosive environments. Using of protective layer thus improves lifetime and reliability of spraying and the part itself. Improved lifetime positively influences also the economics of the operation of energetic equipment in which these coating are used.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 811)

Pages:

63-66

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.811.63

Citation:

Cite this paper

Online since:

December 2014

Authors:

Janette Brezinová*, Anna Guzanová, Dagmar Draganovská, Jozef Bronček

Keywords:

Boron Nitride, Corrosion, HVOF Coating, Wear

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] M. Oksa, E. Turunen, T. Varis, Sealing of thermally sprayed coatings, Surf. Eng. 20 (2004) 251-254.

DOI: 10.1179/026708404225016346

Google Scholar

[2] J. Tuominen, P. Vouristo, T. Mäntylä, S. Ahmaniemi, J. Vihinen, P.H. Andersson, Corrosion Properties of HVOF Sprayed and Nd-YAG Laser Remelted High-Chromium Nickel-Chromium Coatings, in: C.C. Berndt, K.A. Khor, E.F. Lugscheider (Eds. ), Thermal spray 2001: new surfaces for a new millennium, 2001; Materials Park, OH, ASM International.

DOI: 10.31399/asm.cp.itsc2001p1203

Google Scholar

[3] P. Serra, J.M. Miguel, J.L. Morenza, J.M. Guilemany, Structural characterization of laser-treated Cr3C2–NiCr coatings, J. Mater. Res., 16 (2001) 3416–3422.

DOI: 10.1557/jmr.2001.0470

Google Scholar

[4] Metrohm, Autolab B.V., Corrosion: Part 2 – Measurement of Corrosion Rates , [cit 2014-6-30]. Available on the internet: http: /www. ecochemie. nl/download/Applicationnotes/ Autolab_Application_Note_COR02. pdf.

Google Scholar

[5] J. Vrátná, B. Hadzima, M. Bukovina, M. Janecek, Room temperature corrosion properties of AZ31 magnesium alloy processed by extrusion and equal channel angular pressing, J. Mater. Sci. 48 (2013) 4510-4516.

DOI: 10.1007/s10853-013-7173-4

Google Scholar

[6] L. Bukovinova, B. Hadzima, Electrochemical characteristics of magnesium alloy AZ31 in Hank's solution, Corr. Eng. Sci. Technol. 47 (2012) 352-357.

Google Scholar