Fabrication and characterisation of porous, calcium enriched coatings on titanium after plasma electrolytic oxidation under DC regime

• Autorzy: Rokosz K. , Hryniewicz T. , Pietrzak K. , Sadlak P. , Valíček J.

Identyfikatory

DOI

10.1515/adms-2017-0021

• Języki publikacji: EN

Abstrakty

EN

The purpose of this work is to produce and characterize (chemical composition and roughness parameters) porous coatings enriched in calcium and phosphorus on the titanium (CP Titanium Grade 2) by plasma electrolytic oxidation. As an electrolyte, a mixture of phosphoric acid H3PO4 and calcium nitrate Ca(NO3)2·4H2O was used. Based on obtained EDS and roughness results of PEO coatings, the effect of PEO voltages on the chemical composition and surface roughness of porous coatings was determined. With voltage increasing from 450 V to 650 V, the calcium in PEO coatings obtained in freshly prepared electrolyte was also found to increase. In addition, the Ca/P ratio increased linearly with voltage increasing according to the formula Ca/P = 0.035·U+0.176 (by wt%) and Ca/P = 0.03·U+0.13 (by at%). It was also noticed that the surface roughness increases with the voltage increasing, what is related to the change in coating porosity, i.e. the higher is the surface roughness, the bigger are pores sizes obtained.

Słowa kluczowe

EN

Plasma Electrolytic Oxidation; PEO; micro arc oxidation; MAO; SEM; titanium; porous coatings; concentrated phosphoric acid H3PO4; calcium nitrate Ca(NO3)2·4H2O

PL

plazmowe utlenianie elektrolityczne; PEO; Micro Arc Oxidation; MAO; SEM; tytan; powłoki porowate; stężony kwas fosforowy H3PO4; azotan wapnia Ca (NO3) 2 · 4H2O

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2017
• Tom: Vol. 17, nr 4(54)
• Strony: 55--67
• Opis fizyczny: Bibliogr. 23 poz., rys., wykr.

Twórcy

autor

Rokosz K.

• Koszalin University of Technology, Faculty of Mechanical Engineering, Department of En-gineering and Informatics Systems, Division of Bioengineering and Surface Electrochemistry, Racławicka 15-17, 75-620 Koszalin, Poland

autor

Hryniewicz T.

• Koszalin University of Technology, Faculty of Mechanical Engineering, Department of En-gineering and Informatics Systems, Division of Bioengineering and Surface Electrochemistry, Racławicka 15-17, 75-620 Koszalin, Poland

autor

Pietrzak K.

• Koszalin University of Technology, Faculty of Mechanical Engineering, Department of En-gineering and Informatics Systems, Division of Bioengineering and Surface Electrochemistry, Racławicka 15-17, 75-620 Koszalin, Poland

autor

Sadlak P.

• Koszalin University of Technology, Faculty of Mechanical Engineering, Department of En-gineering and Informatics Systems, Division of Bioengineering and Surface Electrochemistry, Racławicka 15-17, 75-620 Koszalin, Poland

autor

Valíček J.

• Institute of Physics, Faculty of Mining and Geology, VŠB—Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic

Bibliografia

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