Publication detail

The importance of ammonium and potassium ions under hydrothermal preparation conditions on the structure and corrosion properties of CaP coatings

BUCHTÍK, M. HASOŇOVÁ, M. BŘEZINA, M. MÁSILKO, J. KAJÁNEK, D. ŠVEC, J. SEDLAČÍK, M. WASSERBAUER, J. DOSKOČIL, L.

Original Title

The importance of ammonium and potassium ions under hydrothermal preparation conditions on the structure and corrosion properties of CaP coatings

Type

journal article in Web of Science

Language

English

Original Abstract

CaP coatings were hydrothermally deposited on the AZ31 magnesium alloy in rection mixture containing ammonium or potassium ions. CaP coatings were deposited on AZ31 alloy in reaction mixture at pH 5 and 7 with and without EDTA chelating agent. It was found that the ammonium ions present have a negative effect on the quality of the CaP coating deposited from mixture at pH 7 and their presence at neutral environment results in the formation of structural defects in the coatings. At the same time, the presence of ammonium ions suppresses hydrolysis and crystallization of OCP and HAp. However, pH and the presence of EDTA have a more pronounced effect on the structure and phase composition. The coatings deposited in the reaction mixture, containing potassium-based precursors and EDTA, at pH 7 showed the best thermal stability due to the majority of HAp phase. The uniform CaP coating deposited in the reaction mixture containing EDTA and K+ ions at pH 7 also achieved the best corrosion properties due to the absence of structural defects and dense structure.

Keywords

AZ31 magnesium alloy; Calcium phosphate coatings; Hydroxyapatite; Potentiodynamic polarization; Thermal analysis

Authors

BUCHTÍK, M.; HASOŇOVÁ, M.; BŘEZINA, M.; MÁSILKO, J.; KAJÁNEK, D.; ŠVEC, J.; SEDLAČÍK, M.; WASSERBAUER, J.; DOSKOČIL, L.

Released

14. 2. 2025

Publisher

Elsevier

ISBN

1873-3956

Periodical

CERAMICS INTERNATIONAL

Year of study

51

Number

5

State

United Kingdom of Great Britain and Northern Ireland

Pages from

5544

Pages to

5556

Pages count

13

URL

https://www.sciencedirect.com/science/article/pii/S0272884224013166

BibTex

@article{BUT189553,
  author="Martin {Buchtík} and Michaela {Hasoňová} and Matěj {Březina} and Jiří {Másilko} and Daniel {Kajánek} and Jiří {Švec} and Martin {Sedlačík} and Jaromír {Wasserbauer} and Leoš {Doskočil}",
  title="The importance of ammonium and potassium ions under hydrothermal preparation conditions on the structure and corrosion properties of CaP coatings",
  journal="CERAMICS INTERNATIONAL",
  year="2025",
  volume="51",
  number="5",
  pages="5544--5556",
  doi="10.1016/j.ceramint.2024.03.348",
  issn="1873-3956",
  url="https://www.sciencedirect.com/science/article/pii/S0272884224013166"
}