Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(1), 203-210 | DOI: 10.11118/actaun201866010203

Effect of Quench Environment on the Conversion Coatings on Magnesium Alloy AZ91

Barbora Ševčíková1, Stanislava Fintová2, Jaromír Wasserbauer1, Jakub Tkacz1
1 Materials research Centre by Faculty of Chemistry, Brno University of Technology, 612 00 Brno, Purkyňova 464/118, 602 00 Brno, Czech Republic
2 Institute of Physics of Materials of the Academy of Sciences of the Czech Republic, v.v.i., Žižkova 22, 616 62 Brno, Czech Republic

The aim of the study is to achieve fine microstructure of AZ91, due to the optimized heat treatment processes, which can be easily coated with a normal conversion process as phosphating. Determination of the influence of the AZ91 microstructure, mainly precipitates which are created using different cooling media during the heat treatment and definition of the best heat treatment process parameters are the main experimental sections of the work. The structure of the samples heat treated under different conditions was subsequently compared with the structure of the as cast state of AZ91. The morphology of the conversion coating was studied by scanning electron microscopy (SEM) and amount of individual elements in the deposited coating was determined by EDS analysis.

Keywords: magnesium alloys, AZ91, conversion coating, precipitation hardening, cryogenic treatment, EDS analysis, SEM mapping
Grants and funding:

This work was supported by the project "Materials Research Centre at FCH BUT - Sustainability and Development", REG LO1211, with financial support from National Programme for Sustainability I (Ministry of Education, Youth and Sports), Czech Republic.

Prepublished online: February 28, 2018; Published: September 1, 2018  Show citation

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Ševčíková, B., Fintová, S., Wasserbauer, J., & Tkacz, J. (2018). Effect of Quench Environment on the Conversion Coatings on Magnesium Alloy AZ91. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 66(1), 203-210. doi: 10.11118/actaun201866010203
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