Generation of protective ceramic coatings on magnesium by laser treatment of Al₂O₃/ZrO₂ filled organosilazane

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00008030
URN to cite this document: urn:nbn:de:bvb:703-epub-8030-0

Title data

Horcher, Alexander ; Tangermann-Gerk, Katja ; Krenkel, Walter ; Schmidt, Michael ; Schafföner, Stefan ; Motz, Günter:
Generation of protective ceramic coatings on magnesium by laser treatment of Al₂O₃/ZrO₂ filled organosilazane.
In: Journal of the European Ceramic Society. Vol. 44 (2024) Issue 11 . - pp. 6607-6619.
ISSN 0955-2219
DOI der Verlagsversion: https://doi.org/10.1016/j.jeurceramsoc.2024.04.054

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Project information

Project financing:	Deutsche Forschungsgemeinschaft

Abstract

Protective ceramic coatings are frequently the most common solutions for problems like corrosion and wear. Polymer derived ceramics technology is suitable for the preparation of ceramic coatings by pyrolysis in a furnace but requires high temperatures for the ceramization. To overcome this restriction a Nd:YVO₄ laser (λ = 1064 nm) as energy source was used to process a novel ceramic coating system composed of an organosilazane with zirconia and alumina particles specially to protect magnesium. The resulting dense ceramic coating with a thickness up to 20 µm exhibits very good adhesion (25.9 ± 2.7 MPa) to the magnesium substrate, exceptionally high hardness (19.79 ± 1.90 GPa), an outstanding thermal shock stability but also a low coefficient of friction (0.21 ± 0.02) and a very good wear protection towards a SiC counter body. Furthermore, the coating protects the magnesium substrate effectively against corrosion (5 wt aqueous NaCl solution).

Further data

Item Type:	Article in a journal
Keywords:	Laser pyrolysis; Protective ceramic coatings; Magnesium substrate; Mechanical; Properties; Adhesion
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Faculties > Faculty of Engineering Science > Former Professors > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Walter Krenkel Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Former Professors Faculties > Faculty of Engineering Science > Chair Ceramic Materials
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-8030-0
Date Deposited:	21 Oct 2024 06:14
Last Modified:	21 Oct 2024 06:14
URI:	https://epub.uni-bayreuth.de/id/eprint/8030

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