Microstructures, phase and mechanical characterisation of Al2O3-ZrO2-TiO2 coating produced by atmospheric plasma spraying

The microstructure, crystallographic phases, and mechanical properties of a newly developed Al_{2_{O_{3_{– TiO_{2_{– ZrO_{2_{ternary ceramic coating were characterized. The coatings were produced by atmospheric plasma spraying as a preblended powder on Ti-_{6_{Al-_{4_{V substrates using the new generation of the Debye-Larmor cascaded plasma torch. The 400 μm thick as-sprayed ternary ceramic coating is compact and neither delamination nor inter-/trans-granular cracks were found. The coating consists of single phase α-Al_{2_{O_{3_{, monoclinic m-ZrO_{2_{, and a nanocrystalline dual phase structure of α-Al_{2_{O_{3_{and m-ZrO_{2_{. Ti is either present as ZrTiO_{4_{or as solute in the dual phase. Cracking from the tip of the indent is rare and delamination was not observed after the progressive scratch test. The coating has potential in high wear applications for example in medical devices.}}}}}}}}}}}}}}}}}}}}}}}}}}

Keywords

Ultrahigh temperature ceramics (UHTCs), Ultrahigh temperature composites (UHTCMCs), Ternary oxide coating, Atmospheric plasma spraying, Cascade plasma torch

Subject (DDC)

610 - Medizin und Gesundheit

Project

Event

Exhibition start date

Exhibition end date

Conference start date

Conference end date

Date of the last check

ISBN

ISSN

2666-5395

Language

English

Created during FHNW affiliation

Yes

Strategic action fields FHNW

Publication status

Published

Review

Peer review of the complete publication

Open access category

Gold

License

Citation

Chang, C. S. T., Wyss, M., Andrzejewski, M., Darut, G., Graf, L., Novak, V., Olbinado, M., Erpel, S., Vogel, A., Bode, S., de Wild, M., & Salito, A. (2024). Microstructures, phase and mechanical characterisation of Al2O3-ZrO2-TiO2 coating produced by atmospheric plasma spraying. Open Ceramics, 20, 100698. https://doi.org/10.1016/j.oceram.2024.100698

Full item page