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Thermal oxidation resistance of quaternary TiAlCrN coatings prepared with cathodic arc evaporation

Thermal oxidation resistance of quaternary TiAlCrN coatings prepared with cathodic arc evaporation In this research, Cr-Al-Ti-N coatings on SKH 51 tool steel were prepared using a cathodic arc evaporation technique. The quaternary (CrxAl1−xTi0.15) N coating with the x value between 0.20 and 0.60 were studied in comparison to the TiAlN coating. The morphology of the surface coating was examined in cross-section using an optical microscope and field emission scanning electron microscope. Micro Vickers Hardness was used to measure the mechanical properties of the coating. Phase analysis was conducted using x-ray diffraction. The oxidation resistance of the coating was evaluated in ambient air at different temperatures up to 1100 °C. It was found the difference in chemical composition of the coating plays an important role on the quality of its microstructure, hardness, and oxidation resistance. The AlTiN coating showed a smooth surface and columnar structure, whereas micro-particles are observed on CrTiAlN-coated surfaces. The high Cr content in Cr-Al-Ti-N coatings indicates a high hardness value of 3284 HV and high oxidation resistance of up to 1000 °C. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Australian Ceramic Society Springer Journals

Thermal oxidation resistance of quaternary TiAlCrN coatings prepared with cathodic arc evaporation

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Publisher
Springer Journals
Copyright
Copyright © Australian Ceramic Society 2021
ISSN
2510-1560
eISSN
2510-1579
DOI
10.1007/s41779-021-00617-x
Publisher site
See Article on Publisher Site

Abstract

In this research, Cr-Al-Ti-N coatings on SKH 51 tool steel were prepared using a cathodic arc evaporation technique. The quaternary (CrxAl1−xTi0.15) N coating with the x value between 0.20 and 0.60 were studied in comparison to the TiAlN coating. The morphology of the surface coating was examined in cross-section using an optical microscope and field emission scanning electron microscope. Micro Vickers Hardness was used to measure the mechanical properties of the coating. Phase analysis was conducted using x-ray diffraction. The oxidation resistance of the coating was evaluated in ambient air at different temperatures up to 1100 °C. It was found the difference in chemical composition of the coating plays an important role on the quality of its microstructure, hardness, and oxidation resistance. The AlTiN coating showed a smooth surface and columnar structure, whereas micro-particles are observed on CrTiAlN-coated surfaces. The high Cr content in Cr-Al-Ti-N coatings indicates a high hardness value of 3284 HV and high oxidation resistance of up to 1000 °C.

Journal

Journal of the Australian Ceramic SocietySpringer Journals

Published: Sep 1, 2021

Keywords: Oxidation resistance; CrAlTiN coating; Cathodic arc evaporation

References