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Article

Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS

1
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
2
School of Materials Science & Engineering, Harbin Institute of Technology, Harbin 150001, China
*
Author to whom correspondence should be addressed.
Academic Editor: Helmut Riedl
Materials 2021, 14(4), 826; https://doi.org/10.3390/ma14040826
Received: 30 December 2020 / Revised: 1 February 2021 / Accepted: 2 February 2021 / Published: 9 February 2021
The high-power impulse magnetron sputtering (HiPIMS) technique is widely used owing to the high degree of ionization and the ability to synthesize high-quality coatings with a dense structure and smooth morphology. However, limited efforts have been made in the deposition of MAX phase coatings through HiPIMS compared with direct current magnetron sputtering (DCMS), and tailoring of the coatings’ properties by process parameters such as pulse width and frequency is lacking. In this study, the Cr2AlC MAX phase coatings are deposited through HiPIMS on network structured TiBw/Ti6Al4V composite. A comparative study was made to investigate the effect of average power by varying frequency (1.2–1.6 kHz) and pulse width (20–60 μs) on the deposition rate, microstructure, crystal orientation, and current waveforms of Cr2AlC MAX phase coatings. X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM) were used to characterize the deposited coatings. The influence of pulse width was more profound than the frequency in increasing the average power of HiPIMS. The XRD results showed that ex situ annealing converted amorphous Cr-Al-C coatings into polycrystalline Cr2AlC MAX phase. It was noticed that the deposition rate, gas temperature, and roughness of Cr2AlC coatings depend on the average power, and the deposition rate increased from 16.5 to 56.3 nm/min. Moreover, the Cr2AlC MAX phase coatings produced by HiPIMS exhibits the improved hardness and modulus of 19.7 GPa and 286 GPa, with excellent fracture toughness and wear resistance because of dense and column-free morphology as the main characteristic. View Full-Text
Keywords: MAX phase; HiPIMS; Cr2AlC; average target power; TiBw/Ti6Al4V composite MAX phase; HiPIMS; Cr2AlC; average target power; TiBw/Ti6Al4V composite
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MDPI and ACS Style

Qureshi, M.W.; Ma, X.; Tang, G.; Miao, B.; Niu, J. Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS. Materials 2021, 14, 826. https://doi.org/10.3390/ma14040826

AMA Style

Qureshi MW, Ma X, Tang G, Miao B, Niu J. Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS. Materials. 2021; 14(4):826. https://doi.org/10.3390/ma14040826

Chicago/Turabian Style

Qureshi, Muhammad W., Xinxin Ma, Guangze Tang, Bin Miao, and Junbo Niu. 2021. "Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS" Materials 14, no. 4: 826. https://doi.org/10.3390/ma14040826

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