Damping performance of YSZ coating prepared by different EB-PVD parameters

ABSTRACT

A yttrium-stabilised zirconia (YSZ) coating was prepared on Ti–6Al–4 substrates by electron beam physical vapour deposition (EB-PVD). The effect of substrate temperature and beam intensity on the microstructure of the coating was researched. Damping characteristics of the coatings under different processing parameters were compared. The microstructure and crystal structure were determined with scanning electron microscope (SEM) and X-Ray Diffraction (XRD), respectively. The damping properties of the coating were measured by dynamic mechanical analyzer (DMA). The decrease in the substrate temperature leads to diminution of the grain size of coating, which increases the loss factor (Q⁻¹). The crystal defects and micro-cracks of the coating are also the main reasons for the improvement of the damping performance.

KEYWORDS:

• Damping performance
• YSZ coating
• microstructure
• substrate temperature
• beam intensity

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Guangyu Du http://orcid.org/0000-0002-9925-3942

Zhuolong Li http://orcid.org/0000-0002-4936-4062

Guohao Li http://orcid.org/0000-0002-0630-8482

Additional information

Funding

This work was financially supported by the Fundamental Research Funds for the Central Universities of China (Grant No. N160304002, No. N160302001), Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University (VCAME201604) and National Natural Science Foundation of China (Grant No. 51005043).