Abstract
NiCr–Cr3C2 coating was fabricated using supersonic plasma spraying technology. Subsequently, rolling/sliding contact fatigue (R/SCF) testing was carried out, using acoustic emission (AE) technology to monitor the failure process. The results showed that R/SCF consists of three failure modes, namely abrasion, spalling, and delamination. Abrasion is the main failure mode, but delamination is the most severe. The AE monitoring results indicated that the R/SCF failure process is composed of normal contact, crack initiation, crack propagation, and material removal stages. The frequency of each stage was analyzed by fast Fourier transform, revealing a peak frequency for each stage mainly distributed from 200 to 250 kHz.
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This paper was financially supported by NSFC (51275151), 973 Project (2011CB013405), and the Distinguished Young Scholars of NSFC (51125023).
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Guolu, L., Zhonglin, X., Tianshun, D. et al. Acoustic Emission Investigation of Rolling/Sliding Contact Fatigue Failure of NiCr–Cr3C2 Coating. J Therm Spray Tech 25, 1365–1372 (2016). https://doi.org/10.1007/s11666-016-0436-2
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DOI: https://doi.org/10.1007/s11666-016-0436-2