Structure and tribological behavior of CrAlCN coating in artificial seawater

Zhang, Peng; Shan, Lei; Tian, Ying; Su, Xiaolei; Luo, Liang; Chen, Jianmin

doi:10.1088/2051-672x/ac1f7d

Cited by 4 publications

(1 citation statement)

References 33 publications

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“…This situation may prove that the nanomultilayer has higher wear resistance. Plasticity index (H 3 /E 2 ) is also used to evaluate the resistance of material to plastic deformation [ 31 , 32 ]. The plasticity index of CrAlN/TiSiN coating increases from 0.56 GPa to 0.63 GPa as the modulation period decreases from 455 nm to 19 nm, indicating the improved toughness and plastic deformation ability from the superlattice effect [ 20 ].…”

Section: Resultsmentioning

confidence: 99%

Impact Abrasive Wear Property of CrAlN/TiSiN Multilayer Coating at Elevated Temperatures

et al. 2022

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The impact wear property of hard coatings at elevated temperatures is of particular interest for applications in nuclear power plants. This study evaluated the impact wear behavior of two CrAlN/TiSiN coatings with and without sand. Alternately grown CrAlN and TiSiN films with modulation periods of 455 and 19 nm were formed in a columnar structure. The nanomultilayer shows better impact wear resistance than multilayer films with and without sand. The energy absorption rate has a similar trend to wear rate, leading to lower rebound velocity and peak impact force of the nanomultilayer compared with that of the multilayer. CrAlN/TiSiN coatings can protect the 308L substrate from oxidation. The dominant impact wear mechanism without sand is plastic deformation, and this wear region can be defined as the percussive zone. Peeling occurs on the multilayer surface without sand after 104 percussions, leading to rapid oxidation of the 308L substrate at 500 °C. Due to the abrasion effect, the wear rate of the sample with sand increases by an order of magnitude compared to the sample without sand. The wear scar of the sample with sand can be divided into the mixing zone and the sand−affected zone from inside to outside. Fe oxides are formed beyond the unbroken coating, which may be related to the outward diffusion of Fe.

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Section: Resultsmentioning

confidence: 99%