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@article{TIAN2025110851,
title = {Study on the Friction and Wear Characteristics of NiCoCrAlYTa-Cr2O3-Cu-Mo Composite Coating and GH4214 under Different Temperature Test Conditions},
journal = {Tribology International},
pages = {110851},
year = {2025},
issn = {0301-679X},
doi = {https://doi.org/10.1016/j.triboint.2025.110851},
url = {https://www.sciencedirect.com/science/article/pii/S0301679X25003469},
author = {Xin Tian and Tianying Wang and Ying Liu and Sheng Gao and Boxian Zhang and Junma Yuan and Yongjian Li},
keywords = {Brush seal, Self-lubricating, Coating, Friction property, Spinel oxides},
abstract = {The frictional properties of coatings in brush seals are often influenced by environmental temperature. The study investigates the tribological properties of NiCoCrAlYTa-Cr₂O₃-Cu-Mo coating and GH4214 material under different temperature conditions, using a high-temperature friction and wear tester. The influence of changes in the composition and structure of the coating on the tribological properties of the coating under high-temperature friction conditions were examined using white light interferometer, scanning electron microscope (SEM), and X-ray diffractometer (XRD). The results show that the friction coefficient of the friction pairs shows a unimodal shape under the temperature range from room temperature to 650℃, with a maximum value of 0.61 at 500℃. When the temperature rises to 650℃, the friction coefficient decreases by 45.9% compared to 500℃. This decrease is attributed to the generation of spinel oxides, which have a sustained self-lubricating effect, significantly reducing the friction coefficient and wear rate. Moreover, the internal structure of the coating undergoes the process of disorder to order with increasing temperature. The findings of this study provide theoretical guidance for designing high-performance, high-temperature wear-resistant coating materials.}
}