Tribological behavior studies of chemically bonded phosphate ceramic coatings reinforced with modified multi‐walled carbon nanotubes (MWCNTs)
Source abstract
Abstract
Abstract To improve the wear resistance of the chemically bonded phosphate ceramic coatings, MWCNTs are selected as the reinforcement after the modification. The high temperature wear experiment is carried out to investigate the wear behavior of the coatings with different temperatures. The results suggest that, when the temperature is below 500℃, MWCNTs can decrease friction coefficient, and the lowest friction coefficient is about 0.28, but MWCNTs lose the lubricant function at 500℃ and the friction coefficient keeps at the level of ~ 0.68. In addition, the wear resistance of coatings is improved with the introduction of MWCNTs at 100℃ and 300℃ (the wear rate is below 15X10 ‐3 mm 3 /Nm), but keeps similar level at 500℃ (the wear rate is ~ 22 × 10 −3 mm 3 /Nm). Besides, the wear mechanism of the coatings reinforced by MWCNTs is also investigated based on the wear behavior and microstructural characterizations. MWCNTs improve the fracture toughness by preventing the crack generation and forming the bridge when crack occurs, which leads to smooth wear tracks and good wear resistance of coatings. The coatings with MWCNTs achieve poor wear resistance at 500℃ because MWCNTs lose their strength and resistance to fatigue by oxidizing.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Tribology and Wear Analysis · Advanced ceramic materials synthesis · Magnesium Oxide Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Mechanical Engineering Jiangnan University Wuxi China
Wuxi Cummins Turbo Technologies Ltd Wuxi China
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology Jiangnan University Wuxi China
Funding
National Natural Science Foundation of China · Jiangnan University
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