Influence of Multiple Bionic Unit Coupling on Sliding Wear of Laser-Processed Gray Cast Iron
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In this study, in effort to improve the sliding wear resistance of gray cast iron under wet lubrication conditions, specimens with different bionic units were manufactured and modified according to bionic theory. Inspired by the structure and appearance of biological wear-resistant skin, two kinds of bionic units were processed by laser on the specimen surfaces. We investigated the wear resistance properties of the samples via indentation method and then observed the wear surface morphology of specimens and the stress distributions. The results indicated that coupling the bionic units enhanced the wear resistance of the cast iron considerably compared to the other samples. We also determined the mechanism of wear resistance improvement according to the results.
Keywordsbionic pit unit bionic strip unit gray cast iron laser wear resistance
This article was supported by Project 985—High Performance Materials of Jilin University and the Project 985—Bionic Engineering Science and Technology Innovation and National Natural Science Foundation of China (No. 51275200).
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