Gas–Solid Erosive Wear of Biomimetic Pattern Surface Inspired from Plant

ABSTRACT

Gas–solid erosive wear is a phenomenon in which serious mechanical damage is caused by the impact of solid particles on a wall. In this study, we investigated the erosive wear characteristics and mechanism of biomimetic groove surfaces in gas–solid erosive wear. Orthogonal experimental results showed that the order of the factors that influenced the erosive wear of the biomimetic groove surface was morphology > space > feature size. The V-shaped groove surface exhibited the best erosive wear resistance over the smooth, square, and U-shaped groove surfaces. The surface microstrain calculated by X-ray diffraction lines was used to study the mechanism of erosive wear resistance enhancement of the biomimetic surface. The microstructure of the eroded surface was analyzed by scanning electron microscopy. The appearance of ribs on the biomimetic groove surface increased the erosive wear of the surface in a distal position with respect to the ribs themselves. This article shows more opportunities for bionic application in improving the anti-erosion performance of moving parts that work under dirt and sand particle environments.

KEYWORDS:

• Biomimetic
• groove surface
• gas–solid erosion
• erosive wear
• microstrain

Funding

This work was supported by the National Natural Science Foundation of China (Nos. 51505248, 51175220, 51425502) and Open Foundation of Key Laboratory of Bionics Engineering, Jilin University, Ministry of Education (No. K201503).