Biomimetic functional surface of reducing soil adhesion on 65Mn steel

Abstract

The phenomenon of soil adhesion occurs when soil-tillage implements interact with soil, which often increases the working resistance and energy consumption. It was found that the membranous leaf sheath of rhizoma imperatae can shuttle in soil, owing to not only its own growth force, but also the anti-adhesion function due to the hydrophobicity and special surface texture. In this article, the microstructure and surface wettability of membranous leaf sheath were studied to reveal its anti-adhesion property by testing. The anti-adhesion mechanism of the hydrophobic surface for the static and dynamic state was analyzed. The biomimetic specimens were designed and fabricated using 65Mn steel inspired by membrane leaf sheaths. The hydrophobic surface was obtained on 65Mn steel by the low free energy modification with myristic acid ethanol solution. For comparison, a 65Mn steel sample without modification was also prepared. A linear soil bin filled with clayey soil with the compaction and gravimetric moisture content of 24.5% dry base was constructed to test the soil anti-adhesion properties of biomimetic specimens. In fixed compacted soil with 24.5% moisture content, the weight of adhesive soil on the modified biomimetic surface measured 50% less than that of the control specimens flat plate surface with modification and NO. 10.

Biomimetic Design of Soil-Engaging Components: A Review

“…Due to the reduction in soil adhesion, its traction resistance decreased by 2.13–22.30% at a speed of 1.04 m/s. Li et al [ 130 ] found that the anti-adhesion performance of the membranous leaf sheath surface was the result of the joint interaction of surface structure and hydrophobicity. Based on this, bionic specimens with various structures were designed.…”

Simulation and Structural Analysis of a Flexible Coupling Bionic Desorption Mechanism Based on the Engineering Discrete Element Method

“…The theory of profiling design and non-smooth surface drag reduction has been rapidly developed and applied and also has been widely recognized [9,10]. The non-smooth surface structure also has a good anti-adhesion and desorption effect on the soil-engaging components of agricultural machinery, such as the structure of convex hulls, pits, and ribs [11,12]. Numerous studies have shown that the shape, depth, and density of surface textures have a significant impact on friction, but under different working conditions such as pressure and load, they can affect the effect of a surface structure and even lead to its failure [13][14][15][16].…”

Effect of Substrate Preheating Temperature on the Microstructure and Properties of Laser Cladding Fe/TiC Composite Coating

“…65Mn steel, renowned for its exceptional strength, toughness, and wear resistance, finds widespread application in the fabrication of soil-engaging components for agricultural machinery, including tine harrows, plowshares, and deep-pine shovels [1][2][3]. However, during operational usage, these components often encounter harsh conditions such as elevated temperatures, heavy loads, and the absence of lubrication, leading to severe wear and fatigue [4]. Conventional 65Mn steel presents challenges in further enhancing its performance.…”