In this paper, a variety of micro-textures made by imitating the biological body surface are mentioned, and four common biomimetic texture types—convex hull, pit, groove and corrugation—are summarized by referring to a large number of literatures. These texture types that are widely used are those of the grooves and the pits of non-smooth surface because their viscosity drag reduction effects are relatively optimal for wear-resistance; in view of these two types of textures (with others including pit diameter, groove width, depth and area of share, and morphology spacing), we use data analysis and comparisons to find optimal parameter values in order to find the optimal effect of drag reduction and anti-sticking wear-resistance. Several texture processing methods are briefly introduced through case analysis and an illustration of the viscosity drag reduction mechanism of wear-resistance, and general fluid dynamic pressure is deduced from a theory formula in order to facilitate future research work on the basis of the optimal parameters to further improve the friction, wear lubrication, and hydrophobic properties, thus improving the bionic texture surface efficiency of saving energy and reducing consumption in industrial applications.

This article reviews the current status of automotive brake disc research and the prospects for future research. At present, the research of brake disc performance mainly includes thermal conductivity, thermal fatigue resistance, wear resistance, and brake noise. It is found that a new alloy composite, heat treatment process, ceramic composite, new structure, and new materials are emerging. At the same time, it was found that ceramic and resin were used as the matrix, fiber materials were used as reinforcements to prepare brake discs, the addition of new fillers and the study of special reinforcement materials have become new hotspots in the study of brake discs. In the future development, carbon-fiber ceramic brake discs may become the main research focus of brake discs.

The microstructure and tribological characteristics of SiC/Ni60 composite coatings manufactured using directed energy deposition (DED) technology are investigated. The influence of different laser powers on the composites is studied. The evolution characteristics of the microstructure, the stepped variation pattern of microhardness, and the formation mechanism of wear resistance induced by different laser powers are observed in SiC/Ni60 composite coatings. Laser power variations emerged as crucial factors for improving the structure and performance of the composites. The relationship between microstructure, phase identification, and laser power is clarified using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), electron back-scattered diffraction (EBSD), and X-ray diffractometer (XRD). The best laser power is determined to be 3000 W based on microhardness and tribological characteristics. Additionally, the friction coefficient, wear rate, and wear behavior provide insights into the tribological features. Appropriate laser power parameters can suppress severe abrasive and adhesive wear and reduce the area of oxidative wear, resulting in a 51.99% reduction in wear rate. From the results obtained, it is evident that selecting the appropriate laser power provides a valuable direction for improving the performance of the composite coatings. The present work is expected to be applied to components such as crankshafts, where enhanced wear resistance is required.