Low-friction member imitating shark skin and manufacturing method therefor

A manufacturing method for a low-friction member, the method comprising:

• forming composite particles by coating spherical metal lubricating particles on surfaces of plate-shaped particles;
• stacking the composite particles in layer on the surface of a substrate in the form of scales;
• and
• strengthening bonding of the composite particles and the substrate with each other by pressing the composite particles and the substrate at a high temperature while the composite particles are stacked on the substrate,
• wherein
• in the forming of the composite particles, ultrasonic waves are applied to slurries including plate-shaped particles and spherical metal lubricating particles to coat the spherical metal lubricating particles on the surfaces of the plate-shaped particles by a collision of the plate-shaped particles and the spherical metal lubricating particles;
• and
• in order to manufacture the slurries including the plate-shaped particles and the metal lubricating particles, the plate-shaped particles are first introduced into a solvent and thereafter, stirred while applying ultrasonic waves to the plate-shaped particles to uniformly disperse the plate-shaped particles and thereafter, the spherical metal lubricating particles are additionally introduced into the solvent and thereafter, stirred while applying the ultrasonic waves to uniformly disperse the spherical metal lubricating particles.