The Characterization of Running-In Coatings on the Surface of Tin Bronze by Electro-Spark Deposition

Antifriction materials, such as silver, copper, Babbitt B83, and graphene oxide (GO), were used to prepare running-in coatings on the surface of bronze QSn10-1 by electro-spark deposition (ESD). The analyses mass transfer, roughness, thickness, morphology, composition, nanoindentation, tribological properties investigated. results showed that dense with refined grains uniformly distributed in a metallurgical bond state tin substrate. At optimum process parameters, transfer was 244.2 mg, roughness 15.9 μm, thickness layers 160 μm. diffraction peaks clearly indicated phases corresponding α-Sn, SbSn, Cu6Sn5, Cu, phase Ag3Sn appeared. modulus hardness 24.9% 14.2% substrate, deformation ratio 10.2% higher than friction coefficient about 0.210 after stage, which 64.8% substrate (0.324). main wear mechanism under optimal parameters is plastic deformation, scratching, slight polishing. coating action high specific loads provides automatic adjustment parts compensation for manufacturing errors.