Influence of the gas environment on the transferred film of the brass (Cu64Zn36)/steel AISI 1045 couple

However, in vacuum, the transfer film is produced by discontinuous adhered particles on the disc. The largest wear rate is obtained, when using pure oxygen and the largest friction coefficient μ was measured in ambient air. The smallest friction coefficient and wear rate are obtained in vacuum due to the transition of a brass/steel contact to a brass/brass contact after nucleation of transfer particles.