Interaction between Components of the Copper-Based Self-Lubricating Antifriction Composite at 900 and 950 °C

Abstract

It is shown that a self-lubricating antifriction composite with microheterogeneous structure is synthesized during sintering of the Cu–Ni–Р–MоS₂ powder in hydrogen at 900 and 950 °С. The structure of self-lubricating antifriction composite formed at 900 °C represents is α-solid solution of nickel in copper hardened by complex phosphide MоNiP, in which sulfide Cu₂Mо₃S₄ is distributed. Molybdenum disulfide interacts with hydrogen at 950 °С to form Cu₂S and MoP. The structure of self-lubricating antifriction composite formed at 950 °C differs from the previous one in the amount of α-solid solution of nickel in copper, the type (МоР) and content of hardening phase in it, and the type (Cu₂Mо₃S₄ і Cu₂S) and amount of antifriction structural component.