[T11] Industrial Application

[15P-T11-02] Withdrawn

The rapid development of modern industry has made traditional ferrous antifriction materials (FAMs) cannot completely meet some applications at elevated temperatures. In this work, Mo-coated MoS₂ powders were prepared by a liquid phase coating-hydrogen reduction method. Fe-15Cu-0.8C-3.75(Mo-coated MoS₂) materials were prepared by powder metallurgy from Fe, Cu, graphite and 3.75(Mo-coated MoS₂) mixed powders, their microstructure and tribological properties at elevated temperatures were investigated. It is found that the addition of Mo-coated MoS₂ powders effectively avoids the decomposition of MoS₂ during sintering process, improves the bonding strength between the MoS₂ and the matrix, and significantly improves antifriction performance of sintered Fe-15Cu-0.8C samples at elevated temperatures. Compared with the sintered Fe-15Cu-0.8C samples, the sintered Fe-15Cu-0.8C-3.75(Mo-coated MoS₂) samples has good antifriction properties with a friction coefficient of 0.23 and wear rate of 6.3 × 10^-7 mm³/N·m under high-temperature friction and wear test.