Multiwalled carbon nanotubes enhanced the friction layer evolution and self-lubricating property of TiAl-10 wt% Ag-1 wt% MWCNTs sample

Abstract

The necessity of reducing energy consumption and usage of material in aerospace and aviation industries drives the further optimization of friction and wear properties of TiAl alloys.

Coordinating influence of multilayer graphene and spherical SnAgCu for improving tribological properties of a 20CrMnTi material

“…7 shows the typical XPS phase characterization of the wear scar of 20CrMnTi at 85 min. As shown in the figure, with reference to the results of Zhang et al , 23 Fan et al , 24 Huang et al , 25 and Yang et al , 26 the main XPS diffraction peaks were mainly attributed to the metal oxides of SnO 2 , Fe 3 O 4 , MnO 2 , and Cr 2 O 3 . When sliding wear was carried out up to 85 min, metal oxides such as SnO 2 , Fe 3 O 4 , MnO 2 , and Cr 2 O 3 formed on wear scars, leading to a friction coefficient of approximately 0.32 and a wear rate of approximately 4.23 × 10 −5 mm 3 N −1 m −1 (see Fig.…”

Preparation, Mechanical Properties, and High-Temperature Wear Resistance of Ti–Al–B alloy

“…However, TiB showed a malign effect on the wear performance of Ti6Al4V because of the delamination of TiB particles. The addition of solid lubricants was another method to reinforce the wear resistance of alloys at high temperatures, including the use of low-temperature and high-temperature solid lubricants [12,17,18,19,20]. Different types of Ti matrix materials containing two or three solid lubricants were reported.…”

“…On one hand, Ti 3 SiC 2 directly forms lubricating film on the worn surfaces of TiAl alloys; on the other hand, Ti 3 SiC 2 decomposes during the friction process to form oxide film, which consists of SiO 2 and TiO 2 . Although the solid lubricants can decrease the friction and wear of titanium matrix composites at elevated temperatures, the solid lubricants destroy the mechanical properties of materials [18,19,21,23]. Hence, we make an attempt to balance the mechanical properties and friction coefficient as well as wear of titanium alloys at elevated temperatures.…”