Synergism of hollow MoS₂ nano-particles and WS₂ micro-particles on improving the tribological properties of carbon fiber fabric reinforced phenolic-based composites

Molybdenum disulphide—A traditional external lubricant that shows interesting interphase properties in pulp‐based composites

“…For the DP-based samples containing MoS 2 , at 30 and 50 wt%, the elongation-atbreak was significantly greater than that of the corresponding samples with MgSt as additive or of those without any additive. This may be because the MoS 2particles interact only weakly with cellulose, but act as spacers reducing the direct contact/interaction between fiber and matrix and improving the sliding between fiberfiber and fiber-matrix, as reported by Tong et al [23] The TMP30 samples with the lubricants added separately showed the greatest overall improvement in the mechanical properties When MgSt was added to these samples the tensile modulus and strength respectively decreased from 1.5 GPa and 35 MPa at a lubricant content of 1.5 wt% to 1.4 GPa and 32 MPa at a lubricant content of 5 wt%, but, when MoS 2 was used as the lubricant, the tensile modulus and strength respectively increased from 1.2 GPa and 32 MPa at a lubricant content of 1.5 wt % to 1.6 GPa and 39 MPa, at a lubricant content of 5 wt%. When both the lubricants were added together (2.5 wt% MgSt and 2.5% wt% MoS 2 ) the values however were lower than that of the TMP30 without additive.…”

“…Since MoS 2 is known to be an excellent solid lubricating additive, due to its twodimensional layer structure, and since it has been shown to improve tribological properties, it has earlier been used as an additive in composites. [23] An ethylene-acrylic acid copolymer, with a 15% content of acrylic acid (EAA), was used as the polymer matrix in this case. The EAA has previously been used in composites and has been shown be compatible with cellulosic materials.…”

Wear characteristics and sustainability of WS2 solid lubricant deposited layer on Al 6061-T6 substrate under the dry sliding conditions

“…It can be affirmed from the above literature that the EDD process using solid lubricant gives a better tribological outcome. In order to develop the self-lubricating layer for tribological application, the depositing material must possess superior lubricant with a solid interfacial binding (S-W-S) [15], high thermal stability, and load-carrying capacity, and WS 2 is the promising material [16,17]. A recent finding by Niste et al [18] proclaimed that the Al-WS 2 composite sliding surface exhibits enhanced resistance to abrasion and galling.…”