Performance Evaluation of CNT/MoS2 Hybrid Nanofluid in Machining for Surface Roughness

Abstract

Present work is motivated by the high thermal conductivity of MWCNT and low coefficient of friction due to MoS2 nanoparticles which can significantly improve the heat transfer and lubrication performance of hybrid nanofluids than nanofluids. Hybrid nanofluids are prepared with CNT/MoS2 nanoparticles of 1wt% in sesame oil, neem oil and mahua oil by varying hybrid ratio (i.e. 1: 1; 1:2 and 2:1) and surfactant. The hybrid nanofluid composition is evaluated based on stability analysis from sedimentation and zeta potential studies. The concentration of nanoparticles is varied by preparing CNT/MoS2 hybrid nanofluid using obtained composition for stability and selected the optimal concentration for the lowest coefficient of friction obtained in friction test. The property of thermal conductivity is also evaluated for varying concentration of hybrid nanofluid at room temperature. The contact angle for CNT/MoS2 hybrid nanofluids is evaluated with a contact angle meter to understand the lubrication effect. Experimental findings for stable hybrid nanofluid are found to be sesame oil, SDS with 15% content of nanoparticle weight and 1:2 hybrid ratio. From friction test, it is observed that 2 wt%concentration is optimal for least coefficient of friction (0.038). Minimum surface roughness (Ra) is observed with 2 wt% of hybrid nanofluid compared to dry machining and conventional cutting fluid. Optimum conditions for minimum surface roughness are evaluated in turning of AISI1040 steel with the use of 2wt% of CNT/MoS2 hybrid nanofluid in RSM. Ra value is observed to decrease with an increase in cutting speed and increased with an increase in feed and depth of cut.

Estimation of Wear Performance of Al-based Composite Reinforced with Al2O3 and MoS2 Using Taguchi Approach

“…These layers will slide with minimal force applied proportional to each other, thereby gaining themselves low drag properties. Of this purpose, graphite and MoS2 have used in industrial applications [10].…”

Fabrication and Modelling of Tribological Performance of Al-Si/12Al2O3/2MoS2 Composite using Taguchi Technique

“…More related compounds include polytetrafluoroethylene (PTU), calcium fluoride (CaF), and cerium tungsten disulfide (CeW12), have the same effect [13]. The interface of MoS 2 appears to be linear with lamella directed in the direction of motion, serving as a pathway for relative motion but hindering interaction through different sliding components under varying strain [14]. Using lubricants is useful to keep materials from adhering to each other, due to a weak bond with the surface.…”

Entropy generation in electroosmotically aided peristaltic pumping of MoS2 Rabinowitsch nanofluid

“…It is observed that viscosity index has been increased by 5.39%, 6.71%, and 7.04% for 0.1%, 0.4%, and 0.7 wt% MoS 2 nanoparticles respectively. Some other investigations (Gugulothu and Pasam 2019, Khan et al 2020a, Nadeem et al 2021 have also been added to examine the thermophysical properties with various base fluids and hybridized with other nanoparticles. Based on the better outcomes of the CMC-based nanofluids, kerosene-based nanofluids, and MoS 2 nanoparticles, the present model is deliberated to examine the thermophysical and rheological effects on peristaltic pumping in the presence of electroosmosis.…”