Microstructure and Mechanical Behavior of MnO2/Pb Nanocomposite

Karbasi, Masoud; Alamdari, Eskandar Keshavarz; Dehkordi, Elahe Amirkhani; Tavangarian, Fariborz

doi:10.1007/s11665-019-04052-9

Cited by 6 publications

(2 citation statements)

References 27 publications

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“…% loading of MnO 2 due to a proper distribution of MnO 2 particles in the matrix material. 53 Mrówka et al found that adding manganese (II) oxide and manganese residue to silicone-based composites significantly improved the density, resilience, hardness, and tribological properties when compared to neat epoxy. 54 However, there are few research papers available on the material MnO 2 /epoxy nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and tribological behavior of MnO₂/epoxy nanocomposites

Hussain

Khan

2022

High Performance Polymers

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Tribology is the study of moving surfaces, and it has a variety of effects on our lives. From an economic point of view, wear is one of the most important aspects of an industry’s viability. Parts of the machine can wear out, and they need to be replaced. This is especially important for polymer-based materials. Therefore, it is important to reduce maintenance costs and improve machine reliability in a variety of engineering applications through proper material selection. The present investigation deals with the fabrication of manganese dioxide (MnO2)/epoxy nanocomposite and investigates its tribological properties. The MnO2/epoxy nanocomposites were fabricated via a solution mixing technique. The phase identification and surface morphology of the sample was examined by X-ray diffractometer and field emission scanning electron microscope, respectively. The mass density, micro-hardness, and specific wear rate data of samples revealed that the mass density, micro-hardness, and wear resistance of the samples increased with the addition of MnO2 in the epoxy matrix. The nanocomposite sample containing 0.5 wt. % MnO2 loading in the epoxy matrix shows higher density, micro-hardness, and wear resistance compared to other samples. The result also shows that with the addition of MnO2 in the epoxy matrix, the coefficient of friction of the samples is increased. The percentage reduction in specific wear rate due to the addition of 0.5 wt. % MnO2 in neat epoxy is 68.10%, whereas the percentage increase in the coefficient of friction is 19.30%. The results of the analysis of variance show the effect of adding wt. % of MnO2 in the epoxy matrix is significant in the tribological responses. The worn surface analysis shows that the fatigue wear mode seems to be the dominating mode of wear for all samples as compared to the other modes of wear. The properties of MnO2/epoxy nanocomposite data revealed that the developed material may be used in the automotive industry as a structural material, fabrication of snow sled, ball bearing housing, or plastic gear materials with adequate lubrication.

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Section: Introductionmentioning

confidence: 99%

Fabrication and tribological behavior of MnO₂/epoxy nanocomposites

Hussain

Khan

2022

High Performance Polymers

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“…25 El-Nemr et al observed that adding MnO 2 and Fe 3 O 4 fillers increased the tensile strength and hardness of the rubber matrix. 26 Karbasi et al 27 found an increase in the amount of nano-MnO 2 up to 0.5 wt.%, enhanced the yield stress, tensile stress, and elongation of lead. Song et al found that the MnO 2 nanoparticles and the polyethylene substrate had a relatively strong chemical interaction due to the presence of oxygen-containing groups.…”

Section: Introductionmentioning

confidence: 99%

Effect of dry sliding wear parameters on the specific wear rate of α-MnO₂-epoxy nanocomposites

Hussain¹,

Khan

Sarmah

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Wear parameter optimization is critical for the successful use of materials in load-bearing applications. This study examines the optimization of various wear parameters using the Taguchi technique for the determination of the specific wear rate of alpha-manganese dioxide (α-MnO2)-epoxy nanocomposites. Four factors viz. wt.% loading of α-MnO2, sliding distance, sliding velocity, and normal load, were selected as controllable factors and a suitable L16 orthogonal array was chosen for conducting experiments. An X-ray diffractometer and field emission scanning electron microscope were used to examine phase identification, surface morphology, and chemical composition. With the addition of α-MnO2 in the epoxy, the tensile stress is decreased, while the elastic modulus is increased. The Taguchi result shows that the wear test in optimal condition is carried out with a wt.% loading of α-MnO2 of 0.5%, a sliding distance of 500 m, a sliding velocity of 1.5 m/s, and an applied normal load of 5 N. Analysis of variance shows the wt.% loading of α-MnO2 has the most influential parameter on specific wear rate with a contribution of 87.94%. The analysis also shows that the general linear model accurately describes the effect of sliding wear parameters on specific wear rates. The Monte Carlo simulated model shows that the experimental signal-to-noise ratios are consistent with the simulated model values. The confirmation test result shows that the % error between the predicted and experimental values of the specific wear rate at the optimum level combination is 4.67%. The worm surfaces of different trial runs show that the material removal process is caused by crack propagation. High-resolution scanning electron microscopic images of fractured surfaces show the formation of a stable tribo-layer at 0.5 wt.% α-MnO2 loading resulted in a significant decrease in the specific wear rate of the sample.

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Enhancing mechanical and microstructural properties of Pb composite anode by the addition of W-Co3O4 ceramic particles fabricated by Accumulative Roll Bonding

Motevali Emami,

Karbasi,

Amirkhani Dehkordi

2024

Ceramics International

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Microstructure and Mechanical Behavior of MnO2/Pb Nanocomposite

Cited by 6 publications

References 27 publications

Fabrication and tribological behavior of MnO₂/epoxy nanocomposites

Fabrication and tribological behavior of MnO₂/epoxy nanocomposites

Effect of dry sliding wear parameters on the specific wear rate of α-MnO₂-epoxy nanocomposites

Enhancing mechanical and microstructural properties of Pb composite anode by the addition of W-Co3O4 ceramic particles fabricated by Accumulative Roll Bonding

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Microstructure and Mechanical Behavior of MnO2/Pb Nanocomposite

Cited by 6 publications

References 27 publications

Fabrication and tribological behavior of MnO2/epoxy nanocomposites

Fabrication and tribological behavior of MnO2/epoxy nanocomposites

Effect of dry sliding wear parameters on the specific wear rate of α-MnO2-epoxy nanocomposites

Enhancing mechanical and microstructural properties of Pb composite anode by the addition of W-Co3O4 ceramic particles fabricated by Accumulative Roll Bonding

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Product

Resources

About

Fabrication and tribological behavior of MnO₂/epoxy nanocomposites

Fabrication and tribological behavior of MnO₂/epoxy nanocomposites

Effect of dry sliding wear parameters on the specific wear rate of α-MnO₂-epoxy nanocomposites