Effect of graphene nanoparticles and sulfurized additives to MQL for the machining of Ti-6Al-4 V

The friction stir process (FSP) method used to prepare polyamide 6 (PA6)/nitrile-butadiene rubber (NBR) nanocomposites with 1 wt% Graphene nanoparticles. Response surface methodology (RSM) and Box-Behnken design were used to study the effects of four input variables including tool rotational speed (ω), shoulder temperature (T), traverse speed (S), and the number of passes (N) on tensile strength and impact strength of PA6/NBR/Graphene nanocomposite. In order to investigate the dispersion state of Graphene and the morphology of the PA6/NBR blend in the presence of Graphene, wide x-ray patterns (WAX), scanning electron microscopy (SEM) were performed. Furthermore and differential scanning calorimetric (DSC) was used to investigate the thermal properties of PA6/NBR containing 1 wt% Graphene nanoparticles. The results confirmed that at the optimum range of input variables, PA6/NBR/Graphene nanocomposite provided good thermal stability as well as the highest tensile strength, and impact strength. This is caused by the large surface area to volume ratio of the dispersed layered Graphene in PA6/NBR blends. Under optimal conditions of the rotational speed of 1200 rpm, traverse speed of 20 mm/min, shoulder temperature of 125°C, and number pass of 3, the maximum tensile strength and impact strength are 70.4 MPa and 70.3 J/m, respectively.

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Graphene Nanoparticles Decorated Silicon Nanowires with Tungsten Oxide Counter Electrode for Quasi-Solid State Hybrid Solar Cells

Sustainable Energy & Fuels ◽

10.1039/d0se01605e ◽

2021 ◽

Author(s):

Ankita Kolay ◽

Manoranjan Ojha ◽

Melepurath Deepa

Keyword(s):

Ionic Liquid ◽

Solar Cells ◽

Solid State ◽

Tungsten Oxide ◽

Silicon Nanowires ◽

Counter Electrode ◽

Near Infrared ◽

Hybrid Solar Cells ◽

Functionalized Graphene ◽

Graphene Nanoparticles

Anchoring ionic liquid functionalized graphene nanoparticles (IL-GNP) to silicon nanowires (SiNW) improves the solar spectral utilization from visible to near infrared (NIR). Due to the bandgap of IL-GNP in the...

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Influence on emissions and performance of CI engine with graphene nanoparticles blended with Karanja biodiesel

10.1063/5.0036142 ◽

2021 ◽

Author(s):

Jayashri Nair ◽

Putha Prasad Kumar ◽

Amit Kumar Thakur ◽

Samhita ◽

Aravinda

Keyword(s):

Ci Engine ◽

Graphene Nanoparticles ◽

And Performance ◽

Emissions And Performance

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Structural, Optical, Thermal and Electrical Properties of Graphene Nanoparticles Doped Pvp/Pva Nanocomposites

SSRN Electronic Journal ◽

10.2139/ssrn.3602213 ◽

2020 ◽

Author(s):

A. .. Rajeh ◽

A. A. ALdhabi ◽

E.M. Abdelrazek ◽

A. M. Abdelghany

Keyword(s):

Electrical Properties ◽

Thermal And Electrical Properties ◽

Graphene Nanoparticles

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The impact of graphene nanoparticle additives on the strength of simple and hybrid adhesively bonded joints

Journal of Composite Materials ◽

10.1177/0021998318817588 ◽

2018 ◽

Vol 53 (23) ◽

pp. 3335-3346 ◽

Cited By ~ 2

Author(s):

Hamid Reza Borghei ◽

Bashir Behjat ◽

Mojtaba Yazdani

Keyword(s):

Joint Strength ◽

Tensile Tests ◽

Lap Joints ◽

Homogeneous Distribution ◽

Adhesively Bonded ◽

Adhesively Bonded Joints ◽

Single Lap Joints ◽

Hybrid Joints ◽

Graphene Nanoparticles ◽

The Impact

In this paper, the effect of graphene nanoparticle additive on the strength of simple and hybrid (rivet-bonded) single-lap joints is studied using the experimental method. Two different types of graphene with different number of layer and thicknesses are used in adhesive-graphene nanoparticle composite construction. At first, tensile tests are done on bulk specimens of adhesive with different additives. It is found that adding 0.5 wt% of graphene to the neat adhesive leads to an increase in the ultimate tensile strength of bulk specimens almost 24% and 12% for two graphene types compared to the neat adhesive. Also, the shear strength of adhesive and hybrid lap joints incorporating two types of graphene nanoparticles (types I and II) is compared to that of adhesive and hybrid joints without graphene nanoparticles. SEM results of fracture surfaces show that the inclusion of graphene nanoparticle to the adhesive increases the roughness of surfaces. Experimental results reveal that graphene nanoparticle increases the strength of bonded and hybrid joints. It is observed that, graphene with a lower thickness and number of layers has a better influence on joint strength. In fact, graphene nanoparticle type II makes a homogeneous distribution in adhesive-graphene nanoparticle composite and causes a significant increase on joint strength.

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Osteogenic Regulation by Graphene Nanoparticles in Human Mesenchymal Stem Cells

The FASEB Journal ◽

10.1096/fasebj.2021.35.s1.03683 ◽

2021 ◽

Vol 35 (S1) ◽

Author(s):

Amber MacDonald ◽

Ruby Trotter ◽

Austin Bow ◽

Amanda Murphy ◽

Lisa Amelse ◽

...

Keyword(s):

Stem Cells ◽

Mesenchymal Stem Cells ◽

Human Mesenchymal Stem Cells ◽

Graphene Nanoparticles

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Ultra-sensitive diagnosis of orthotopic patient derived hepatocellular carcinoma by Fe@graphene nanoparticles in MRI

RSC Advances ◽

10.1039/c6ra23511e ◽

2016 ◽

Vol 6 (115) ◽

pp. 113919-113923 ◽

Cited By ~ 11

Author(s):

Chao Zhang ◽

Jing Ren ◽

Yutong Yang ◽

Dunhui Wang ◽

Jian He ◽

...

Keyword(s):

Hepatocellular Carcinoma ◽

Cancer Detection ◽

Diagnostic Ability ◽

Magnetic Performance ◽

Graphene Nanoparticles ◽

Low Cytotoxicity

mPEG-DSPE modified Fe/graphene nanoparticles showed low cytotoxicity and high magnetic performance, providing super MRI diagnostic ability for cancer detection.

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Wear Behavior of TiB2/GNPs and B4C/GNPs Reinforced AA6061 Matrix Composites

Journal of Tribology ◽

10.1115/1.4049595 ◽

2021 ◽

Vol 143 (11) ◽

Author(s):

Safa Polat ◽

Yavuz Sun ◽

Engin C¸evik

Keyword(s):

Wear Behavior ◽

Sem Analysis ◽

Matrix Composites ◽

X Ray Diffraction ◽

Pressure Infiltration ◽

X Ray ◽

Wear Rates ◽

Graphene Nanoparticles ◽

Infiltration Method ◽

Scanning Electron

Abstract In this study, it was aimed to investigate the effects of reinforcements used for improving the thermal properties of AA6061 alloy on wear resistance. For this purpose, AA6061 matrix composites were produced by pressure infiltration method using ceramic microparticles (TiB2 and B4C) and graphene nanoparticles (GNPs). The produced composites were first characterized by porosity measurement, X-ray diffraction (XRD), and scanning electron microscopy (SEM) analysis. Then, the wear behavior was examined under three different loads (20–40–60 N) with the reciprocating ball on the flat method in a dry environment. Specific wear-rates were calculated according to the Archard principle by measuring the depth and width of the traces after tests with a profilometer. Wearing mechanisms were determined with the help of optical and microstructure images. According to the obtained results, it was found that B4C + GNPs reinforced samples were more resistant to abrasion at low loads, but TiB2 + GNPs reinforced samples were higher at higher loads.

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