nanoindentation techniques are widely used for the study of nanomechanical properties of thin nanocomposite coatings. theoretical concepts and practical use of nanoindentation method are summarized with reporting the applications of these tests in characterization of some particular thin nanocomposite hybrid coatings prepared by sol-gel process. the better mechanical properties can be obtained ...

objective(s): the aim of this study was to synthesis new dental nanocomposites reinforced with fabricated glass nanoparticles and compare two methods for fabrication and investigate the effect of this filler on mechanical properties. materials and methods: the glass nanoparticles were produced by wet milling process. the particle size and shape was achieved using psa and sem. glass nanoparticle...

the mechanical properties including elastic stiffness constants as well as bulk modulus of palladium (pd) nanowire were calculated in the constant temperature and pressure (npt), ensemble by molecular dynamics (md) simulation technique. the quantum sutton-chen (q-sc) many-body potential was used to calculate the cohesive energy as well as forces experience by every atoms. the temperature and pr...

In this study, composite samples of WE43 (Mg-4Y-3RE-Zr) reinforced with nano-B4C particles in different ratios (0.5 and 2 wt.%) were prepared by spark plasma sintering (SPS). The powders mixed a 3-dimensional ball mill at 300 rpm. then hot pressed under 35 MPa pressure 525 °C for 6 min. XRD FESEM-EDS instruments used to characterize the samples. Microhardness wear tests performed designate mech...

High resolution backscatter electron (BSE) imaging of colloidal gold with field emission scanning electron microscopy (FESEM) depends upon selection of accelerating voltage, beam current, working distance between specimen and backscatter detector, type of backscatter detector, plus the nature and thickness of the metal coating used to improve conductivity and signal collection. BSE imaging of a...

Poly(butylene succinate) (PBS) is one of the contaminants in Poly(ethylene terephthalate) (PET) recycling process. It known that high contents PBS PET significantly reduce properties, but effect low on has yet to be studied. This work studied influence recycled PET. Five formulations were prepared, and properties relative affinity, mechanical, thermal, disintegration under composting conditions...

the use of agriculture residues as filler in composites is increasing due to their strength, abundance and low cost. soya stalks show promising renewable natural fiber. in polyethylene composites the physical and mechanical properties (flexural resistance, tensile, impacted absorbed energy, water uptake and thickness swelling) was examined at different composites. the results showed that, the m...

objective: endothelium is a selective and permeable membrane for transferring nutrients and vital components to arterial wall. endothelial damage might lead to altered biological function of endothelium and clinical consequences such as atherosclerosis. blood pressure pulse always exerts circumferential tension to the arterial wall. hence, such tension together with other loads, play important ...

The influence of boron as well with niobium additions on the phase transformation behaviour, resultant microstructures, and mechanical properties thermomechanically controlled hot-rolled direct-quenched low-carbon bainitic steel plates was investigated. Also, probable factors that could inhibit their specific merits hardenability, behaviour properties, were studied. Continuous cooling diagrams ...

Crystalline tantalum thin films of about 500nm thickness were deposited on AISI 316L stainless steel substrate using magnetron sputtering. To investigate the nano-mechanical properties of tantalum films, deposition was performed at two temperatures (25°C and 200°C) on TaNx intermediate layer with different N2/Ar flow rate ratio from 0 to 30%. Nano-indentation was performed to obtain the mechani...