rheological characteristics of al2o3, cuo and tio2 nano particles were investigated in oil asthe base fluid at 1 and 2 wt.%. constitutive relations for non-newtonian fluid were discussedbased on the power-law model. measured viscosities of each nanofluid were used to evaluatethe power-law and consistency index. results indicated that the nanofluid viscosity decreasedby increasing the concentrat...

We explored the B-C-O system at pressures in the range 0-50 GPa by ab initio variable-composition evolutionary simulations in the hope of discovering new stable superhard materials. A new tetragonal thermodynamically stable phase B4CO4, space group I4[combining macron], and two low-enthalpy metastable compounds (B6C2O5, B2CO2) have been discovered. Computed phonons and elastic constants show th...

Carbon nanomaterials (such as graphene, carbon nanotubes and nano-diamond) are widely used to synthesize metal matrix composites strengthen metals such Ti, Al Cu. However, severe aggregation of these nano-scale reinforcements within the has been a serious issue achieve good performance composites. In this study, we employed an in-situ co-precipitation method decorate reduced graphene oxides wit...

The application of a higher corrosion resistance coating modified with nano additions can effectively decrease or prevent from occurring. In the present work, novel method is successfully developed for modification carbon steel surfaces aiming high using Sn—4% Zn alloy/nanoparticle composite (NiO+ Al2O3) coating. coatings were deposed on direct tinning process that involved power mixture alloy ...

objectives: maintaining pulp vitality is a main goal in restorative dentistry. introduction of pulp capping agents paved the way to eliminate the shortcomings of these materials and obtain successful restorations. on the other hand, nanotechnology is an emerging field of science with increasing use in dental materials. this study sought to assess the effect of addition of nano-tio2, nano-sio2 a...