نتایج جستجو برای: nano sintering additives
تعداد نتایج: 77312 فیلتر نتایج به سال:
There has been much effort in recent years to develop methods for producing materials with nanometer scale substructure. The desire is to control the macroscopic material properties such as toughness, elasticity and porosity by tailoring the microstructure. For ceramic materials, one approach is to synthesize nano-scale particles and develop methods for compressing and sintering these powders. ...
Sintered blanks for spherical bodies of rolling from silicon nitride ceramics were obtained using the addition an yttrium-containing organoalumoxane ― element organic oligomer, soluble in traditional solvents and pyrolysis into oxide aluminum-sintering additive a given mass ratio Al2O3/Y2O3 = 3/1. Studies conducted thermogravimetry, X-ray phase analysis, optical electron scanning microscopy sho...
Suspension plasma spraying is a process that enables the production of finely grained nanometric or submicrometric coatings. The suspensions are formulated with the use of fine powder particles in water or alcohol with some additives. Subsequently, the suspension is injected into plasma jet and the liquid additives evaporate. The remaining fine solids are molten and subsequently agglomerate or ...
A new approach of utilizing microwave to pattern gradient concentric silver nanoparticle ring structures has been presented. The width and height of a single ring and the space between adjacent rings can be adjusted by changing the silver colloidal concentration and the microwave output power. By simply enhancing the ambient vapour pressure to the saturated value during microwave-assisted evapo...
Using of nanoparticles in Composite solid propellant formulations has extended in recent years. Nano additives increases burning rate of these formulations and consequently improves performance, because of their high reactivity potential, high catalytic activity and high surface area to volume ratio. However, poor dispersibility of nanoparticles leads to agglomeration in the binder and thus r...
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