Is there any method that we can use to control them, kindly share your experience.
Dear K V Arun
If the base matrix is AA6XXX series and the RPs is nano oxides
I am currently working on Rare Earth Metal and it size is controlled by concentration and amount of oleic acid in the prepartion of nanoparticle. Another factor is Temperature range and it duration.
I was synthesized rare earth metal oxide i used oxalic acid to control size and aggregation of nano particles
You can use surfactants to control the size as well the stability of the nanoparticles but as said by K V Arun it depends on which matrix you are going to use.
Dear Tanvir,
our long-standing work may be useful to you, but it is in Russian:
https://www.researchgate.net/publication/306072908_Analysis_of_the_structural_transformations_and_size_distribution_of_ultrafine_magnetite_particles
https://www.researchgate.net/publication/231103721_The_effective_method_based_on_IR_annealing_for_manufacturing_novel_carbon_nanocrystalline_material_and_multifunctional_metal-polymer_nanocomposites
You can control both matrix and reinforcement powder particles in two stages but always pay more attention to the nanoparticles as they tend more to agglomerate. These stages include:
1- your as-received powders - initial powder particles should be produced at your desired size and shape. particle fabrication methods such as gas atomizing should be well controlled in terms of the process parameters as well as the working environment. Apart from the size of the particles, having sphere particles is preferred as they can form less porous structures.
2- Before the compaction and consolidation stages, to avoid agglomeration, you can use stearic acid and ultrasonic vibration to break the possible agglomerated particles.
For further details, you can have a look at this paper:
Article Warm dynamic compaction of Al6061/SiC nanocomposite powders
Dear Tanvir,
For further information, you can look for this papers:
1) Temperature effect on mechanical and tribological characterization of Mg–SiC nanocomposite fabricated by high rate compaction
2) A novel approach for dynamic compaction of Mg–SiC nanocomposite powder using a modified Split Hopkinson Pressure Bar
3) An experimental investigation into wear resistance of Mg-SiC nanocomposite produced at high rate of compaction
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Composites
- Nanocomposites