carbon nano powder can replace scarce metals
Many scientist are very interested in scarce metals because of there special features but there are too many obstacles. On the hand, they are scarce; on the other hand, they are hard to get from the sources.Scarce metals are found in a wide range of everyday objects around us.
They are complicated to extract, difficult to recycle and so rare that
several of them have become "conflict minerals" which can promote
conflicts and oppression. A survey at Chalmers University of Technology
now shows that there are potential technology-based solutions that can
replace many of the metals with carbon nanomaterials, such as graphene.
They can be found in your computer, in your mobile phone, in almost all other electronic equipment and in many of the plastics around you. Society is highly dependent on scarce metals, and this dependence has many disadvantages.
Scarce metals such as tin, silver, tungsten and indium are both rare and difficult to extract since the workable concentrations are very small. This ensures the metals are highly sought after - and their extraction is a breeding ground for conflicts, such as in the Democratic Republic of the Congo where they fund armed conflicts.
In addition, they are difficult to recycle profitably since they are often present in small quantities in various components such as electronics.