Carbon release by selective alloying of transition metal carbides

Details Carbon release by selective alloying of transition metal carbides Carbon release by selective alloying of transition metal carbides

2011-04-22

arxiv.org/abs/1104.4469v1

Physics

Condensed Matter

Materials Science

9 pages, 6 figures

Scientific paper

We have performed first principles density functional theory calculations on TiC alloyed on the Ti sublattice with 3d transition metals ranging from Sc to Zn. The theory is accompanied with experimental investigations, both as regards materials synthesis as well as characterization. Our results show that by dissolving a metal with a weak ability to form carbides, the stability of the alloy is lowered and a driving force for the release of carbon from the carbide is created. During thin film growth of a metal carbide this effect will favor the formation of a nanocomposite with carbide grains in a carbon matrix. The choice of alloying elements as well as their concentrations will affect the relative amount of carbon in the carbide and in the carbon matrix. This can be used to design the structure of nanocomposites and their physical and chemical properties. One example of applications is as low-friction coatings. Of the materials studied, we suggest the late 3d transition metals as the most promising elements for this phenomenon, at least when alloying with TiC.

Affiliated with

Also associated with

No associations

Rating

Carbon release by selective alloying of transition metal carbides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Carbon release by selective alloying of transition metal carbides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon release by selective alloying of transition metal carbides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-330942