Research Output per year
A FIB lift-out sample was made from a wear-resistant carbon coating deposited by high power impulse magnetron sputtering (HIPIMS) with Mo and W. TEM analysis found columnar grains extending the whole ∼1800 nm thick film. Within the grains, the carbon was found to be organised into clusters showing some onion-like structure, with amorphous material between them; energy dispersive X-ray spectroscopy (EDS) found these clusters to be Mo- and W-rich in a later, thinner sample of the same material. Electron energy-loss spectroscopy (EELS) showed no difference in C-K edge, implying the bonding type to be the same in cluster and matrix. These clusters were arranged into stripes parallel to the film plane, of spacing 7-8 nm; there was a modulation in spacing between clusters within these stripes that produced a second, coarser set of striations of spacing ∼37 nm.
- carbon coatings
- thick film
Mandal, P., 2015, Sheffield: Sheffield Hallam University. 261 p.
Research output: Thesis › Doctoral Thesis
Sharp, J., Castillo Muller, I., Mandal, P., Abbas, A., West, G., Rainforth, W. M., Ehiasarian, A., & Hovsepian, P. (2015). Cross sectional TEM analysis of duplex HIPIMS and DC magnetron sputtered Mo and W doped carbon coatings. Journal of Physics: Conference Series, 644, . https://doi.org/10.1088/1742-6596/644/1/012011