Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements

Orhan, O.; Haffner-Staton, E.; La Rocca, A.; Fay, M.

Abstract

This work characterises soot nanoparticles by electron tomography using Weighted Back Projection algorithm and appraises the uncertainties in two-dimensional calculations by comparison with 3D parameters for flame-generated soot and diesel soot-in-oil. Bright field TEM was used to capture 2D images of soot. Large uncertainties exist in 2D-measured morphological parameters. The flame-generated particle showed an extensive 3D structure while the soot-in-oil was notably two-dimensional. Morphological parameters of flame-generated soot and diesel soot-in-oil were different; primary particles, volume, and surface area varied significantly over the range of viewing angle, with differences as large as 60%. 2D flame-generated soot volume underestimated 3D measurements by 38%; soot-in-oil 2D and 3D-derived volumes were within 4%. 2D calculations of fractal dimension generally underestimate the 3D value.

Citation

Orhan, O., Haffner-Staton, E., La Rocca, A., & Fay, M. (2016). Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements. Tribology International, 104, 272-284. https://doi.org/10.1016/j.triboint.2016.09.015

• Journal Article Type: Article
• Acceptance Date: Sep 8, 2016
• Online Publication Date: Sep 9, 2016
• Publication Date: Dec 1, 2016
• Deposit Date: Sep 8, 2016
• Publicly Available Date: Sep 9, 2016
• Journal: Tribology International
• Print ISSN: 0301-679X
• Electronic ISSN: 1879-2464
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 104
• Pages: 272-284
• DOI: https://doi.org/10.1016/j.triboint.2016.09.015
• Keywords: Soot Characterisation, 2D-TEM, Fractal Dimension, Electron Tomography, Volume Reconstructions
• Public URL: https://nottingham-repository.worktribe.com/output/825693
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0301679X1630322X