Department of Materials

Staff

Dr Mark Jepson B.Eng(Hons), PhD

Photo of Dr Mark Jepson

Senior Lecturer in Metallurgy & Microscopy

Background:

Mark completed his undergraduate degree in Automotive Materials at Loughborough University in 2004 in the Department of Materials. He then went on to study for a PhD in oxidation of stainless steels with Dr Rebecca Higginson which he completed in 2008.

After his PhD he worked as a Research Associate at the Department of Materials Science and Engineering at the University of Sheffield studying secondary electron dopant contrast using scanning electron microscopy. During this time he conducted pioneering research into the use of Helium microscopes (HeIM) for the examination of semiconductors in collaboration with Harvard University and Carl Zeiss.

In 2010 Mark returned to Loughborough to take a position as a Research Associate in the Department of Materials working with Professor Rachel Thomson on steels and superalloys for power plant applications and was promoted to Lecturer in Metallurgy and Microscopy in July 2012.

  • Oct 2001 – Jul 2004 – B.Eng in Automotive Materials, Loughborough University
  • Oct 2004 – Apr 2008 – PhD in oxidation of stainless steels, Loughborough University
  • Sep 2007 – Feb 2010 – Research Associate, The University of Sheffield
  • Feb 2010 – Jul 2012 – Research Associate, Loughborough University
  • Jul 2012 – Present – Lecturer in Metallurgy and Microscopy, Loughborough University

Qualifications: 

  • BEng Automotive Materials (Loughborough)
  • PhD in the topic of oxidation of metals (Loughborough)
  • Fellow of the Royal Microscopical Society (FRMS)
  • Fellow of the Higher Education Academy

Outline of main research interests:

  • Microstructural evolution of superalloys and steels during high temperature service
  • Microstructure and evolution of additive manufactured materials for high temperature applications
  • High temperature oxidation of metals
  • Contrast mechanisms and image formation in electron and ion beam microscopy
  • Secondary electron imaging of semi-conductors
  • Energy filtered secondary electron imaging

 

 

Current teaching responsibilities:

  • PHF110 Basic Physics and Materials (Foundation Year Module)
  • MPC120 Vehicle and Component Design
  • MPP563 Industrial Case Studies
  • MPP163 Industrial Case Studies
  • MPA206 Introduction to Metals Processing
  • MPB104 Advanced Materials Characterisation
  • MPA202 Experimentation

 

Recent publications: 

  • Rodenburg, C., Viswanathan, P., Jepson, M. A. E., Liu, X., & Battaglia, G. (2014). Helium ion microscopy based wall thickness and surface roughness analysis of polymer foams obtained from high internal phase emulsion. Ultramicroscopy, 139, 13-19. doi:10.1016/j.ultramic.2014.01.004
  • Yao, Z., Degnan, C. C., Jepson, M. A. E., & Thomson, R. C. (2013). Effect of rejuvenation heat treatments on gamma prime distributions in a Ni based superalloy for power plant applications. Materials Science and Technology, 29(7), 775-780. doi:10.1179/1743284712Y.0000000199
  • Li, L., MacLachlan, R. C., Jepson, M. A. E., & Thomson, R. C. (2013). Microstructural Evolution of Boron Nitride Particles in Advanced 9Cr Power Plant Steels. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 44(7), 3411-3418. doi:10.1007/s11661-013-1642-x
  • Jepson, M. A. E., & Higginson, R. L. (2012). In situ observation of the oxidation of S32101 duplex stainless steel at 900°C. Corrosion Science, 59, 263-269. doi:10.1016/j.corsci.2012.03.011
  • Microstructural Evolution of Boron Nitride Particles in Advanced 9Cr Power Plant Steels, L. Li, R. MacLachlan, M. A. E. Jepson and R. C. Thomson, Metallurgical and Materials Transactions A, Accepted Jan 2013. Available online(DOI:10.1007/s11661-013-1642-x)
  • The Effect of Rejuvenation Heat Treatments on Gamma Prime Distributions in a Ni-Based Superalloy for Power plant Applications, Z. Yao, C. G. Degnan, M. A. E. Jepson and R. C. Thomson, Materials Science and Technology, Accepted Dec. 2012. Available online (DOI:http://dx.doi.org/10.1179/1743284712Y.0000000199)
  • In-situ Observation of the Oxidation of S32101 Duplex Stainless Steel at 900°C, M. A. E. Jepson and R. L. Higginson, Corrosion Science, 59, 263, 2012.
  • Resolution Limits of Secondary Electron Dopant Contrast in Helium Ion and Scanning Electron Microscopy, M. A. E. Jepson, X. Liu, D.C. Bell, D. Ferranti, B. J. Inkson and C. Rodenburg, Microscopy and Microanalysis, 17, 637, 2011.

 

Selected publications: 

  • Energy Selective Scanning Electron Microscopy to Reduce the Effect of Contamination Layers on Scanning Electron Microscope Dopant Mapping, C. Rodenburg, M. A. E. Jepson, E. G. T. Bosch, M. Dapor, Ultramicroscopy, 110, 1185,2010.
  • Quantitative Dopant Contrast in the Helium Ion Microscope, M. A. E. Jepson, B. J. Inkson, X. Liu, L. Scipioni and C. Rodenburg, EPL, 86, 26005, 2009.
  • Oxidation of Low Nickel Duplex Stainless Steels in Simulated Propane Combustion Products at 1000°C, M. A. E. Jepson and R. L. Higginson, Corrosion Science. 51, 588, 2009.
  • The Use of EBSD to Characterise the High Temperature Oxides Formed on Low Alloy and Stainless Steels, R. L. Higginson, M. A. E. Jepson and G. D. West, Materials Science and Technology, 22, 1325, 2006.
    This paper was awarded the IOM3 Cook Ablett award of 2008.

 View central publications database

Additional information: 

Outreach and media activities:

  • “Exploding Ducks and the Science of Stuff” presentation at the Loughborough University Science and Engineering Week Family Fun Day Event
  • “Recreating the First Tin Can” for BBC Website Video Content - http://www.bbc.co.uk/news/magazine-22093655