The Donald M. Mattox Tutorial Program
Pick up a lunch in the Exhibit Hall and join the Tutorial
2008 51st SVC Annual Technical Conference
April 19-24, 2008
Hyatt Regency Chicago on the River Walk, Chicago IL
Monday Afternoon
Principles and Perspectives of Atmospheric Thermal Plasmas for Coating
Monday Afternoon, April 21, 11:50 p.m. –12:30 p.m.
Presenter: Joachim Heberlein, University of Minnesota
The principal advantage of atmospheric pressure plasmas for materials processing is the high energy density that allows fast processing rates combined with improved control over the atmosphere compared to combustion based processes. Two thermal plasma coating technologies will be discussed: (1) thermal plasma spray technologies (including plasma spraying and wire arc spraying), and (2) thermal plasma chemical vapor deposition. Industrial applications for thermal plasma spray coatings are steadily expanding as the controls over the process keep improving, and as new process varieties are emerging offering special coating properties. Thermal plasma CVD offers relatively high deposition rates, however, the coating quality remains tied to relatively high substrate temperatures or very high rates of heat removal from the substrate, limiting the applications of the technology. Some relatively new developments will be mentioned in which an atmospheric pressure plasma is expanded into a reduced pressure chamber, leading to a coating process which can combine plasma spraying and thermal plasma CVD. Such a process is of interest when nanophase coatings shall be deposited.
J.V.R. Heberlein received a Diploma in Physics from the Technical University Stuttgart, Germany, and a Ph.D. degree in Mechanical Engineering from the University of Minnesota in 1966 and 1975, respectively.
From 1975 to 1989 he was at the Westinghouse R&D Center involved in a variety of plasma related applications, including as manager for Applied Plasma Research. Since 1989 he has been at the Mechanical Engineering Department at the University of Minnesota working in the areas of plasma heat transfer, electrode effects, plasma instabilities and various plasma process developments, in particular for plasma deposition of special coatings and for nanoparticle synthesis. He has authored or co-authored more than 280 publications and 6 book chapters, and holds 12 patents. He was awarded the grade of Fellow by ASM International, and was elected to the Thermal Spray Hall of Fame of the Thermal Spray Society.
Wednesday Afternoon
Chromogenics: From Motorcycle Helmets to Energy Efficient Buildings
Wednesday Afternoon, April 23 12:30 p.m. –1:10 p.m.
Presenter: Claes G. Granqvist, The Angstrom Laboratory, Uppsala University, Sweden
Chromogenic thin films can change their optical properties upon light exposure, heating, or electrical charging. This talk will give a popular overview of these new technologies with emphasis on electrochromics, i.e., devices that can be viewed as thin-film batteries whose charging state shows up as optical absorption. Simple descriptions of functional principles will be followed by discussions of a number of emerging technologies for applications ranging from variable-transparency helmet visors for safe motorcycle riding to “smart windows” and glass facades in buildings with improved energy efficiency and large indoors comfort.
Claes-Göran Granqvist has been Professor of Solid State Physics at the Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Sweden, since 1993. He was formerly Professor of Experimental Physics at Gothenburg University, Sweden, in 1989-1993. Granqvist’s research during the past several years has covered materials, mostly PVD-deposited thin films, for energy efficiency and solar energy applications particularly in the built environment. Variable-transmittance "smart" windows is one example, which also forms the basis of ChromoGenics Sweden AB, a company founded by Granqvist and his collaborators and presently employing some 15 persons. Other research interests include nano-science and sensor science. Granqvist has published more than 630 scientific papers and many books and proceedings volumes. He has an Honorary Doctorate from UNI (Lima, Peru), is fellow of SPIE, is honorary member of the Indian Materials Society, and member of the Royal Swedish Academy of Science and The Royal Swedish Academy in Engineering Sciences.