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Welcome

to Ångström Tribomaterials Group, a part of The Applied Materials Science Division of Uppsala University. Our group conducts research and graduate education focusing on Tribology, including Surface Engineering and Materials.

Our research in tribology aims towards improving or developing new materials, coatings, surfaces structures, etc. "Better tribology" may lead to fantastic benefits in terms or quality, energy, economy, environment & health, safety, raw material savings, and much more. Please learn more about the benefits of tribological research and development and more about our research.

We teach undergraduate courses (civilingenjörskurser) on materials science, surface analysis, electron microscopy, tribology and surface engineering.

Site map

staffan

Contact
Prof. Staffan Jacobson
Uppsala University
Dept. Engineering Sciences
Box 534
SE-751 21 UPPSALA
Sweden

staffan.jacobson@angstrom.uu.se
Tel: +46 - 18 - 471 30 88
Fax: +46 - 18 - 471 35 72

Upcoming Events

Ångströms Tribomaterialdagar (Ångström Tribomaterials Days) is our premier annual event (in Swedish) where we interact with engineers representing Swedish industry and our academic colleagues.

Årets tribomaterialdagar kommer att gå av stapeln 27-28 augusti, (OBS: ändring från den ursprungliga planen). Lär mer om dagarna, gör en intresseanmälan och se preliminärprogrammet här.

Vi ger årligen vår populära kurs Svepelektronmikroskopi i praktik och teori , senast 4-5 februari 2014. Anmäl intresse och läs mer här.

Aktuella förslag på examensarbeten vid tribomaterialgruppen.


News

Jonna Holmgren joined the group in January 2014 as PhD student in our new project on automotive parts together with Kongsberg Automotive. Welcome!

Peter Forsberg succesfully defended his thesis, Combustion valve wear – A tribological study of combustion valve sealing interfaces, September 20 2013. He is now employed at ABB in Ludvika. Congratulations!

Fredrik Gustavsson, who successfully defended his thesis Triboactive component coatings in February 2013, has a new job as R&D Engineer at Sandvik Materials employed at Technology. Congratulations!

Irma Heikkilä successsfully defended her PhD thesis "The Positive Effect of Nitrogen Alloying of Tool Steels Used in Sheet Metal Forming" on June 12. Congratulations!

Julia Gerth, who successfully defended her PhD thesis "Tribology at the Cutting Edge" in December 2012 has a new job as Method Technician at Scania. Congratulations! (Read more and download the thesis abstract here)"

Our researchers PhD student Maria Pettersson and recent PhD Frida Riddar were both awarded Ångström Academy's Innovation Awards of the Year, on May 16 2013, for their research with industrial and commercial potential. The awards are made possible by the economical support from Handelsbanken. Congratulations!

Our new theory explaining why a curling stone actually curls has caused a lot of interest in the press and radio. Our press release can be read here, and in a Swedish version here. The scientific paper presenting the details: The asymmetrical friction mechanism that puts the curl in the curling stone by Harald Nyberg, Sara Alfredsson, Sture Hogmark, and Staffan Jacobson was awarded the Ludema Best Paper Award at the Wear of Materials conference, held in Portland 14-18 April 2013.

News archive here

 

New publications
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All the latest publications can be found here)

Kaplan, B., Markström, A., Blomqvist, A., Norgren, S. and Selleby, M., Thermodynamic Analysis of the Co-Cr-C System, Calphad available on line June 7 (2014)

Heinrichs, J., Jenei, I. Z. and Jacobson, S., Morphology and Composition of Tribofilms Deposited Using Tribochemical Burnishing Technique, Tribology - Materials, Surfaces & Interfaces 8 (2014) 14-20

Gerth, J., Gustavsson, F., Collin, M., Andersson, G., Nordh, L. G., Heinrichs, J. and Wiklund, U., Adhesion Phenomena in the Secondary Shear Zone in Turning of Austenitic Stainless Steel and Carbon Steel, J. Materials Processing Technology, http://dx.doi.org/10.1016/j.jmatprotec.2014.01.017

Forsberg, P., Elo, R. and Jacobson, S., The Importance of Oil and Particle Flow for Exhaust Valve Wear – an Experimental Study, Tribology International 69 (2014) 176-83.

Forsberg, P., Debord, D. and Jacobson, S., Quantification of Combustion Valve Sealing Interface Sliding—a Novel Experimental Technique and Simulations, Tribology International 69 (2014) 150-55.

Sundberg J, Nyberg H, Särhammar E, Gustavsson F, Kubart T, Nyberg T, Jacobson, S, Jansson, U,"Influence of Ti addition on the structure and properties of low-friction W–S–C coatings", Surface and Coatings Technology, 232 (2013): 340-8.

Norgren, Susanne, and A. Kusoffsky, "On the solubility of chromium in the cubic carbide and M7C3 carbide in the WC–Co–Cr–Me systems (Me = Ti, Nb, Ta and Zr)". Int. Journal of Refractory Metals and Hard Materials, 40 (2013 ): 24–26.

Gustavsson, F., S. Jacobson, A. Cavaleiro, and T. Polcar, "Ultra-low friction W-S-N solid lubricant coating". Surface & Coatings Technology 303 (2013): 286-96.

Pettersson, M., S. Tkachenko, S. Schmidt, T. Berlind, S. Jacobson, L. Hultman, H. Engqvist, and C. Persson, "Mechanical and tribological behavior of silicon nitride and silicon carbon nitride coatings for total joint replacements". Journal of the Mechanical Behavior of Biomedical Materials, Vol 25, 41–47, June 2013 http://dx.doi.org/10.1016/j.jmbbm.2013.05.002

Olander, P., P. Hollman, and S. Jacobson, Piston ring and cylinder liner wear aggravation caused by transition to greener ship transports – Comparison of samples from test rig and field". Wear 302, 1345–1350,
doi:10.1016/j.wear.2012.12.028 (2013)

Nyberg, H., J. Sundberg, E. Särhammar, F. Gustavsson, T. Kubart, T. Nyberg, U. Jansson, and S. Jacobson, "Extreme friction reductions during initial running-in of W-S-C- Ti low friction coatings". Wear, 302, 987-997, http://dx.doi.org/10.1016/j.wear.2013.01.065, (2013).

Sundberg, J., H. Nyberg, E. Särhammar, K. Kádas, L. Wang, O. Eriksson, T. Nyberg, S. Jacobson, and U. Jansson, "Tribochemically active Ti-C-S nanocomposite coatings". Materials Research Letters, On line May 31 , DOI 10.1080/21663831.2013.802262 (2013)

Grandin, M., and U. Wiklund, "Friction, wear and tribofilm formation on electrical contact materials in reciprocating sliding against silver-graphite". Wear 302 (2013): 1481-9, http://dx.doi.org/10.1016/j.wear.2013.02.007

Forsberg, P., F. Gustavsson, V. Renman, A. Hieke, and S. Jacobson, "Performance of DLC coatings in heated commercial engine oils". Wear, vol. 304, 211–222, DOI 10.1016/j.wear.2013.04.036, (2013)

Gustavsson, F., S. Jacobson, A. Cavaleiro, and T. Polcar, "Frictional behavior of self-adaptive nanostructural MoSeC coatings in different sliding conditions". Wear 303 (2013): pp. 286-96. http://dx.doi.org/10.1016/j.wear.2013.03.032

Nyberg, H., S. Alfredsson, S. Hogmark, and S. Jacobson, "The asymmetrical friction mechanism that puts the curl in the curling stone". Wear, 301, 583-589, (2013), http://dx.doi.org/10.1016/j.wear.2013.01.051

Nyberg, H., S. Hogmark, and S. Jacobson, "Calculated trajectories of curling stones sliding under asymmetrical friction - validation of published models". Tribology Letters, 50, no. 3 (2013): 379-385.

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Copyright © 2014 Ångström Tribomaterials Group

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