德国弗劳霍夫研究所Michael Moseler教授讲学通知
时间:2017-9-6 11:23:03   阅读:   标签: 机电学院 讲学 研究生

应机电工程学院孙涛教授邀请,德国弗劳恩霍夫材料力学研究所Michael Moseler教授来访我校,访问期间将举办学术报告进行交流,欢迎相关师生参加。

 

报告题目:Material complexity and atomic scale models in tribology

报告人:Michael Moseler

报告时间:2017911日周一上午9:00-11:00

报告地点:新技术楼210会议室

 

Abstract

Elevated stresses and high shear strains in the buried interface between two sliding bodies drive extreme plastic deformation and chemical reactions that result in the formation of metastable phases that are not accessible by regular thermo-chemistry. The resulting tribolayers control friction and wear in many academic and industrial applications. Experimental studies of tribomaterials are still restricted to an ex-situ characterisation by highly resolved TEM [1] and spectroscopic techniques allowing for post-mortem speculations about the underlying processes. This talk presents several examples for a complementary approach that employs atomistic quantum and classical molecular dynamics to elucidate plasticity and mechano-chemistry in sliding contacts. Various mechanisms that govern the formation of tribomaterials in metals [2,3], ceramics [4,5] and carbon hard coatings [6,7,1] will be described. For some cases the impact of environmental gases will be discussed [8].

 

[1]   M. I. De Barros Bouchet, C. Matta, B. Vacher, T. Le-Mogne, J. M. Martin, J. von Lautz, T. Ma, L. Pastewka, J. Otschik, P. Gumbsch, and M. Moseler, Carbon87, 317 (2015)

[2]   P. A. Romero, T. T. Järvi, N. Beckmann, Matous Mrovec, M. Moseler,Phys. Rev. Lett. 113, 036101 (2014)

[3]   N. Beckmann, P. A. Romero, D. Linsler, M. Dienwiebel, U. Stolz, M. Moseler, P. Gumbsch. Phys. Rev. Applied 2, 064004 (2014)

[4]   P. Stoyanov, P.A. Romero, T. T. Järvi, L. Pastewka, M. Scherge, P. Stemmer, A. Fischer, M. Dienwiebel, and M. Moseler,Tribol. Lett., 50, 67 (2013)

[5]   P. Stoyanov, R. Merz, P. Romero, F. C. Wählisch, O. T. Abad, R. Gralla, P. Stemmer, M. Kopnarski, M. Dienwiebel, M. Moseler, R. Bennewitz,ACS Nano 9, 1478 (2015)

[6]   L. Pastewka, S. Moser, P. Gumbsch, and M. Moseler,Nature Mater. 10, 34 (2011)

[7]   J. von Lautz, L.Pastewka, P.Gumbsch, M.Moseler,Tribol. Lett.63:26 (2016)

[8]   T. Kuwahara, G.Moras, M.Moseler, Phys.Rev. Lett. (2017)

 

 

CV

Prof. Dr. Michael Moseler received his diploma and Ph.D. degrees in Physics from the Albert-Ludwigs-University in Freiburg, Germany in 1994 and 1998, respectively. After his PostDoc at the Georgia Institute of Technology in Atlanta he became leader of a computational materials science group at the Fraunhofer Institute for Mechnanics of Materials in Freiburg in 2002. In addition to this position he is Professor for Modelling and Simulation of Functional Nanosystems at the Physics department of the Albert-Ludwigs-University in Freiburg. His research activities cover classical molecular dynamics simulations of friction, lubrication and wear processes as well as phase transformations in tribosystems. In addition he studies tribochemical processes using density functional theory. His previous work covered density functional calculations of finite size effects in free and supported clusters including their catalytic properties. Further activities were in nanofluidics – (e.g. jet formation, capillary impregnation and whetting), melting of nanoparticles and multiscale models for thin film growth.

 

发布:杨云峰 |  审核:李骁宇 |  来源: 机电学院