%0 Conference Paper %1 citeulike:5765870 %A Pouchon, Manuel A. %A Chen, Jiachao %A Samaras, Maria %A Tharian, Joy %A Hoffelner, Wolfgang %B Proceedings of the Global 2005, Tsukuba, Ibaraki (Japan) 9-13 Oct 2005 %D 2005 %K imported %P 2562--2564 %T Multiscale Approach for Investigating Properties of High Temperature Materials %X Future advanced gas cooled nuclear reactors are planned to operate as combined cycle systems, for electricity production and process heat applications, e.g. for direct hydrogen production. In order to increase the efficiency and to economically produce hydrogen, gas temperatures should reach temperatures of 1000 °C or higher. One of the major concerns in such a system is the structural material; this must potentially withstand the very high heat load under neutron irradiation and corrosive conditions which might arise from an impure He coolant-gas. Highly exposed components consist of the pressure vessel, reactor internals as the guide rods, the gas turbine, pipes and valves. The envisaged long operating time of large components and the time- and space-limited laboratory experiments lead to the necessity of length- and time-extrapolation techniques. At the Paul Scherrer Institute, potential material-candidates of composite ceramic materials, oxide dispersion strengthened steel, and an intermetallic material are investigated. This paper presents recent results, and shows how a multi-scale approach both experimentally and through simulation are employed and linked, in order to realize irradiation experiments, which are short in time, affordable and still produce representative results.

@inproceedings{citeulike:5765870, abstract = {Future advanced gas cooled nuclear reactors are planned to operate as combined cycle systems, for electricity production and process heat applications, e.g. for direct hydrogen production. In order to increase the efficiency and to economically produce hydrogen, gas temperatures should reach temperatures of 1000 °C or higher. One of the major concerns in such a system is the structural material; this must potentially withstand the very high heat load under neutron irradiation and corrosive conditions which might arise from an impure He coolant-gas. Highly exposed components consist of the pressure vessel, reactor internals as the guide rods, the gas turbine, pipes and valves. The envisaged long operating time of large components and the time- and space-limited laboratory experiments lead to the necessity of length- and time-extrapolation techniques. At the Paul Scherrer Institute, potential material-candidates of composite ceramic materials, oxide dispersion strengthened steel, and an intermetallic material are investigated. This paper presents recent results, and shows how a multi-scale approach both experimentally and through simulation are employed and linked, in order to realize irradiation experiments, which are short in time, affordable and still produce representative results.}, added-at = {2009-09-16T11:28:59.000+0200}, author = {Pouchon, Manuel A. and Chen, Jiachao and Samaras, Maria and Tharian, Joy and Hoffelner, Wolfgang}, biburl = {https://www.bibsonomy.org/bibtex/22c10e58de343e8966d1059da164d3ea8/pouchon}, booktitle = {Proceedings of the Global 2005, Tsukuba, Ibaraki (Japan) 9-13 Oct 2005}, citeulike-article-id = {5765870}, interhash = {c142c33021576a7c915c58fe5219a9ac}, intrahash = {2c10e58de343e8966d1059da164d3ea8}, keywords = {imported}, month = {October}, pages = {2562--2564}, posted-at = {2009-09-10 08:19:19}, priority = {0}, timestamp = {2009-09-16T11:29:19.000+0200}, title = {Multiscale Approach for Investigating Properties of High Temperature Materials}, year = 2005 }