(retraction) This article has been retracted: please see Science of Sintering Policy on
Article Withdrawal (http://www.iiss.sanu.ac.rs/forauthors.htm, see
Withdrawal policy). This article has been retracted at the request of Mr.
Bernd Buchberger, Head of Corporate Research and Development of the RHI AG
Technology Center and Mr. Alfons Luftenegger, Head of Innovation and
Intellectual Property Menagement of the RHI AG Technology Center, due to
legal limitations, since the publication of this article was not authorized
by RHI AG or any company within the RHI Group. <br><br><font color="red"><b> Link to the retracted article <u><a href="http://dx.doi.org/10.2298/SOS1302181G">10.2298/SOS1302181G</a></b></u>