Ceramic Components in Machines, Cologne and Aachen, West Germany, Maastricht, The Netherlands, and Brussels, Belgium, June 14-27, 1989: Foreign Trip Report.

摘要

Structural ceramic research at the DLR is heavily focussed on silicon carbide whisker reinforced silicon nitride matrix composites and upon processing of monolithic silicon nitride compositions. Extensive research is also underway on aircraft alloys, including metal-polymer fiber and carbon-carbon composites. The IKKM, a new German research institute in Aachen, has a growing program focussed on characterizing ceramic components by techniques which can ultimately be used by German industry to produce highly reliable structural ceramic products. Residual stress, ultrasonic, and x-ray tomography techniques are the main thrust of the present program. The travelers attended the first meeting of the European Ceramic Society held at Maastricht, The Netherlands. The IEA Annex II Executive Committee held a meeting and voted approval of two new subtasks, Subtask 5 on mechanical properties and Subtask 6 on ceramic powders. An overview of the newly formed European Community Research and Development Program on Manufacturing Technologies and Advanced Materials for 1989--1992 was gained during a visit to the Commission of the European Communities in Brussels, Belgium.