Table of Contents
ISRN Mechanical Engineering
Volume 2011, Article ID 304129, 9 pages
Research Article

Investigation of the Adhesion Promoter Distribution in Porous Ceramic Precursors

1Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstraße 11, 79108 Freiburg, Germany
2Department of Microsystems Engineering, Laboratory for Process Technology, University of Freiburg, Georges-Koehler-Avenve 103, 79110 Freiburg, Germany

Received 31 January 2011; Accepted 31 March 2011

Academic Editors: I. Emri, T. Ohara, and V. V. Zozulya

Copyright © 2011 Volker Steier et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The purpose of this paper is to improve the mechanical properties of polymer infiltrated ceramics (PICs) by the enhancement of the adhesion between both components. To improve the interface adhesion, an adhesion promoter (silane) was used. The silane distribution in the precursors was studied using Raman and IR spectroscopy. Inhomogeneous silane distribution was found after applying a common surface modification method. In this paper, different silane modification methods were developed. The methods differ in the manner of the infiltration solution, the point of silane activation, and the infiltration pressure. The impacts achieved by the use of these methods were analyzed, and different adhesion mechanisms between silane molecules and the ceramic surface were established. As a result, a unique infiltration method which generates homogeneous silane distributions was developed. The interface adhesion depends among other parameters on the silane amount on the surface. The adjustment of the silane amount in the precursor was realized by the use of IR-spectroscopy.