The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 2004
Filed:
Nov. 01, 2000
Guenter Knoll, Stuttgart, DE;
Gert Lindemann, Lichtenstein, DE;
Friederike Lindner, Gerlingen, DE;
Matthias Wiedmaier, Ebersbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for manufacturing composite materials from a parent substance containing silicon nitride and metal silicide, having fixed electrical properties. The molded articles are made, virtually with their final contours, prior to a sintering operation. The parent substance containing Si N and a metal silicide is subjected to a gas pressure sintering in a nitrogenous atmosphere. The metal silicide is of the form Me Si , where Me is a metal. As a function of a sintering temperature, a lower limit of partial nitrogen pressures is selected so that Si N is stable at the lower limit and an upper limit of the partial nitrogen pressures is selected so that Me Si is stable at the upper limit. The resulting composite material is a silicon-containing composite material made of Si N and the metal silicide. The metal silicide is selected from the group of Nb Si , V Si , Ta Si and W Si .