EP 1315679 A1 20030604 - GLASS CERAMIC MASS AND CERAMIC ARTICLE
Title (en)
GLASS CERAMIC MASS AND CERAMIC ARTICLE
Title (de)
GLASKERAMIKMASSE UND KERAMIKKÖRPER
Title (fr)
MASSE VITROCERAMIQUE ET ARTICLE CERAMIQUE
Publication
Application
Priority
- DE 0103337 W 20010831
- DE 10043194 A 20000901
Abstract (en)
[origin: WO0218285A1] The invention relates to a glass ceramic mass, comprising at least one oxide ceramic, containing barium, titanium and at least one rare earth metal Rek and at least one glass material, containing at least one oxide with boron and at least one oxide of a rare earth metal Reg. The glass material further contains either an oxide of a tetravalent metal Me4+, or at least one oxide of a pentavalent metal Me5+. A compression of the glass ceramic mass occurs above all by viscous flow. A low vitrification temperature can thus be achieved. Crystallisation products are produced during and/or after the compression. The rare earth oxide and the crystallisation products can be used to pre-determine each of a dielectric material property of the glass ceramic mass in a wide range such as permittivity (15 - 80), Q (350 - 5000) and Tf value (+/- 20 ppm/K). The glass ceramic mass is characterised by a vitrification temperature of below 850 DEG C and can thus find application in LTCC (low temperature cofired ceramics) technology for the integration of a passive electrical component in the volume of a ceramic multi-layer body. Suppression of a lateral shrinkage may be achieved in a composite with a ceramic film blank made from another ceramic material compressed at a higher temperature.
IPC 1-7
IPC 8 full level
C04B 35/46 (2006.01); C03C 8/14 (2006.01); C03C 14/00 (2006.01); H05K 1/03 (2006.01)
CPC (source: EP KR US)
C03C 8/14 (2013.01 - EP US); C03C 14/00 (2013.01 - KR); C03C 14/004 (2013.01 - EP US)
Citation (search report)
See references of WO 0218285A1
Citation (examination)
EBERSTEIN M. ET AL: "ADJUSTMENT OF DIELECTRIC PROPERTIES OF GLASS CERAMIC COMPOSITES VIA CRYSTALLIZATION", GLASS SCIENCE AND TECHNOLOGY, DEUTSCHE GLASTECHNISCHE GESELLSCHAFT, OFFENBACH, DE, vol. 73, no. C01, 1 January 2000 (2000-01-01), pages 370 - 373, XP008047391, ISSN: 0946-7475
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0218285 A1 20020307; CA 2422651 A1 20030227; CA 2422651 C 20070619; CN 1307117 C 20070328; CN 1556775 A 20041222; CZ 2003911 A3 20041215; DE 10043194 A1 20020328; EP 1315679 A1 20030604; HU P0300881 A2 20040728; JP 2004507429 A 20040311; KR 100532799 B1 20051202; KR 20030040431 A 20030522; MX PA03001713 A 20040910; NO 20030882 D0 20030225; NO 20030882 L 20030425; TW I224082 B 20041121; US 2004014584 A1 20040122
DOCDB simple family (application)
DE 0103337 W 20010831; CA 2422651 A 20010831; CN 01818264 A 20010831; CZ 2003911 A 20010831; DE 10043194 A 20000901; EP 01967053 A 20010831; HU P0300881 A 20010831; JP 2002523409 A 20010831; KR 20037003047 A 20030228; MX PA03001713 A 20010831; NO 20030882 A 20030225; TW 90121436 A 20010830; US 36294203 A 20030805