Steatite ceramics with improved electrical properties and a method for the production thereof | Center za prenos tehnologij in inovacij na Institutu "Jožef Stefan"

Steatite ceramics with improved electrical properties and a method for the production thereof

Publication Number: WO2016093771A1
Application Date: 10. 12. 2014
Assignee/Applicant: Jožef Stefan Institute [SI], RAZVOJNI CENTER ENEM NOVI MATERIALI D.O.O. [SI]
Inventor: Irena Ramšak, Marija Razpotnik, Katja Makovšek, Danjela Kuščer Hrovatin, Silvo Drnovšek, Janez Holc
Title: Steatite ceramics with improved electrical properties and a method for the production thereof
Description: The object of the invention is a process for producing alkaline steatite ceramics having controlled electrical properties for electrotechnology. Alkaline steatite ceramics of the invention belongs to a group of magnesium silicates of C 220 type. Steatite ceramics is an electrical insulator with a relatively low electrical conductivity at increased temperature. To produce the alkaline steatite ceramics the materials talc, kaolin, clays, bentonite and dolomite were used. The mixture can contain up to 1.5 % by weight of iron oxides. After the mixture is ground and the products are formed, the blanks are fired at a temperature in the range from 1280 to 1340 °C for 1 hour to 10 hours. Alkaline steatite ceramics with bentonite without added kaolin has specific electrical resistance at 400 °C 1.4 x 106 Ohm m. The ceramics, in which the total content of bentonite is replaced by kaolin, has specific electrical resistance at 400 °C more than 1 x 108 Ohm m.
Drawings: /
Category: Nanotechnology and new materials
Technology application codes: Electronics, IT, telecoms, Industrial technologies (Industry, Materials, Transport)
Market application codes: Communications, Other electronics related, Energy
www: https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160616&DB=&locale=en_EP&CC=WO&NR=2016093771A1&KC=A1&ND=4
Patent offices: EPO