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 |