发明名称 |
STEATITE CERAMICS WITH IMPROVED ELECTRICAL PROPERTIES AND A METHOD FOR THE PRODUCTION THEREOF |
摘要 |
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. |
申请公布号 |
WO2016093771(A1) |
申请公布日期 |
2016.06.16 |
申请号 |
WO2014SI00074 |
申请日期 |
2014.12.10 |
申请人 |
INŠTITUT "JOŽEF STEFAN";RAZVOJNI CENTER ENEM NOVI MATERIALI, D.O.O. |
发明人 |
RAMSAK, IRENA;RAZPOTNIK, MARIJA;MAKOVSEK, KATJA;KUSČER HROVATIN, DANJELA;DRNOVSEK, SILVO;HOLC, JANEZ |
分类号 |
C04B35/20;C04B35/626;C04B35/63;C04B35/632;C04B35/634;C04B35/64 |
主分类号 |
C04B35/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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