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PRODUCTION METHOD OF STEATITE CERAMICS WITH IMPROVED ELECTRICAL PROPERTIES
PRODUCTION METHOD OF STEATITE CERAMICS WITH IMPROVED ELECTRICAL PROPERTIES
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机译:电气性能得到改善的硬质陶瓷的生产方法
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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.
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机译:发明内容本发明的目的是生产用于电气技术的具有受控电性能的碱性滑石陶瓷的方法。本发明的碱性滑石陶瓷属于C 220型硅酸镁的组。滑石陶瓷是在升高的温度下具有相对较低的电导率的电绝缘体。为了生产碱性滑石陶瓷,使用了滑石,高岭土,粘土,膨润土和白云石。该混合物可包含至多1.5重量%的氧化铁。研磨混合物并形成产品后,将坯料在1280至1340°C的温度下烧制1小时至10小时。不含膨润土而未添加高岭土的碱性滑石陶瓷在400°C下的比电阻为1.4 x 106 Ohm m。膨润土的总含量被高岭土代替的陶瓷在400°C时的比电阻大于1 x 108欧姆·米。
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