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    • 4. 发明授权
    • Passivating coating for metal oxide varistors
    • 金属氧化物变阻器的钝化涂层
    • US5307046A
    • 1994-04-26
    • US972802
    • 1992-11-06
    • Mohammad A. Alim
    • Mohammad A. Alim
    • C04B14/10C04B28/34H01C7/102H01C7/10H01C7/13
    • C04B14/106C04B28/346H01C7/102C04B2111/00112C04B2111/00155
    • It is disclosed that the properties of a ceramic mullite-kaolinite based passivating coating composition applied as a collar to metal oxide varistor valve block cylindrical surfaces are improved by including in the coating composition from 0.03 to 15% by weight of the coating composition one or more of the following additive compounds: TiO.sub.2 ; Y.sub.2 O.sub.3 ; ZrO.sub.2 ; ZnO; Boroflux (2ZNO.sup.. 3B.sub.2 O.sub.3.sup.. 7H.sub.2 O; or 3ZnO.sup.. 2B.sub.2 O.sub.3.sup.. 5H.sub.2 O); or Si.sub.3 N.sub.4. The coating composition comprises by dry weight a mixture of 55-85% mullite and 15-45% kaolinite, one or a mixture of the above additive compounds, and sufficient water to form a sprayable slurry. The inclusion of the additive compound results in enhanced contact adhesion between the collar and the metal oxide varistor peripheral surface.
    • 公开了通过将涂料组合物中含有0.03至15重量%的涂料组合物的一种或多种包括在涂料组合物中,将金属氧化物变阻器阀座圆柱形表面作为套环施加的陶瓷莫来石 - 高岭石基钝化涂料组合物的性能得到改善 的以下添加剂化合物:TiO2; Y2O3; ZrO2; ZnO; Boroflux(2ZNO.3B2O3.7H2O;或3ZnO.2B2O3.5H2O); 或Si 3 N 4。 涂料组合物通过干重包含55-85%莫来石和15-45%高岭石,一种或上述添加剂化合物的混合物和足够的水以形成可喷雾浆料的混合物。 包含添加剂化合物导致套环和金属氧化物变阻器外围表面之间的接触粘附性增强。