LIU Xi, YU Haichao, LIU Zhiyuan, et al. Study on preparation technology of porous protective coating slurry for oxygen sensor[J]. 2020, (6): 15-17. DOI: 10.13873/J.1000-9787(2020)06-0015-03.
氧传感器多孔保护层浆料制备工艺研究
摘要
多孔保护层是覆盖在氧传感器铂电极表面的多孔陶瓷层
用于过滤测试环境废气中的有害成分
起到防止铂电极中毒、延长氧传感器寿命的作用。以镁铝尖晶石(MgAl
2
O
4
)作为多孔陶瓷骨料
采用无介质混料法制备多孔保护层浆料
研究粘结剂含量、分散剂种类及含量对浆料的流变性能影响以及烧成后多孔保护层对氧传感器敏感特性影响
制备易于印刷、性能良好的多孔保护层浆料。
Abstract
The porous protective layer is a porous ceramic layer covering the platinum electrode surface of oxygen sensor
which is used to filter the harmful components in the exhaust gas of the test environment
and plays the role of preventing the platinum electrode from poisoning and prolonging the life of the oxygen sensor. MgAl
2
O
4
is used as porous ceramic aggregate to prepare porous protective layer slurry. The influence of binder content
dispersant type and content on the rheological properties of slurry and the influence of porous protective layer on the sensitivity of oxygen sensor after firing are studied. The porous protective layer slurry with easy printing and good performance is prepared.