Composition and Preparation of Water Suspensions for Producing of Multilayered Varistors
| Publication Number: | SI21367A |
| Application Date: | 27. 12. 2002 |
| Assignee/Applicant: | Jožef Stefan Institute [SI] |
| Inventor: | Jena Cilenšek, Andrej Degen, Silvo Drnovšek, Marija Kosec, Srečko Maček, Urška Muhič |
| Title: | Sestava in priprava vodnih suspenzij za izdelavo večplastnih varistorjev [SL], Composition and Preparation of Water Suspensions for Producing of Multilayered Varistors [EN] |
| Description: | The subject of invention is the composition and procedure of preparation of a stable water suspension – mixture of metal oxides – for the manufacture of multilayer ZnO varistors according to the slip casting method. The procedure of preparation of a stable suspension – mixture of powdered oxides ZnO, Bi2O3, Mn3O4, Co3O4 and TiO2 – is indicated by dispersing 1 up to 80 weight % of solid substance with the average particle size of 1,0 to 5,0 micrometers in water containing 0,08 to 0,3 weight % of dispersant, by adding at the same time to the suspension after dispersing 5 to 15 weight % of binder and plasticizer in relative proportions of 100:0, 75:25, 50:50, 25:75 and 0:100, and by casting the suspension of oxide powders after dispersing and addition of binder and plasticizer on a movable surface at the distance between the slip casting blade and the movable substrate of 100 up to 260 micrometers. The slip-cast and dried ceramic layer is then used for the manufacture of multilayer ZnO varistors. |
| Drawings: | / |
| Category: | Nanotechnology and New Materials |
| Technology application codes: | Electronics, IT and telecoms, Industrial manufacturing, material and transport |
| Market application codes: | Other electronics related |
| www: | https://worldwide.espacenet.com/patent/search/family/032653820/publication/SI21367A?q=si21367 |
| Patent offices: | UIL RS |