| 发明名称 |
METHOD FOR THE DENSIFICATION OF CERAMIC LAYERS, ESPECIALLY CERAMIC LAYERS WITHIN SOLID OXIDE CELL (SOC) TECHNOLOGY, AND PRODUCTS OBTAINED BY THE METHOD |
| 摘要 |
A ceramic layer, especially for use in solid oxide cell (SOC) technology, is densified in a method comprising (a) providing a multilayer system by depositing the porous ceramic layer, which is to be densified, onto the selected system of ceramic layers on a support, (b) pre-sintering the resulting multilayer system at a temperature T1 to consolidate a sintered, but porous layer, (c) impregnating a solution or suspension of one or more sintering aids directly into the layer to be densified, (d) evaporating the solution or suspension of step (c) to obtain a homogeneous dispersion of the sintering aid(s) in the porous layer surface and (e) performing a thermal treatment at a temperature T2, where T2>T1, to obtain densification of and grain growth in the porous layer formed in step (b). The method makes it possible to obtain dense ceramic layers at temperatures, which are compatible with the other materials present in a ceramic multilayer system. |
| 申请公布号 |
US2014193743(A1) |
申请公布日期 |
2014.07.10 |
| 申请号 |
US201214233721 |
申请日期 |
2012.07.20 |
| 申请人 |
Esposito Vincenzo |
发明人 |
Esposito Vincenzo |
| 分类号 |
C04B41/45;H01L41/187;C04B41/00;H01M8/02;C25B9/06 |
主分类号 |
C04B41/45 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. A method for the densification of porous ceramic layers by an in-situ solid state reaction, said method comprising:
(a) providing a multilayer system by depositing the porous ceramic layer, which is to be densified, onto the selected system of ceramic layers on a support, (b) pre-sintering the resulting multilayer system by applying a temperature T1 to said multilayer system thereby consolidating and pre-sintering, said porous ceramic layer, (c) impregnating a solution or suspension of one or more sintering aids directly into said porous ceramic layer to be densified, (d) evaporating the solution or suspension of step (c) to obtain a homogeneous dispersion of the sintering aid(s) in said porous ceramic layer and (e) performing a thermal treatment by applying a temperature T2 to said multilayer system, where T2>T1, thereby obtaining densification of and grain growth in said porous layer formed in step (b) and thus providing a densified porous ceramic layer having a structure where a grain size (g) and thickness (t) of the densified porous ceramic layer stand in relation to one another as given by
g/t>0.1. |
| 地址 |
Malmo SE |
