Metallic interconnection material for solid oxide fuel cell and method for preparing the same
US6150048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are a metallic interconnection material for solid oxide fuel cells and a preparation method thereof. The metallic interconnection material has two fine microstructural phases in which 5-25% by volume of LaCrO.sub.3 is dispersed at the grain boundaries of Cr particles. It can be prepared by mixing 75-95% by volume of a Cr powder and 5-25% by volume of an LaCrO.sub.3 powder, together with a solvent and a binder, in a mill, molding the mixture into a predetermined shape after drying, and sintering the molded shape at approximately 1,500.degree. C. for 10 hours in an Ar atmosphere with 5 vol % of hydrogen to give an LaCrO.sub.3 -dispersed Cr alloy. The LaCrO.sub.3 -dispersed Cr alloy shows high electric conductivity by virtue of the growth inhibition of Cr particles during sintering and high chemical stability by virtue of the presence of the rare earth metal, La, meeting meet the requirements for the interconnection materials for solid oxide fuel cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.