Metallizing paste and a process for metallizing ceramic articles by using such a metallizing paste
US4822645A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Oct 7, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/092
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Metallizing pastes are disclosed, which contain, as inorganic materials, 15 to 50% by weight of a component to form a glass phase and 50 to 85% by weight of a metallic molybdenum powder. The glass phase essentially consists of 5 to 25% by weight of Al.sub.2 O.sub.3, 35 to 55% by weight of SiO.sub.2 and 30 to 55% by weight of MnO. A process for metallizing ceramic members is also disclosed. The metallizing paste is applied to surfaces of the ceramic member and the dried. The ceramic member with the dried metallizing paste is then fired in a temperature range from 1,200.degree. to 1,400.degree. C. for 0.5 to 10 hours in a mixed gas of hydrogen gas and nitrogen gas in which a ratio in partial pressure between steam and hydrogen, (P.sub.H.sbsb.2.sub.O /P.sub.H.sbsb.2), is adjusted in a range from 10.sup.-6 to 10.sup.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.