Process for the metallization of ceramics and apparatus for carrying out the process

US5160765A · kind A · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Frederic Rotman · Tokyo, JP
• Yannick Rancon · Auxerre, FR
• Philippe Queille · Paris, FR
• Michel Olivier · Beynes, FR

Key dates

• Filing date: Feb 22, 1990
• Grant date: Nov 3, 1992
• Expiry date: Feb 22, 2010

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K1/092
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Metallization of ceramics of the type comprising depositing a metallic paste based on molybdenum and/or tungsten and manganese on a ceramic substrate and effecting the sintering of the paste in an atmosphere having a predetermiend oxido-reduction potential, with a rise in and a maintenance of a temperature between 1300.degree. C. and 1600.degree. C., then cooling to ambient temperature, with production of an atmosphere by the addition to a pure neutral gas of a quantity of additional oxygen and a quantity of hydrogen at least sufficient to subsequently obtain by catalytic reaction the desired content of water vapour and contingently the excess content of hydrogen.