Process for producing a metal-coated, metallized component of aluminum nitride ceramic and metal-coated component obtained thereby
US6077564A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1997 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Nov 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process for producing a metal-coated, metallized component of aluminum nitride ceramic in the steps: PA1 preparation of a metallizing paste comprising a pulverulent glass of the MnO--Al.sub.2 O.sub.3 --SiO.sub.2 system and a refractory metal powder, PA1 application of the metallizing paste to the component surface, PA1 firing the component coated with metallizing paste at a temperature >1100.degree. C. under a reducing moist gas atmosphere of hydrogen-containing nitrogen, PA1 coating the metallized component with metal by means of metal plating, wherein, during the heating up of the ceramic component coated with metallizing paste, the atmosphere is humidified with water vapor so that the water vapor content in the temperature range between 800.degree. C. and 1050.degree. C. corresponds to a dew point of >295 K and the water vapor content outside this temperature range corresponds to a dew point of >295 K. The invention also relates to a metallizing paste comprising a adhesion promotor of glass powder having a mean particle size of 2-15 .mu.m, a refractory metal powder having a mean particle size of 1-4 .mu.m and an organic resin dissolved in a suitable so…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.