Tungsten paste for co-sintering with pure alumina and method for producing same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 1989
Grant Date -
N/A
app pub date -
Nov 26, 1986
filing date -
Nov 26, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tungsten paste suitable for co-sintering with 98+% alumina substrate can be produced by adding selected compositions of glass to the paste. Circuit packages produced in accordance with the present invention exhibit superior thermal conductivity, low shrinkage variability, and smoother and more homogeneous surface finish. A preferred embodiment of the invention utilizes a substrate comprising narrow size range alumina powder, thus yielding lower sintering temperature and further improvements in shrinkage variability and surface finish.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully