Claims
- 1. A diffusion barrier material having sufficient thermal and mechanical integrity to protect selected metal areas of a plurality of spaced metal areas on the surface of a substrate during maskless cladding consisting essentially of: polymethylmethacrylate, amylacetate, and a ceramic particle base comprising alumina powder and fumed silica, wherein said material has sufficient thermal and mechanical integrity to protect selected metal areas of a plurality of spaced metal areas on the surface of a substrate during maskless cladding.
- 2. A screenable paste to protect selected metal areas of a plurality of spaced metal areas on an alumina ceramic substrate surface during maskless cladding comprising:
- polymethylmethacrylate, amylacetate and a ceramic particle base comprising alumina powder and fumed silica wherein said paste protects selected metal areas of a plurality of spaced metal areas on an alumina ceramic substrate surface during maskless cladding.
- 3. The barrier material of claim 1 wherein the ceramic particle base comprises a majority component of said material.
- 4. The paste of claim 2 wherein the ceramic particle base comprises a majority component of said paste.
Parent Case Info
This is a divisional of application Ser. No. 666,954 filed Oct. 30, 1984, now U.S. Pat. No. 4,582,722.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0016925 |
Oct 1980 |
DEX |
0089559 |
Sep 1983 |
DEX |
1554958 |
Jan 1969 |
FRX |
Non-Patent Literature Citations (2)
Entry |
Binder Systems for Multilayer Glass-Ceramic Substrate by R. N. Master et al., IBM Technical Disclosure Bulletin, vol. 22, No. 4, Sep. 1979, p. 1542. |
Electroplating of MLC Substrates Using a Nonprecious Metal Shorting Material by R. J. Kowalczyk, IBM Technical Disclosure Bulletin, vol. 22, No. 4, Sep. 1979, pp. 1439-1440. |
Divisions (1)
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Number |
Date |
Country |
Parent |
666954 |
Oct 1984 |
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