US5028306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming a ceramic-metal adduct
Assignee: Motorola Solutions Inc
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Filing: 1990-09-04
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Granted: 1991-07-02
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Expires: 2010-09-04
Abstract
Abstract A ceramic article is treated to increase the adhesion of metals to the ceramic article by placing the ceramic article under at least a partial vacuum. A thin film of metal is then deposited on the ceramic article by sputtering or evaporating. The metallized ceramic article is further bombarded by high energy ions, resulting in the formation of a metal-ceramic compound that renders the article more receptive to further metal deposition.
Inventors
- 👤 James L. Davis
- 👤 Ernest G. Garza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:10
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/0027; C04B41/45; C04B41/50; C04B41/51; C04B41/5127; C04B41/53; C04B41/5315; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B41/91; C23; C23C; C23C14/00; C23C14/02; C23C14/021; C23C14/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
A process for treating a ceramic article to increase the adhesion of metal to the ceramic article comprising the following steps in the order named: placing the ceramic article under at least a partial vacuum, depositing a thin film of metal on the ceramic article, exposing the metallized ceramic article to high energy ions so as to react the metal film with the ceramic article.
Claim 2
Dependent Claim
65 words
A process for treating a ceramic article to increase the adhesion of metal to the ceramic article comprising the following steps in the order named: placing the ceramic article under at least a partial vacuum, depositing a thin film of metal on the ceramic article, exposing the metallized ceramic article to high energy ions so as to react the metal film with the ceramic article.
Claim 3
Dependent Claim
25 words
The process of claim 1, wherein the ceramic article is selected from the group consisting of aluminum oxide, titanium nitride, barium titanate, and aluminum nitride.
Claim 4
Dependent Claim
21 words
The process of claim 2, wherein the metal is selected from the group consisting of copper, nickel, silver, gold, and palladium.
Claim 5
Dependent Claim
20 words
The process of claim 3, wherein the high energy ion is selected from the group consisting of the Noble gases.
Claim 6
Dependent Claim
21 words
The process of claim 1, wherein the metal is selected from the group consisting of copper, nickel, silver, gold, and palladium.
Claim 7
Dependent Claim
20 words
The process of claim 1, wherein the high energy ion is selected from the group consisting of the Noble gases.
Claim 8
Dependent Claim
15 words
The process of claim 1, wherein the depositing step comprises depositing the metal by sputtering.
Claim 9
Dependent Claim
15 words
The process of claim 1, wherein the depositing step comprises depositing the metal by evaporating.
Claim 10
Dependent Claim
20 words
The process of claim 1, including the further step of plasma cleaning the ceramic article prior to depositing the metal.
Claim 11
Dependent Claim
80 words
A process for treating an aluminum oxide ceramic article to increase the adhesion of metal to the article comprising the following steps in the order named: placing the aluminum oxide ceramic article under at least a partial vacuum, sputtering or evaporating a thin film of copper on the aluminum oxide ceramic article, and exposing the metallized aluminum oxide ceramic article to a beam of high energy argon ions so as to react the copper with the aluminum oxide ceramic article.
Claim 12
Dependent Claim
80 words
A process for treating an aluminum oxide ceramic article to increase the adhesion of metal to the article comprising the following steps in the order named: placing the aluminum oxide ceramic article under at least a partial vacuum, sputtering or evaporating a thin film of copper on the aluminum oxide ceramic article, and exposing the metallized aluminum oxide ceramic article to a beam of high energy argon ions so as to react the copper with the aluminum oxide ceramic article.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |