US5053195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding amalgam and method of making
Assignee: Microelectronics and Computer Technology Corp
•
Filing: 1989-07-19
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Granted: 1991-10-01
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Expires: 2009-07-19
Abstract
Abstract An amalgam and a method of preparing an amalgam for bonding two articles together, which includes mixing a composition of a liquid metal and a metal powder to thoroughly wet the metal powder with the liquid metal, and thereafter mixing a composition with a pestle element for mechanically amalgamating the composition. Other additives may be provided such as ductile metals, additives containing oxides, ceramics, or other non-metallic compounds, and volatile constituents. The amalgamated composition can then wet surfaces to be bonded and harden at or near room temperature.
Inventors
- 👤 Colin A. MacKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:18
CPC Classifications
C; C22; C22C; C22C28/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3465
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
64 words
A method for preparing an amalgam for bonding two articles together comprising, mixing the composition to thoroughly wet the metal powder with the liquid metal, and thereafter mixing the composition with a pestle element and mechanically amalgamating the composition, wherein the mixing is in an amalgamator at approximately 3600 cpm for approximately 1-20 seconds and thereafter at approximately 3000 cpm for approximately 3-5 seconds.
Claim 2
Independent Claim
64 words
A method for preparing an amalgam for bonding two articles together comprising, mixing the composition to thoroughly wet the metal powder with the liquid metal, and thereafter mixing the composition with a pestle element and mechanically amalgamating the composition, wherein the mixing is in an amalgamator at approximately 3600 cpm for approximately 1-20 seconds and thereafter at approximately 3000 cpm for approximately 3-5 seconds.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the liquid metal is selected from the group consisting of gallium, indium, gallium/tin, gallium/indium, and gallium/indium/tin.
Claim 4
Dependent Claim
23 words
The method of claim 2 wherein the liquid metal further contains a material selected from the group consisting of mercury, cadmium, and bismuth.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the metal powder is selected from the group consisting of antimony, cobalt, copper, chromium, germanium, gold, iron, nickel, magnesium, manganese, platinum, silver, and vanadium.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein the metal powder includes ductile particles selected from the group consisting of aluminum, molybdenum, and tungsten for providing a more ductile amalgam.
Claim 7
Dependent Claim
22 words
The method of claim 1 wherein the composition includes additives selected from the group of ceramics, diamond, graphite, nitrides, phosphides, and sulfides.
Claim 8
Dependent Claim
19 words
The method of claim 1 wherein the liquid metal is gallium and the metal powder includes nickel and copper.
Claim 9
Dependent Claim
19 words
The method of claim 7 wherein the composition includes approximately 65% gallium, 30% copper, and 5% nickel by weight.
Claim 10
Dependent Claim
31 words
The method of claim 1 wherein the liquid metal forms greater than 60% by weight of the composition and the metal powder forms 40% by weight or less of the composition.
Claim 11
Dependent Claim
33 words
The method of claim 1, wherein the composition further includes a volatile constituent, wherein the evaporation of said volatile constituent controls the final proportion of the final reacted intermetallic compound in the amalgam.
Claim 12
Dependent Claim
19 words
The method of claim 10 wherein the volatile constituent is selected from the group consisting of zinc and mercury.
Claim 13
Dependent Claim
13 words
The method of claim 1, wherein the composition includes as an additive oxides.
Claim 14
Dependent Claim
13 words
The method of claim 1, wherein the composition includes as an additive alumina.
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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) | 1994-09-30 | 1995-04-01 | 1995-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-30 | 1999-04-01 | 1999-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-30 | 2003-04-01 | 2003-10-01 | $7700.00 | Window Closed / Lapsed |