US4948029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding two bodies
Assignee: US Philips Corp
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Filing: 1989-06-19
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Granted: 1990-08-14
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Expires: 2009-06-19
Abstract
Abstract Two bodies are provided with mutually different metal layers. The combination of wringing in contact of the metal surfaces and low-temperature interdiffusion provides a strong bond between the two bodies.
Inventors
- 👤 Jan Haisma
- 👤 Andries R. Miedema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
C; C22; C22C; C22C45/00; C03; C03C; C03C15/00; C03C19/00; C03C27/00; C03C27/06; C03C27/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A method of bonding together two bodies, said method comprising: (a) applying a thin metallic layer of two different metals on opposing surfaces of said bodies, each metallic layer being formed of a different metal, the atomic volume ratio of said metals being approximately 1.9 or more, and said two metals being capable of forming an amorphous alloy, (b) slightly polishing said thin metallic layer to activate the surfaces of said thin metallic layer, (c) wringing in contact with the resultant actuated surfaces of said thin metallic layers and holding said thin metallic layers, while in contact with each other, to a temperature sufficient to cause the metals containing metallic layers to form an amorphous alloy.
Claim 2
Independent Claim
116 words
A method of bonding together two bodies, said method comprising: (a) applying a thin metallic layer of two different metals on opposing surfaces of said bodies, each metallic layer being formed of a different metal, the atomic volume ratio of said metals being approximately 1.9 or more, and said two metals being capable of forming an amorphous alloy, (b) slightly polishing said thin metallic layer to activate the surfaces of said thin metallic layer, (c) wringing in contact with the resultant actuated surfaces of said thin metallic layers and holding said thin metallic layers, while in contact with each other, to a temperature sufficient to cause the metals containing metallic layers to form an amorphous alloy.
Claim 3
Dependent Claim
57 words
A method as claimed in claim 1, characterized in that one metal is chosen from the group consisting of group IV B (Ti, Zr and Hf) and the other metal is selected from the group consisting of the transition metals from the group V B, VI B, VII B, VIII and I B of the Periodic System.
Claim 4
Dependent Claim
24 words
A method as claimed in claim 1, characterized in that one metal is a rare-earth metal and the other metal is a transition metal.
Claim 5
Dependent Claim
21 words
A method as claimed in claim 1, characterized in that metal layers having a thickness of approximately 50 nm are applied.
Claim 6
Dependent Claim
24 words
A method as claimed in claim 1, characterized in that the temperature treatment is effected at a temperature of not more than 480° C.
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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) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |