US4559246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing the wettability of a surface by a molten metal
Assignee: Rolls Royce PLC
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Filing: 1985-02-20
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Granted: 1985-12-17
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Expires: 2005-02-20
Abstract
Abstract A method of treating filaments in order to increase their wettability by molten magnesium or an alloy thereof. The filaments are treated by coating them with particulate molybdenum trioxide, chromic oxide, ferric oxide or nickel oxide and subsequently infiltrating them with molten magnesium or an alloy thereof.
Inventors
- 👤 William R. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
C; C23; C23C; C23C28/00; C22; C22C; C22C47/00; C22C47/02; C22C47/04; C23C26/00; C23C26/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
64 words
A method of treating a surface so as to increase its wettability comprising the steps of: coating said surface with an oxide selected from the group consisting of molybdenum trioxide, chromic oxide, ferric oxide and nickel oxide; and subsequently bringing said coated surface into intimate contact with molten magnesium or an alloy thereof under conditions inhibiting oxidation of said molten magnesium or alloy thereof.
Claim 2
Independent Claim
64 words
A method of treating a surface so as to increase its wettability comprising the steps of: coating said surface with an oxide selected from the group consisting of molybdenum trioxide, chromic oxide, ferric oxide and nickel oxide; and subsequently bringing said coated surface into intimate contact with molten magnesium or an alloy thereof under conditions inhibiting oxidation of said molten magnesium or alloy thereof.
Claim 3
Dependent Claim
21 words
A method of treating a surface as claimed in claim 1 including the step of utilizing filaments to provide said surface.
Claim 4
Dependent Claim
28 words
A method of treating a surface as claimed in claim 2 including infiltrating filaments with said molten magnesium or alloy thereof subsequent to oxide coating of said filaments.
Claim 5
Dependent Claim
20 words
A method of treating a surface as claimed in claim 2 including the step of utilizing tows for said filaments.
Claim 6
Dependent Claim
24 words
A method of treating a surface as claimed in claim 2 including the step of weaving said filaments into a form of a cloth.
Claim 7
Dependent Claim
20 words
A method of treating a surface as claimed in claim 2 including the step of forming said filaments from alumina.
Claim 8
Dependent Claim
20 words
A method of treating a surface as claimed in claim 2 including the step of forming filaments from silicon carbide.
Claim 9
Dependent Claim
25 words
A method of treating a surface as claimed in claim 1 including the step of applying said oxide coating to said surface in particulate form.
Claim 10
Dependent Claim
33 words
A method of treating a surface as claimed in claim 8 including the step of applying said oxide in particulate form to said surface dispersed in a liquid vehicle, and subsequently evaporated off.
Claim 11
Dependent Claim
51 words
A method of treating a surface as claimed in claim 8 including the step of applying said oxide in particulate form to said surface dispersed in a resin binder and subsequently burning off said resin binder prior to bringing said molten magnesium or alloy thereof into intimate contact with said surface.
Claim 12
Dependent Claim
42 words
A method of treating a surface as claimed in claim 1 including the step of producing said oxide coating by oxidation of a compound selected from the group consisting of the compounds of molybdenum, chromium, iron and nickel coated on said surface.
Claim 13
Dependent Claim
31 words
A method of treating a surface as claimed in claim 1 including the step of providing an inert atmosphere as the condition for inhibiting the oxidation of said magnesium or alloy.
Claim 14
Dependent Claim
29 words
A method of treating a surface as claimed in claim 1 including the step of immersing said surface in said molten magnesium or alloy to provide the intimate contact.
References Cited (Backward Citations)
US3287158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |