US3963485A
Expired / Lapsed
US
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Method of producing sintered titanium base articles
Assignee: Pullman Co LLC
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Filing: 1973-07-05
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Granted: 1976-06-15
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Expires: 1993-07-05
Abstract
Abstract A method of producing a high strength, highly ductile titanium base article is provided which comprises coating pre-alloyed metal particles with an iron containing compound which is capable of being converted to elemental iron particles, converting this iron containing compound to elemental iron particles, mixing the iron particles and pre-alloyed metal particles with titanium base particles, forming this mixture of particles into the desired article, heating the formed article under vacuum conditions to a temperature sufficient to cause the constituent particles of the article to become diffused together, and cooling the article to produce a sintered titanium base article.
Inventors
- 👤 Edward Louis Thellmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:52
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/045; C22C1/0458; B; B22; B22F; B22F1/00; B22F1/17
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
104 words
The method of producing a sintered titanium base article comprising the steps of: coating particles of an aluminum base pre-alloyed metal with an iron containing compound capable of yielding elemental iron particles; converting said iron containing compound to elemental iron particles at least some of which coat said pre-alloyed metal particles; mixing said pre-alloyed metal particles and iron particles with titanium base particles; compacting the resultant mixture into an article having the desired configuration; heating said formed article under vacuum conditions to a temperature sufficient to cause the constituent particle thereof to diffuse together; and cooling said article to produce a solidified, sintered article.
Claim 2
Independent Claim
104 words
The method of producing a sintered titanium base article comprising the steps of: coating particles of an aluminum base pre-alloyed metal with an iron containing compound capable of yielding elemental iron particles; converting said iron containing compound to elemental iron particles at least some of which coat said pre-alloyed metal particles; mixing said pre-alloyed metal particles and iron particles with titanium base particles; compacting the resultant mixture into an article having the desired configuration; heating said formed article under vacuum conditions to a temperature sufficient to cause the constituent particle thereof to diffuse together; and cooling said article to produce a solidified, sintered article.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein said pre-alloyed material is composed of an alloy selected from the group consisting of aluminum-vanadium alloys, aluminum-tin alloys and mixtures thereof.
Claim 4
Dependent Claim
22 words
The method of claim 2 wherein said pre-alloyed material consists of 60 weight per cent aluminum and 40 weight per cent vanadium.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein said iron containing compound is selected from the group consisting of ferrous chloride, ferric chloride and mixtures thereof.
Claim 6
Dependent Claim
13 words
The method of claim 4 wherein said iron containing compound is ferrous chloride.
Claim 7
Dependent Claim
36 words
The method of claim 1 wherein said iron containing compound is converted to elemental iron particles by heating said coated pre-alloyed particles in a reducing atmosphere to a temperature sufficient to cause said reduction to occur.
Claim 8
Dependent Claim
40 words
The method of claim 6 wherein said iron containing compound is converted to iron particles by heating so-coated particles of a pre-alloyed material in a hydrogen atmosphere at a temperature of about 1400°F for a period of about one-half hour.
Claim 9
Dependent Claim
19 words
The method of claim 1 wherein said titanium base particles are composed of essentially pure titanium plus incidental impurities.
Claim 10
Independent Claim
99 words
A method of producing a sintered titanium base article comprising the steps of: coating a plurality of carrier metal particles with an iron containing compound which is capable of being converted to finely divided particles of elemental iron; mixing said coated carrier metal particles with titanium base particles; compacting the resultant mixture into an article having the desired configuration; heating said article under vacuum conditions to a temperature sufficient to convert said iron containing compound to elemental iron particles and cause the constituent materials of said article to diffuse together; and cooling said article to produce a sintered article.
Claim 11
Independent Claim
99 words
A method of producing a sintered titanium base article comprising the steps of: coating a plurality of carrier metal particles with an iron containing compound which is capable of being converted to finely divided particles of elemental iron; mixing said coated carrier metal particles with titanium base particles; compacting the resultant mixture into an article having the desired configuration; heating said article under vacuum conditions to a temperature sufficient to convert said iron containing compound to elemental iron particles and cause the constituent materials of said article to diffuse together; and cooling said article to produce a sintered article.
Claim 12
Dependent Claim
26 words
The method of claim 9 wherein said carrier metal particles are composed of a metal selected from the group consisting of titanium, aluminum and mixtures thereof.
Claim 13
Dependent Claim
28 words
The method of claim 9 wherein said carrier metal particles are composed of an alloy selected from the group consisting of aluminum-vanadium alloys, aluminum-tin alloys and mixtures thereof.
Claim 14
Dependent Claim
24 words
The method of claim 9 wherein said iron containing compound is selected from the group consisting of ferrous chloride, ferric chloride and mixtures thereof.
Claim 15
Dependent Claim
13 words
The method of claim 12 wherein said iron containing compound is ferrous chloride.
Claim 16
Dependent Claim
18 words
The method of claim 9 wherein said titanium base particles consist essentially of pure titanium plus incidental impurities.
Claim 17
Independent Claim
69 words
A method of producing a sintered titanium base article comprising the steps of: coating a plurality of metal particles with an iron containing compound which is capable of being converted to finely divided particles of elemental iron; mixing said coated metal particles with titanium base particles; and forming the resultant mixture into a compacted article having the desired configuration by the application of suitable pressure at a suitable temperature.
Claim 18
Independent Claim
69 words
A method of producing a sintered titanium base article comprising the steps of: coating a plurality of metal particles with an iron containing compound which is capable of being converted to finely divided particles of elemental iron; mixing said coated metal particles with titanium base particles; and forming the resultant mixture into a compacted article having the desired configuration by the application of suitable pressure at a suitable temperature.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |