Patent US4009233A successfully refreshed from Google Patents.
US4009233A
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Method for producing alloy particles
Assignee: Crucible Materials Corp
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Filing: 1976-04-27
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Granted: 1977-02-22
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Expires: 1996-04-27
Abstract
Abstract A method for producing metal and alloy particles from an article thereof wherein the article is first diffused with a source of gas, such as hydrogen, and then subjected to localized heating to melting temperature. Upon localized melting the diffused gas within the article is liberated to produce an atomizing effect upon the melted material. This atomized material is then cooled sufficiently rapidly to form discrete particles which are then collected for further use, such as in powder metallurgy applications.
Inventors
- 👤 Thomas S. Cloran
- 👤 Vernon R. Thompson
- 👤 Russell C. Buehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:29
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/02; B22; B22F; B22F9/00; B22F9/02; B22F9/023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
A method of producing particles from reactive metal and reactive metal alloy article, comprising: a. hydriding at least a surface portion of a reactive metal article under conditions to form a metal hydride therein, said hydrided portion of said article having a hydrogen content of at least 0.05%,
Claim 2
Independent Claim
48 words
A method of producing particles from reactive metal and reactive metal alloy article, comprising: a. hydriding at least a surface portion of a reactive metal article under conditions to form a metal hydride therein, said hydrided portion of said article having a hydrogen content of at least 0.05%,
Claim 3
Dependent Claim
74 words
b. heating said article in an inert atmosphere to a temperature and rate of heating in a localized area thereof to locally melt said hydrided portion of said article and to liberate hydrogen gas from said hydride therein, said gas liberation causing immediate atomization of said melt into droplets thereof, c. cooling said droplets at a rate sufficient to form discrete particles thereof while protected from oxidation and contamination, and d. collecting said particles.
Claim 4
Dependent Claim
74 words
b. heating said article in an inert atmosphere to a temperature and rate of heating in a localized area thereof to locally melt said hydrided portion of said article and to liberate hydrogen gas from said hydride therein, said gas liberation causing immediate atomization of said melt into droplets thereof, c. cooling said droplets at a rate sufficient to form discrete particles thereof while protected from oxidation and contamination, and d. collecting said particles.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein said reactive metal is selected from the group consisting of titanium and titanium-base alloy.
Claim 6
Dependent Claim
17 words
The method of claim 1 wherein said heating is step b) is performed by an electron beam.
References Cited (Backward Citations)
US3021562A
Cited
US3275787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |