US3937619A
Expired / Lapsed
US
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Ternary boride product and process
Assignee: Manlabs Inc
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Filing: 1973-09-27
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Granted: 1976-02-10
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Expires: 1993-09-27
Abstract
Abstract A hard, tough, strong ceramic body is formed by hot pressing a mixture of a powdered metal and a powdered metal diboride. The metal employed is zirconium, titanium or hafnium and the diboride is the diboride of a different member of the same group of zirconium, titanium or hafnium to form a ternary composition. During hot pressing at temperatures above about 2,000°F., a substantial proportion of acicular ternary monoboride is formed.
Inventors
- 👤 Edward V. Clougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:59
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/5805; C04B35/58064; C04B35/58078; C04B35/58071; C04B35/622; C04B35/64; C04B35/645; C04B35/65
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
86 words
A tough, hard, hot pressed shaped body containing boron and at least two of the three elements, titanium, zirconium, hafnium, hot pressed from a mixture of powdered metal and a powdered diboride to form substantial quantities of a ternary monoboride of said elements and having a percentage composition corresponding to the formula (M1, M2).sub.x B.sub.2 where M1 is titanium, zirconium or hafnium and M2 is a different metal of the group of titanium, zirconium and hafnium, and where x is between about 1.25 and about 2.5.
Claim 2
Dependent Claim
86 words
A tough, hard, hot pressed shaped body containing boron and at least two of the three elements, titanium, zirconium, hafnium, hot pressed from a mixture of powdered metal and a powdered diboride to form substantial quantities of a ternary monoboride of said elements and having a percentage composition corresponding to the formula (M1, M2).sub.x B.sub.2 where M1 is titanium, zirconium or hafnium and M2 is a different metal of the group of titanium, zirconium and hafnium, and where x is between about 1.25 and about 2.5.
Claim 3
Dependent Claim
16 words
The hot pressed product of claim 1, where x is between about 1.5 and about 2.2.
Claim 4
Dependent Claim
12 words
The hot pressed product of claim 1, where x is about 2.
Claim 5
Dependent Claim
50 words
A tough, hard, hot pressed shaped body containing boron, titanium and zirconium hot pressed from a mixture of metal and diboride to form substantial quantities of titanium-zirconium monoboride and having a percentage composition corresponding to the formula (Ti, Zr).sub.x B.sub.2 where x is is between about 1.25 and about 2.5.
Claim 6
Dependent Claim
50 words
A tough, hard, hot pressed shaped body containing boron, titanium and zirconium hot pressed from a mixture of metal and diboride to form substantial quantities of titanium-zirconium monoboride and having a percentage composition corresponding to the formula (Ti, Zr).sub.x B.sub.2 where x is is between about 1.25 and about 2.5.
Claim 7
Dependent Claim
16 words
The hot pressed product of claim 4, where x is between about 1.5 and about 2.2.
Claim 8
Dependent Claim
30 words
A tough, hard, hot pressed shaped body having a composition corresponding approximately to a ternary monoboride of titanium and zirconium and having approximately equal atomic proportions of titanium and zirconium.
Claim 9
Dependent Claim
30 words
A tough, hard, hot pressed shaped body having a composition corresponding approximately to a ternary monoboride of titanium and zirconium and having approximately equal atomic proportions of titanium and zirconium.
Claim 10
Independent Claim
80 words
A method of making a hard, tough, shaped body comprising hot pressing at a temperature at least about 2000°F. a uniform mixture of powdered metal and powdered metal diboride where the diboride is selected from the group consisting of titanium diboride, zirconium diboride, hafnium diboride and mixtures thereof and the powdered metal is a different metal selected from titanium, zirconium, hafnium and mixtures thereof, said method forming substantial quantities of a ternary monoboride from said powdered metal and said diboride.
Claim 11
Independent Claim
80 words
A method of making a hard, tough, shaped body comprising hot pressing at a temperature at least about 2000°F. a uniform mixture of powdered metal and powdered metal diboride where the diboride is selected from the group consisting of titanium diboride, zirconium diboride, hafnium diboride and mixtures thereof and the powdered metal is a different metal selected from titanium, zirconium, hafnium and mixtures thereof, said method forming substantial quantities of a ternary monoboride from said powdered metal and said diboride.
Claim 12
Dependent Claim
56 words
A method according to claim 7 wherein the diboride is titanium diboride or zirconium diboride or a mixture thereof and wherein the metal powder is a different metal of the group of titanium and zirconium, whereby the mixture is a ternary mixture containing zirconium, titanium and boron, in approximately the proportions corresponding to a ternary monoboride.
Claim 13
Independent Claim
62 words
A method of making a strong, tough, hard, shaped ceramic body comprising uniformly mixing zirconium diboride powder and about 10% to about 30% by weight of titanium metal powder and hot pressing said mixture at about 3,000 pounds per square inch at a temperature of at least about 2,500°F., to produce a ceramic body containing substantial quantities of acicular zirconium titanium monoboride.
Claim 14
Independent Claim
62 words
A method of making a strong, tough, hard, shaped ceramic body comprising uniformly mixing zirconium diboride powder and about 10% to about 30% by weight of titanium metal powder and hot pressing said mixture at about 3,000 pounds per square inch at a temperature of at least about 2,500°F., to produce a ceramic body containing substantial quantities of acicular zirconium titanium monoboride.
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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |