Title: Ternary boride product and process

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Claims: I claim:

1. 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.

2. The hot pressed product of claim 1, where x is between about 1.5 and about 2.2.

3. The hot pressed product of claim 1, where x is about 2.

4. 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.

5. The hot pressed product of claim 4, where x is between about 1.5 and about 2.2.

6. 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.

7. A method of making a hard, tough, shaped body comprising hot pressing at a temperature at least about 2000.degree.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.

8. 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.

9. 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.degree.F., to produce a ceramic body containing substantial quantities of acicular zirconium titanium monoboride.
Other info:

Inventors: Clougherty, Edward V. (West Roxbury, MA, US)

Application Number: 401291
Filing Date: 1973-09-27
Publication_date: 1976-02-10
Assignee: Manlabs, Incorporated (Cambridge, MA)
Primary Class(es): 75/233 75/243, 75/244, 264/125, 419/12
Other Classes:
US Patent Ref:

2776468	Jan, 1957	Steinitz	75/202.
2799912	Jul, 1957	Greger	75/202.
3147543	Sep, 1964	Doerner et al.	75/202.
3802850	Apr, 1975	Clougherty	75/202.

Other Refs:
Primary Examiner: Padgett, Benjamin R.
Assistant Examiner: Schafer, R. E.
Attorney: Steinhilper; Frank A., Rosen; Alfred H.