Mixed metal dodecaborides and uses thereof

Patent metadata

Field	Value
Publication number	US-12590011-B2
Application number	US-202117478647-A
Country	US
Kind code	B2
Filing date	Sep 17, 2021
Priority date	Sep 5, 2017
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

Disclosed herein, in certain embodiments, are compounds, methods, tools, and abrasive materials comprising mixed transition metal dodecaborides.

First claim

What is claimed is:

1 . A method of preparing a composite matrix, wherein the composite matrix comprises:
Zr 1-x M x B 12 , or Y 1-x Sc x B 12 ; wherein:
Zr is zirconium, Y is yttrium, Sc is scandium, and B is boron;
M is yttrium (Y), scandium (Sc), gadolinium (Gd), samarium (Sm), neodymium (Nd), or praseodymium (Pr); and
x is from 0.001 to 0.999;
wherein the method comprises:
a) blending together the boron and metals for a time sufficient to produce a powder mixture;
b) pressing the powder mixture under a pressure sufficient to generate a pellet; and
c) heating the pellet at a temperature sufficient to produce the composite matrix.

2 . The method of claim 1 , wherein the blending time is about 5 minutes or more.

3 . The method of claim 1 , wherein the blending time is about 5 minutes to about 6 hours.

4 . The method of claim 1 , wherein the powder is compressed under a 1-20 ton load.

5 . The method of claim 1 , wherein the powder is compressed under a 8-12 ton load.

6 . The method of claim 1 , wherein the temperature during heating is from 1000° C. to 2000° C.

7 . The method of claim 1 , wherein heating is carried out using by electrical current.

8 . The method of claim 1 , wherein heating is carried out by arc-melting with a current (I) of 50 Amps (A) or more.

9 . The method of claim 1 , wherein arc melting is performed for 0.01-10 mins.

10 . The method of claim 1 , wherein the heating of the pellet sinters the boron and metals to produce the composite matrix.

11 . The method of claim 1 , wherein heating is carried out at an elevated pressure.

12 . The method of claim 1 , wherein heating is carried out using a hot press.

13 . The method of claim 1 , wherein the hot press heating is performed at a temperature from 1000° C. to 2000° C. and a pressure of up to 36,000 psi.

14 . The method of claim 1 , wherein the composite matrix is Zr 1-x Y x B 12 .

15 . The method of claim 1 , wherein the composite matrix is Zr 1-x Sc x B 12 .

16 . The method of claim 1 , wherein the composite matrix is Y 1-x Sc x B 12 .

17 . The method of claim 1 , wherein the composite matrix is Zr 1-x Gd x B 12 .

18 . The method of claim 1 , wherein the composite matrix is Zr 1-x Sm x B 12 .

19 . The method of claim 1 , wherein the composite matrix is Zr 1-x Nd x B 12 .

20 . The method of claim 1 , wherein the composite matrix is Zr 1-x Pr x B 12 .

Assignees

• Univ California

Inventors

• Kaner Richard Barry
• Akopov Georgiy
• Yeung Michael Tyrone
• Turner Christopher Lawrence
• Sobell Zachary C
• Lin Cheng-Wei

Classifications

• C01F17/30

  Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 (C01F17/247 - C01F17/294 take precedence) · CPC title

• C01B35/04 Primary

  Metal borides · CPC title

• C01P2002/88

  by thermal analysis data, e.g. TGA, DTA, DSC · CPC title

• C01P2002/52

  containing elements as dopants · CPC title

• C01P2004/03

  obtained by SEM · CPC title