Compositional variations of tungsten tetraboride with transition metals and light elements

Patent metadata

Field	Value
Publication number	US-10125412-B2
Application number	US-201214112903-A
Country	US
Kind code	B2
Filing date	Apr 23, 2012
Priority date	Apr 22, 2011
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A composition includes tungsten (W); at least one element selected form the group of elements consisting of boron (B), beryllium (Be) and silicon (Si); and at least one element selected from the group of elements consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), ruthenium (Ru), hafnium (Hf), tantalum (Ta), rhenium (Re), osmium (Os), iridium (Ir), lithium (Li) and aluminum (Al). The composition satisfies the formula W 1-x M x X y wherein X is one of B, Be and Si; M is at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Hf, Ta, Re, Os, Ir, Li and Al; x is at least 0.001 and less than 0.999; and y is at least 4.0. A tool is made from or coated with this composition.

First claim

We claim:

1. A composition, comprising:
tungsten (W);
at least one element selected from the group of elements consisting of boron (B), beryllium (Be) and silicon (Si); and
at least one element selected from the group of elements consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), ruthenium (Ru), hafnium (Hf), tantalum (Ta), osmium (Os), iridium (Ir), lithium (Li) and aluminum (Al),
wherein said composition satisfies the formula
W 1-x M x X y

wherein X is B,
wherein M is at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Hf, Ta, Os, Ir, Li and Al,
wherein x is at least 0.001 and less than 0.999,
wherein y is about 4.0, and
wherein the composition is a crystalline solid characterized by at least one X-ray diffraction pattern reflection at 2 theta=24.2±0.2.

2. A composition according to claim 1 , wherein M is one of Ta, Mn, Cr, Ta and Mn, or Ta and Cr.

3. A composition according to claim 1 , wherein x is at least 0.001 and less than 0.6.

4. A composition according to claim 1 , wherein M is Ta, and x is at least 0.001 and less than 0.05.

5. A composition according to claim 4 , wherein x is about 0.02.

6. A composition according to claim 1 , wherein M is Mn, and x is at least 0.001 and less than 0.4.

7. A composition according to claim 1 , wherein M is Cr, and x is at least 0.001 and less than 0.6.

8. A composition according to claim 1 , wherein M is Ta and Cr.

9. A composition according to claim 1 , wherein M is Ta and Cr, and x is from 0.02 to 0.1.

10. A composition according to claim 1 , wherein the crystalline solid is further characterized by at least one X-ray diffraction pattern reflection at 2 theta=34.5±0.2 or 45.1±0.2.

11. A composition according to claim 1 , wherein the crystalline solid is further characterized by at least one X-ray diffraction pattern reflection at 2 theta=28.1±0.2, 42.5±0.2, or 55.9±0.2.

12. A composition according to claim 1 , wherein the crystalline solid is further characterized by at least one X-ray diffraction pattern reflection at 2 theta=47.5±0.2, 61.8±0.2, 69.2±0.2, 69.4±0.2, 79.7±0.2, 89.9±0.2, or 110.2±0.2.

13. A composition according to claim 1 , wherein the crystalline solid is further characterized by at least two X-ray diffraction pattern reflections at 2 theta=28.1±0.2, 34.5±0.2, 42.5±0.2, 45.1±0.2, 47.5±0.2, 55.9±0.2, 61.8±0.2, 69.2±0.2, 69.4±0.2, 79.7±0.2, 89.9±0.2, or 110.2±0.2.

14. A composition according to claim 1 , wherein the crystalline solid is further characterized by at least five X-ray diffraction pattern reflections at 2 theta=28.1±0.2, 34.5±0.2, 42.5±0.2, 45.1±0.2, 47.5±0.2, 55.9±0.2, 61.8±0.2, 69.2±0.2, 69.4±0.2, 79.7±0.2, 89.9±0.2, or 110.2±0.2.

Assignees

• Kaner Richard B
• Tolbert Sarah H
• Mohammadi Reza
• Lech Andrew T
• Xie Miao
• Univ California

Inventors

• Kaner Richard B
• Tolbert Sarah H
• Mohammadi Reza
• Lech Andrew T
• Xie Miao

Classifications

• B22F2005/001

  Cutting tools, earth boring or grinding tool other than table ware · CPC title

• C23C30/00

  Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process (C23C26/00, C23C28/00 take precedence) · CPC title

• C22C1/045

  Alloys based on refractory metals · CPC title

• C22C1/02

  by melting {(C22C1/1036 takes precedence)} · CPC title

• C22C29/14

  based on borides · CPC title