Metal material and a method for use in fabricating thereof

Patent metadata

Field	Value
Publication number	US-10428418-B2
Application number	US-201615349318-A
Country	US
Kind code	B2
Filing date	Nov 11, 2016
Priority date	Nov 11, 2016
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A metal material including a plurality of metal particles arranged in a crystal structure having at least two phases; wherein the at least two phases include a crystalline phase and an amorphous phase, wherein the crystalline phase includes a nanocrystalline phase and the amorphous phase includes a nanoamorphous phase.

First claim

The invention claimed is:

1. A metal material comprising a plurality of metal particles arranged in a structure having at least two phases including a crystalline phase and an amorphous phase; wherein the crystalline phase is arranged to form a plurality of spherical crystalline structures and the amorphous phase is arranged to surround the spherical crystalline structures such that the spherical crystalline structures are substantially free of dislocation.

2. The metal material in accordance with claim 1 , wherein the crystalline phase includes a nanocrystalline phase and the amorphous phase includes a nanoamorphous phase.

3. The metal material in accordance with claim 1 , wherein the plurality of metal particles are further arranged to form a plurality of amorphous shells.

4. The metal material in accordance with claim 3 , wherein at least a portion of the plurality spherical crystalline structure is surrounded by an amorphous shell.

5. The metal material in accordance with claim 3 , wherein each of the plurality of amorphous shells includes a size smaller than or equal to 10 nm.

6. The metal material in accordance with claim 1 , wherein a plurality of spherical crystalline structures includes a size smaller than or equal to 10 nm.

7. The metal material in accordance with claim 1 , wherein a ratio between a portion of metal particles arranged in the crystalline phase and a portion of metal particles arranged in the amorphous phase is substantially ranged at 1:2 to 2:1.

8. The metal material in accordance with claim 7 , wherein the ratio is substantially equal to 1:1.

9. The metal material in accordance with claim 1 , wherein the at least two phases are distributed uniformly in three dimensional directions in the structure.

10. The metal material in accordance with claim 1 , wherein the structure includes a material strength higher than or equal to E/20, wherein E represents an elastic modulus of the metal material.

11. The metal material in accordance with claim 1 , wherein the structure is arranged to sustain a maximum stress of 3.3 GPa.

12. The metal material in accordance with claim 1 , wherein the structure includes a metallic glass structure.

13. The metal material in accordance with claim 1 , wherein the plurality of metal particles include magnesium.

14. The metal material in accordance with claim 13 , wherein the plurality of metal particles further includes at least one of yttrium and copper.

15. The metal material in accordance with claim 14 , wherein the crystalline phase is copper-rich and the amorphous phase is magnesium-rich.

Assignees

• Univ City Hong Kong

Inventors

• Lu Jian
• Wu Ge

Classifications

• C23C14/165

  by cathodic sputtering · CPC title

• C23C14/3414

  Metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy · CPC title

• C23C14/35 Primary

  by application of a magnetic field, e.g. magnetron sputtering {(C23C14/3457 takes precedence)} · CPC title

• C22C30/02

  containing copper · CPC title

• C23C14/185 Primary

  by cathodic sputtering · CPC title