Objects made of bulk-solidifying amorphous alloys and method of making same

Patent metadata

Field	Value
Publication number	US-9782242-B2
Application number	US-201414174206-A
Country	US
Kind code	B2
Filing date	Feb 6, 2014
Priority date	Aug 5, 2002
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

Metallic dental prostheses made of bulk-solidifying amorphous alloys wherein the dental prosthesis has an elastic strain limit of around 1.2% or more and methods of making such metallic dental prostheses are provided.

First claim

What is claimed is:

1. A method of manufacturing an object, comprising:
softening a feedstock of a bulk-solidifying amorphous alloy below the melting temperature of the bulk-solidifying amorphous alloy and in an inert environment, the bulk-solidifying amorphous alloy being iron-based or nickel-based, having a glass transition temperature lower than 400° C., and having a hardness of at least 4 GPa;
shaping the softened feedstock to form a near-to-net shape object; and
quenching the object at a cooling rate sufficient to ensure that the bulk solidifying amorphous alloy has a substantially amorphous atomic structure.

2. The method as described in claim 1 , the bulk-solidifying amorphous alloy having a hardness of 7.5 GPa and higher.

3. The method as described in claim 1 , wherein the bulk solidifying amorphous alloy has a critical cooling rate of 100° C./second or less.

4. The method as described in claim 1 , wherein the step of shaping comprises molding the softened feedstock.

5. The method as described in claim 1 , wherein the bulk-solidifying amorphous alloy further comprises a ductile metallic crystalline phase precipitate.

6. The method as described in claim 1 , wherein the bulk-solidifying amorphous alloy is iron-based.

7. The method as described in claim 1 , wherein the bulk-solidifying amorphous alloy is free from Ni.

8. The method as described in claim 1 , wherein the bulk-solidifying amorphous alloy is nickel-based.

9. A method of manufacturing an object, comprising:
softening a feedstock of a bulk-solidifying amorphous alloy below the melting temperature of the bulk-solidifying amorphous alloy and under a vacuum, the bulk-solidifying amorphous alloy being iron-based or nickel-based, having a glass transition temperature lower than 400° C., and having a hardness of at least 4 GPa;
shaping the softened feedstock to form a near-to-net shape object; and
quenching the object at a cooling rate sufficient to ensure that the bulk solidifying amorphous alloy has a substantially amorphous atomic structure.

10. The method as described in claim 9 , wherein the bulk-solidifying amorphous alloy further comprises a ductile metallic crystalline phase precipitate.

11. The method as described in claim 9 , wherein the step of shaping comprises molding the softened feedstock.

12. The method as described in claim 9 , wherein the bulk-solidifying amorphous alloy is iron-based.

13. The method as described in claim 9 , wherein the bulk-solidifying amorphous alloy is free from Ni.

14. The method as described in claim 9 , wherein the bulk-solidifying amorphous alloy is nickel-based.

15. The method as described in claim 9 , the bulk-solidifying amorphous alloy having a hardness of 7.5 GPa and higher.

16. The method as described in claim 9 , wherein the bulk solidifying amorphous alloy has a critical cooling rate of 100° C./second or less.

Assignees

• Crucible Intellectual Prop Llc
• Crucible Intellectual Propery Llc

Inventors

• Peker Atakan
• Kim Choongnyun Paul
• Pham Quoc Tran

Classifications

• A61K6/20

  Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish · CPC title

• A61K6/84

  comprising metals or alloys · CPC title

• C22C45/10

  with molybdenum, tungsten, niobium, tantalum, titanium, or zirconium {or Hf} as the major constituent · CPC title

• C22C45/04

  with nickel or cobalt as the major constituent · CPC title

• C22F1/02

  in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D1/76) · CPC title