Metallic glass-alloys for capacitor anodes
AssigneeCase Western Reserve University
InventorsGerhard E. Welsch, Donald M. McGervey, Dong Myoung Lee
Life of this patent
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Abstract
A metallic glass formed from a Be-containing alloy near eutectic composition has the chemical formula: (M1-aXa)bBecYdZe wherein M is Ti, Zr, Ta, or Hf; X is Nb, Ta, or Hf; X is not same element as M; Y is at least one of Ti, Zr, Ta, Nb, or Hf; and Y is not the same element as M and/or X.
Claims22
A metallic glass formed from a Be-containing alloy near eutectic composition having the chemical formula:
- (M1-aXa)bBecYdZe
- wherein M is Ti, Zr, Ta, or Hf;
- X is Nb, Ta, or Hf;
- X is not same element as M;
- Y is at least one of Ti, Zr, Ta, Nb, or Hf;
- Y is not the same element as M and/or X;
- and
- Z is at least one additive element,
- where a is an atomic fraction of a whole and between about 0.1 and about 0.9
- b is about 35 atomic % to about 80 atomic %,
- c is about 20 atomic % to about 65 atomic %,
- d is between 0 and about 10 atomic %, and
- e is between 0 and about 10 atomic %.
An anode for an electrolytic capacitors comprising a homogenous metallic glass alloy having the chemical formula:
- (M1-aXa)bBecYdZe
- wherein M is Ti, Zr, Ta, or Hf;
- X is Nb, Ta, or Hf;
- X is not same element as M;
- Y is at least one of Ti, Zr, Ta, Nb, or Hf;
- Y is not the same element as M and/or X;
- and
- Z is at least one additive element,
- where a is an atomic fraction of a whole and between about 0.1 and about 0.9
- b is about 35 atomic % to about 80 atomic %,
- c is about 20 atomic % to about 65 atomic %,
- d is between 0 and about 10 atomic %, and
- e is between 0 and about 10 atomic %.
An anode comprising an oxide dielectric film grown anodically on a homogenous metallic glass alloy having the chemically formula:
- (M1-aXa)bBecYdZe
- wherein M is Ti, Zr, Ta, or Hf;
- X is Nb, Ta, or Hf;
- X is not same element as M;
- Y is at least one of Ti, Zr, Ta, Nb, or Hf;
- Y is not the same element as M and/or X;
- and
- Z is at least one additive element,
- where a is an atomic fraction of a whole and between about 0.1 and about 0.9
- b is about 35 atomic % to about 80 atomic %,
- c is about 20 atomic % to about 65 atomic %,
- d is between 0 and about 10 atomic %, and
- e is between 0 and about 10 atomic %.
Dependencies are inferred from the claim text.