High energy density shock discharge materials

• US 8,821,748 B1
• Filed: 11/12/2010
• Issued: 09/02/2014
• Est. Priority Date: 11/13/2009
• Status: Active Grant

• Current Assignee: TRS Technologies, Inc. (Tayca Corporation)
• Original Assignee: TRS Technologies, Inc. (Tayca Corporation)
• Inventors: Hackenberger, Wesley S., Alberta, Edward F.
• Primary Examiner(s): WIESE, NOAH S
• Application Number:
  US12/945,655
• Time in Patent Office: 1,390 Days
• Field of Search: 501/135, 501/136, 252/62.9 R, 252/62.9 PZ, 257/295, 310/363
• US Class Current: 252/62.9PZ
• CPC Class Codes: H10N 30/8548 Lead based oxides
• CPC Class Codes: H10N 30/8554 Lead zirconium titanate based

Abstract

A ceramic or single crystal ferroelectric and a method of manufacture are disclosed. The ceramics and single crystals of the present disclosure are located near phase boundaries between ferroelectric and antiferroelectric phases. These ceramics, single crystals, and composite may be used in pulsed power applications.

Claims

1. A high energy density material, comprising:

a material having the general formula selected from the group consisting of β

-PbZrO₃, β

-PbTiO₃, and β

-PbZrO₃—

PbTiO₃;

wherein β

=Pb(In_1/2Nb_1/2)O₃, β

=Bi(Zn_1/2Zr_1/2)O₃, or β

=Sr(Cu_1/3Nb_2/3)O₃.

2. The high energy density material of claim 1, where β

=Pb(In_1/2Nb_1/2)O₃.

7. The high energy density material of claim 1, where β

=Sr(Cu_1/3Nb_2/3)O₃.

8. The high energy density material of claim 1, where β

=Bi(Zn_1/2Zr_1/2)O₃.

9. The high energy density material of claim 1, wherein a Pb is replaced with greater than 0 and up to and including 100 mol % of a cation of an element selected from the group consisting of La, Bi, Ba, Sr, and/or Ca.

10. The high energy density material of claim 1, wherein a solid solution of the high density material is ferroelectric but close to a ferroelectric-antiferroelectric phase boundary for the high density material.

11. The high density material of claim, 2, having the formula Pb(In_1/2Nb_1/2)_0.18Zr_0.82O₃.

13. A ferroelectric generator element comprising the high energy density material of claim 1.

3. A high energy density material, comprising a material having the general formula β

-PbZrO₃ or β

-PbTiO₃, where β

=Pb(Yb_1/2Nb_1/2)O₃, β

=Pb(Fe_2/3W_1/3)₃, or β

=Pb(Zn_1/2Nb_1/2)O₃.

4. The high energy density material of claim 3, where β

=Pb(Yb_1/2Nb_1/2)O₃.

5. The high energy density material of claim 3, where β

=Pb(Zn_1/2Nb_1/2)O₃.

6. The high energy density material of claim 3, where β

=Pb(Fe_2/3W_1/3)O₃.

12. A high energy density material, having the formula Pb_0.995In_0.1782Nb_0.1782Zr_0.8118Nb_0.01O₃.