Perovskite manganites for use in coatings

• US 20040005483A1
• Filed: 03/07/2003
• Published: 01/08/2004
• Est. Priority Date: 03/08/2002
• Status: Abandoned Application

• Current Assignee: Northern Illinois University
• Original Assignee: Northern Illinois University
• Inventors: Lin, Chhiu-Tsu
• Application Number:
  US10/383,457
• Publication Number:
  US 20040005483A1
• Time in Patent Office: Days
• US Class Current: 428/702
• CPC Class Codes: B82Y 25/00 Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
• CPC Class Codes: C04B 2235/3213 Strontium oxides or oxide-forming salts thereof
• CPC Class Codes: C04B 2235/3227 Lanthanum oxide or oxide-forming salts thereof
• CPC Class Codes: C04B 2235/449 Organic acids, e.g. EDTA, citrate, acetate, oxalate
• CPC Class Codes: C04B 2235/656 characterised by specific heating conditions during heat treatment
• CPC Class Codes: C04B 2235/768 Perovskite structure ABO3
• CPC Class Codes: C04B 2235/96 Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
• CPC Class Codes: C04B 35/016 based on manganites
• CPC Class Codes: C23C 18/1216 Metal oxides C23C18/1212 takes precedence
• CPC Class Codes: C23C 30/00 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 Class Codes: H01F 10/007 ultrathin or granular films H01F10/005 and H01F10/3227 take precedence; applying ultrathin or granular layers to substrates H01F41/301
• CPC Class Codes: H01F 10/1933 Perovskites
• CPC Class Codes: H01M 8/124 characterised by the process of manufacturing or by the material of the electrolyte
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A film having a large thin layer, preferably of a nano-micrometer thickness, of at least one perovskite magnanite. A coating for blocking EMIs, in particular the directed energy pulses, said coating comprising at least one nanostructured perovskite manganite in an environmentally friendly carrier. A method of protecting a surface by applying coating having at least one perovskite manganite in an environmentally friendly carrier. A barrier coating having at least one perovskite manganite in an environmentally friendly carrier.

Claims

1. A film comprising an expansive thin layer of a least one perovskite magnanite

2. The film according to claim 1, wherein said perovskite manganite includes a nanostructures including nanograin, nanoparticle size, and nanothickness of a film.

3. The film according to claim 1, wherein said film includes an amount of said perovskite manganite in a range of 10-100%.

4. The film according to claim 1, wherein said perovskite manganite is selected from the group consisting essentially of soluble acetates of manganese, rare earth metals, divalent alkaline earth metals, and transition metals.

5. The film according to claim 1 for use in blocking EMIs

6. The film according to claim 5, wherein said film blocks directed energy pulses and directed energy weapons.

21. Electronic devices having a film as set forth in claim 1.

22. Mechanical devices having a film as set forth in claim 1.

23. OEM parts having a film as set forth in claim 1.

7. A coating composition for blocking EMIs, said coating comprising at least one perovskite manganite in an environmentally friendly carrier.

8. The coating according to claim 7, wherein said perovskite manganite is selected from the group consisting essentially of soluble acetates of manganese, rare earth metals, divalent alkaline earth metals, and transition metals.

9. The coating according to claim 7, wherein said environmentally friendly carrier is an aqueous solution that enables scaleup processing of manganites.

10. The coating according to claim 7, wherein said coating is capable of being applied to electronic devices, mechanical devices, and original equipment manufacturing parts.

11. A magnetoresistant coating comprising at least one perovskite manganite in an-environmentally friendly carrier.

12. The coating according to claim 11, wherein said perovskite manganite is selected from the group consisting essentially of soluble acetates of manganese, rare earth metals, divalent alkaline earth metals, and transition metals.

13. The coating according to claim 11, wherein said environmentally friendly carrier is an aqueous solution.

14. The coating according to claim 11, wherein said coating can be applied to a surface in need of such coating using a technique selected from the group consisting essentially of spray-coating, spin-coating, roller-coating, and dip-coating.

15. A barrier coating comprising at least one perovskite manganite in an environmentally friendly carrier.

16. The coating according to claim 15, wherein said perovskite manganite is selected from the group consisting essentially of soluble acetates of manganese, rare earth metals, divalent alkaline earth metals, and transition metals.

17. The coating according to claim 15, wherein said environmentally friendly carrier is an aqueous solution.

18. The coating according to claim 15, wherein said barrier is a selected from the group consisting essentially of a high temperature resistance barrier, a corrosion inhibition barriers, and radar-absorbing materials for signature reduction barriers.

19. A method of protecting a surface by applying a coating comprising at least one perovskite manganite in an environmentally friendly carrier.

20. The method according to claim 19, wherein said applying step includes applying the coating using a technique selected from the group consisting essentially of spray-coating, spin-coating, roller-coating, and dip-coating.