Composition and Method for Inhibiting Corrosion

Patent metadata

Field	Value
Publication number	US-2016347955-A1
Application number	US-201615231977-A
Country	US
Kind code	A1
Filing date	Aug 9, 2016
Priority date	Jan 3, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

A corrosion inhibiting composition including a liquid carrier having a surface tension of at most about 35 dynes/cm and an electrically conductive nanomaterial dispersed in the carrier.

First claim

What is claimed is:

1 . A method for inhibiting corrosion of a plated structure comprising:
applying to said plated structure a composition comprising:
a liquid carrier having a surface tension of at most about 35 dynes/cm; and
an electrically conductive nanomaterial dispersed in said carrier.

2 . The method of claim 1 wherein said plated structure comprises a metallic substrate and plating on said metallic substrate, and wherein said applying step comprises applying said composition to said plating.

3 . The method of claim 2 wherein said plating comprises microcracks, and wherein at least a portion of said electrically conductive nanomaterial is received in said microcracks.

4 . The method of claim 2 wherein said plating comprises at least one of chromium and nickel.

5 . The method of claim 1 wherein said applying step comprising brushing said composition onto said plated structure.

6 . The method of claim 1 further comprising removing excess quantities of said composition from said plated structure.

7 . The method of claim 6 wherein said removing step comprises at least one of wiping and washing.

8 . The method of claim 6 wherein said removing step is performed after the expiration of a dwell time of at least 30 minutes.

9 . The method of claim 8 wherein said dwell time is at least 60 minutes.

10 . The method of claim 1 further comprising drying said composition.

11 . The method of claim 1 wherein said electrically conductive nanomaterial comprises at least one of carbon nanoplatelets, graphene nanoplatelets, carbon nanotubes and carbon nanorods.

12 . The method of claim 1 wherein said surface tension is at most about 30 dynes/cm.

13 . The method of claim 1 wherein said surface tension is at most about 25 dynes/cm.

14 . The method of claim 1 wherein at least a portion of said electrically conductive nanomaterial has at least one dimension ranging from about 1 to about 500 nanometers.

15 . The method of claim 1 wherein at least a portion of said electrically conductive nanomaterial has at least one dimension ranging from about 1 to about 100 nanometers.

16 . The method of claim 1 wherein at least a portion of said electrically conductive nanomaterial has at least one dimension ranging from about 1 to about 10 nanometers.

17 . The method of claim 1 wherein said electrically conductive nanomaterial comprises graphene nanoplatelets.

18 . The method of claim 1 wherein said electrically conductive nanomaterial comprises carbon nanotubes.

19 . The method of claim 1 wherein a weight ratio of said liquid carrier to said electrically conductive nanomaterial ranges from about 120:1 to about 30:1.

20 . The method of claim 1 wherein said weight ratio ranges from about 80:1 to about 60:1.

Assignees

• Boeing Co

Inventors

• Lawless Lawrence M
• Griffin Bruce M
• Scott Craig W

Classifications

• C23F11/18

  using inorganic inhibitors · CPC title

• C09D5/08

  Anti-corrosive paints · CPC title

• C25D5/48

  After-treatment of electroplated surfaces · CPC title

• C09D7/61

  inorganic · CPC title

• C23C18/1689

  After-treatment · CPC title