Coatings containing carbon composite fillers and methods of manufacture

Patent metadata

Field	Value
Publication number	US-2017321069-A1
Application number	US-201615144856-A
Country	US
Kind code	A1
Filing date	May 3, 2016
Priority date	May 3, 2016
Publication date	Nov 9, 2017
Grant date	—

Abstract

An article comprises a substrate, a coating disposed on a surface of the substrate. The coating comprises a carbon composite dispersed in one or more of the following: a polymer matrix; a metallic matrix; or a ceramic matrix. The carbon composite comprises carbon and a binder containing one or more of the following: SiO 2 ; Si; B; B 2 O 3 ; a filler metal; or an alloy of the filler metal.

First claim

What is claimed is:

1 . An article comprising
a substrate, a coating disposed on a surface of the substrate, the coating comprising a carbon composite dispersed in one or more of the following: a polymer matrix; a metallic matrix; or a ceramic matrix, wherein the carbon composite comprises carbon and a binder containing one or more of the following: SiO 2 ; Si; B; B 2 O 3 ; a filler metal; or an alloy of the filler metal, and the filler metal comprises one or more of the following: aluminum; copper; titanium; nickel; tungsten; chromium; iron; manganese; zirconium; hafnium; vanadium; niobium; molybdenum; tin; bismuth; antimony; lead; cadmium; or selenium.

2 . The article of claim 1 , wherein the carbon composite is present in an amount of about 0.1 wt. % to about 75 wt. % based on the total weight of the coating.

3 . The article of claim 1 , wherein the coating has a thickness of about 5 μm to about 10 mm.

4 . The article of claim 1 , wherein the carbon composite comprises at least two carbon microstructures; and a binding phase disposed between the at least two carbon microstructures.

5 . The article of claim 4 , wherein the binding phase comprises a binder layer and an interface layer bonding one of the at least two carbon microstructures to the binder layer, wherein the interface layer comprises one or more of the following: a C-metal bond; a C—B bond; a C—Si bond; a C—O—Si bond; a C—O-metal bond; or a metal carbon solution.

6 . The article of claim 1 , wherein the carbon comprises graphite.

7 . The article of claim 1 , wherein the coating comprises a metallic matrix including one or more of the following: Ni; Cu; Ag; Au; Sn; Zn; Fe; In; W; Ti; Co; Al; Mg; Cr; or Mo; or an alloy thereof.

8 . The article of claim 1 , wherein the coating comprises a ceramic matrix comprising one or more of the following: an oxide-based ceramic; nitride-based ceramic; carbide-based ceramic; boride-based ceramic; or silicide-based ceramic.

9 . The article of claim 1 , wherein the polymer matrix comprises a thermoplastic polymer, an elastomer, or a combination thereof.

10 . The article of claim 1 , further comprising a binding layer disposed between the coating and the substrate.

11 . The article of claim 1 , wherein the substrate comprises one or more of the following: a metal; a polymer; or ceramics.

12 . The article of claim 1 , wherein the article is a coated bearing, a coated pipeline, a coated valve, a coated piston, or a coated shaft.

13 . A method of coating a substrate, the method comprising:
depositing a matrix material and a carbon composite on a surface of a substrate, the carbon composite comprising carbon and a binder; the binder comprising one or more of the following: SiO 2 ; Si; B; B 2 O 3 ; a metal; or an alloy of the metal; and the metal comprising one or more of the following: aluminum; copper; titanium; nickel; tungsten; chromium; iron; manganese; zirconium; hafnium; vanadium; niobium; molybdenum; tin; bismuth; antimony; lead; cadmium; or selenium.

14 . The method of claim 13 , further comprising combining a matrix material with a carbon composite to form a coating composition.

15 . The method of claim 14 , wherein depositing a matrix material and a carbon composite comprises disposing the coating composition on a surface of the substrate.

16 . The method of claim 15 , wherein the matrix material comprises a material or a precursor for the polymer matrix, and combing the matrix material with the carbon composite comprises dispersing the carbon composite in a dispersion of the matrix material.

17 . The method of claim 16 , wherein disposing the coating composition comprises one or more of the following: spray coating; brushing; screen casting; blade casting; drop casting; spin coating; or molding.

18 . The method of claim 15 , wherein the matrix material comprises a material or a precursor for the metallic or ceramic matrix, and the matrix material is combined with a carbon composite and an organic compound to form a coating composition in the form of a paste.

19 . The method of claim 18 , wherein disposing the coating composition comprises brushing, immersion dipping, or molding.

20 . The method of claim 13 , wherein disposing the matrix material and the carbon composite is an all-solid state coating process.

21 . The method of claim 14 , wherein disposing the matrix material and the carbon composite comprises thermal spraying the matrix material and the carbon composite simultaneously on the surface of the substrate.

22 . The method of claim 14 , wherein the coating comprises a metallic matrix, and depositing the matrix material and the carbon composite is conducted via electroplating.

Assignees

• Zhao Lei
• Xu Zhiyue
• Richard Bennett M
• Baker Hughes Inc

Inventors

• Zhao Lei
• Xu Zhiyue
• Richard Bennett M

Classifications

• C23C26/00

  Coating not provided for in groups C23C2/00 - C23C24/00 · CPC title

• C09D5/24

  Electrically-conducting paints {(conductive materials H01B1/00)} · CPC title

• C25D15/00

  Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires · CPC title

• C04B41/88

  Metals · CPC title

• B05D7/14

  to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23) · CPC title