Diamond-like nanocomposite corrosion resistant coatings

• US 5,728,465 A
• Filed: 06/07/1995
• Issued: 03/17/1998
• Est. Priority Date: 05/03/1991
• Status: Expired due to Term

• Current Assignee: Sulzer Metaplas GmbH
• Original Assignee: Advanced Refractory Technologies, Inc.
• Inventors: Goel, Arvind, Dorfman, Veniamin F.
• Primary Examiner(s): TURNER, ARCHENE A
• Application Number:
  US08/472,552
• Time in Patent Office: 1,014 Days
• Field of Search: 428/408, 428/698, 428/446, 428/697, 428/699
• US Class Current: 428/408
• CPC Class Codes: A61F 2310/00574 Coating or prosthesis-covering structure made of carbon, e.g. of pyrocarbon
• CPC Class Codes: A61L 27/30 Inorganic materials
• CPC Class Codes: A61L 27/303 Carbon
• CPC Class Codes: A61L 27/306 Other specific inorganic materials not covered by A61L27/303 - A61L27/32
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C04B 35/10 based on aluminium oxide
• CPC Class Codes: C04B 41/009 characterised by the material treated
• CPC Class Codes: C04B 41/4554 the coating or impregnating material being an organic or organo-metallic precursor of an inorganic material
• CPC Class Codes: C04B 41/50 with inorganic materials
• CPC Class Codes: C04B 41/5002 Diamond
• CPC Class Codes: C04B 41/85 with inorganic materials
• CPC Class Codes: C23C 14/0036 Reactive sputtering
• CPC Class Codes: C23C 14/06 characterised by the coating material C23C14/0021 , C23C14/04 take precedence
• CPC Class Codes: C23C 14/0605 Carbon
• CPC Class Codes: C23C 14/221 Ion beam deposition C23C14/46, C23C14/48 take precedence
• CPC Class Codes: C23C 16/30 Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
• CPC Class Codes: C23C 16/4483 using a porous body
• CPC Class Codes: C23C 16/4485 by evaporation without using carrier gas in contact with the source material C23C16/4486 takes precedence
• CPC Class Codes: C23C 16/45568 Porous nozzles
• CPC Class Codes: C23C 16/503 using dc or ac discharges
• CPC Class Codes: F42B 12/80 : Coatings
• CPC Class Codes: G02B 1/105 : Protective coatings
• CPC Class Codes: G02B 1/111 : using layers comprising organic materials
• CPC Class Codes: G02B 1/14 : Protective coatings, e.g. hard coatings
• CPC Class Codes: G11B 5/8408 : protecting the magnetic layer
• CPC Class Codes: Y10T 428/30 : Self-sustaining carbon mass or layer with impregnant or other layer

Abstract

A method for inhibiting corrosion of a substrate by applying to a substrate a corrosion resistant coating comprising a diamond-like solid state material having interpenetrating atomic scale networks of class of diamond-like solid state materials formed from interpenetrating networks comprising a first network of carbon in a diamond-like carbon network stabilized by hydrogen, a silicon network stabilized by oxygen, and optionally at least one network made from dopant elements or dopant compounds containing elements from groups 1-7b and 8 of the periodic table.

Claims

1. A corrosion resistant material made from a substrate susceptible to corrosion and a corrosion resistant coating, said coating made from a class of diamond-like solid state materials formed from interpenetrating networks, said networks comprising a first network of diamond-like carbon stabilized by hudrogen, a second silicon network stabilized by oxygen and, optionally, at least one network of dopant elements, or dopant compounds containing elements from groups 1-7b and 8 of the periodic table.

2. The material according to claim 1 wherein the carbon, hydrogen, silicon and oxygen are obtained from the decomposition of an organosiloxane having from about 1 to about 10 silicon atoms.

3. The material according to claim 2 wherein the organosiloxane is polyphenylmethylsiloxane.

4. The material according to claim 1 wherein the carbon content is from about 40 wt. % to about 98 wt. %.

5. The material according to claim 1 wherein the carbon content is from about 50 wt. % to about 98 wt. %.

6. The material according to claim 1 wherein the carbon to silicon weight ratio is from about 2:

1 to about 8;

1.

7. The material according to claim 1 wherein the silicon to oxygen weight ration is from about 0.5:

1 to about 3;

1.

8. The material according to claim 1 wherein the dopant elements are selected from the group consisting of B, Si, Ge, Te, O, Mo, W, Ta, Nb, Pd, Ir, Pt, V, Fe, Co, Mg, Mn, Ni, Ti, Zr, Cr, Re, Hf, Cu, Al, N, Ag, and Au.

9. The material according to claim 1 wherein the carbon content of the solid state material is at least 40 atomic % of the coating, the hydrogen content is up to about 40 atomic % of the carbon, and the sum of the silicon, oxygen and dopants together is greater than about 2 atomic % of the coating.