Coating for a threaded component and a method of applying the same

Patent metadata

Field	Value
Publication number	US-2017030395-A1
Application number	US-201615202151-A
Country	US
Kind code	A1
Filing date	Jul 5, 2016
Priority date	Jul 30, 2015
Publication date	Feb 2, 2017
Grant date	—

Abstract

A method of providing a threaded fastener with a multi-layered coating comprises the step of using a vapour deposition process to apply a multi-layered coating to a threaded portion of the threaded fastener, each layer of the multi-layered coating being formed from a coating material selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof.

First claim

What is claimed is:

1 . A method of providing a threaded fastener with a multi-layered coating, the threaded fastener comprising a threaded portion, the method comprising the step of:
using a vapour deposition process to apply a multi-layered coating to the threaded portion, each layer of the multi-layered coating being formed from a coating material selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof.

2 . The method as claimed in claim 1 , wherein the vapour deposition process is a physical vapour deposition process, or a chemical vapour deposition process.

3 . The method as claimed in claim 1 , wherein the multi-layered coating comprises between ten and seventy individual coating layers.

4 . The method as claimed in claim 1 , comprising the additional step of:
performing ion implantation during the vapour deposition process, using ions from a material selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof.

5 . The method as claimed in claim 1 , wherein the step of:
using a vapour deposition process to apply a multi-layered coating to the threaded portion, each layer of the multi-layered coating being formed from a coating material selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof,
comprises the step of:
using a vapour deposition process to apply a plurality of layers, of a coating material, to the threaded portion, each of the plurality of layers having a thickness in the range of 10 nm to 100 nm, the coating material being selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof.

6 . The method as claimed in claim 5 , wherein the step of:
using a vapour deposition process to apply a plurality of layers, of a coating material, to the threaded portion, each of the plurality of layers having a thickness in the range of 10 nm to 100 nm, the coating material being selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof,
comprises the step of:
using a vapour deposition process to apply a plurality of layers, of a coating material, to the threaded portion, each of the plurality of layers having a thickness in the range of 10 nm to 100 nm, to form a multi-layered coating having a thickness in the range of 0.5 μm to 15 μm, the coating material being selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof.

7 . A threaded fastener comprising a threaded portion,
wherein the threaded portion is coated with a multi-layer coating, each layer of the multi-layered coating being formed from a coating material selected from the group comprising titanium, chromium, nickel, platinum, tantalum, and combinations thereof.

8 . The threaded fastener as claimed in claim 7 , wherein the multi-layered coating comprises between ten and seventy individual coating layers.

9 . The threaded fastener as claimed in claim 7 , wherein each layer of the multi-layer coating has a thickness in the range of 10 nm to 100 nm.

10 . The threaded fastener as claimed in claim 7 , wherein the multi-layer coating has a thickness in the range of 0.5 μm to 15 μm.

Assignees

• Rolls Royce Plc

Inventors

• Pattinson Glen
• Pallett Lloyd

Classifications

• C23C14/14

  Metallic material, boron or silicon · CPC title

• F16B33/06 Primary

  Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure {or fretting (corrosion preventing means F16B33/008; settable coatings for locking threaded members F16B39/225; deformable coatings for locking threaded members F16B39/34)} · CPC title

• C23C14/16

  on metallic substrates or on substrates of boron or silicon · CPC title

• C23C16/06

  characterised by the deposition of metallic material · CPC title

• C23C28/023

  only coatings of metal elements only · CPC title