Patent EP0025263A1 successfully refreshed from Google Patents.
EP0025263A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Nickel and/or cobalt base alloys for gas turbine engine components
Assignee: UK Secretary of State for Defence
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Filing: 1980-07-16
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Granted: —
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Expires: 2000-07-16
Abstract
Abstract An alloy comprising by weight percent from 30%to 40% Cr, from 1 %to 5%Ti, from 1% to 10%Al, balance Ni is used for coating gas turbine components to give protection against oxidation - and sulphidation - corrosion. A specific alloy having the composition Ni-37 Cr-3 Ti-2Al is applied to a blade fabricated from a nickel superalloy by sputter ion plating to give an overlay coating up to 100 µm thick. Preferably a platinum intermediate layer is flashed on to the substrate before coating. The coating alloy can additionally include rare earths, hafnium or silicon.
Inventors
- 👤 James Edward Restall
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 19:29
CPC Classifications
C; C23; C23C; C23C30/00; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/07; C23C28/00; C23C28/02; C23C28/023; F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/288; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12875; Y10T428/12944
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
16 words
An alloy suitable for use as an overlay coating on nickel-base materials comprising by weight percent,
Claim 2
Dependent Claim
16 words
An alloy suitable for use as an overlay coating on nickel-base materials comprising by weight percent,
Claim 3
Dependent Claim
20 words
An alloy according to claim 1 in which cobalt is substi- ted for at least part of the nickel balance.
Claim 4
Dependent Claim
21 words
An alloy according to claim 2 having the composition or or substantially the same composition as below, expressed in weight percent,
Claim 7
Dependent Claim
20 words
An alloy according to claim 1 or claim 2 with the addition of up to 10 wt percent of silicon.
Claim 8
Dependent Claim
12 words
An alloy according to claim 4 having the composition by weight percent,
Claim 9
Dependent Claim
20 words
An alloy according to claim 5 having the composition, or substantially the same composition as below, expressed in weight percent,
Claim 10
Dependent Claim
17 words
An alloy according to claim 1 or claim 2 with the addition of 0.1/3% of rare earths.
Claim 11
Dependent Claim
20 words
An alloy according to claim 1 or claim 2 with the addition of up to 10 wt percent of hafrium.
Claim 12
Dependent Claim
28 words
An article comprising a nickel-base substrate and an overlay coating of an alloy having the composition Ni/Co - 30/40 wt% Cr - 1/5 wt% Ti - 2/10% Al
Claim 13
Dependent Claim
28 words
An article comprising a nickel-base substrate and an overlay coating of an alloy having the composition Ni/Co - 30/40 wt% Cr - 1/5 wt% Ti - 2/10% Al
Claim 14
Dependent Claim
30 words
An article according to claim 9 in which a layer not exceeding 25 µm of platinum or other precious metal is deposited on the substrate prior to the overlay coating.
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