Component with a protective layer

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a component, such as a gas turbine blade or vane, with an advanced protective layer system. The protective system consists of a substrate covered with a specially formulated intermediate layer containing nickel, cobalt, chromium, aluminum, yttrium, rhenium, and potentially other elements, topped with an outer layer composed of nickel and aluminum or similar alloys. This layer structure results in enhanced bonding strength, oxidation resistance, and durability, making it particularly suitable for components exposed to high temperatures and harsh environments.

Use CasesContent extracted from patent full text and abstract with AI.

• Turbine blades and vanes in gas turbines for power generation or aviation
• Heat shields in gas turbine combustion chambers
• Other high-temperature components in jet engines or industrial turbines
• Protective layers for superalloys in environments requiring both heat and corrosion resistance
• Components in aerospace, energy, and automotive sectors needing durable, oxidation-resistant surfaces

BenefitsContent extracted from patent full text and abstract with AI.

• Superior oxidation and corrosion resistance at high temperatures
• Stronger bonding between substrate, intermediate, and outer protective layers leading to increased component longevity
• Applicable using standard coating techniques (e.g., plasma spraying), enabling ease of manufacturing
• Reduces thermal expansion mismatches that could cause layer failure
• Can be customized by adding elements like silicon, tantalum, hafnium, and rare earths for further property enhancements
• Supports operation at higher turbine temperatures, which can increase efficiency and performance of turbines or engines
• Facilitates reduced maintenance and longer service intervals for critical industrial and aerospace parts

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a component (6) having a substrate (2) and a protective layer (9), which consists of an intermediate NiCoCrAlY layer zone (7) on or near the substrate (2) and an outer layer zone (8) which is arranged on the intermediate NiCoCrAlY layer zone (7), which is characterized in that the intermediate NiCoCrAlY layer zone (7) comprises of (in wt%): 24 - 26% Co, 16 - 18% Cr, 9.5 - 11% Al, 0.3 - 0.5 Y, 1 - 1.8% Re and Ni balance.