Component with a substrate and a protective layer

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

This patent describes a protective coating system for metallic components, particularly those exposed to high temperatures, such as turbine blades in gas turbines. The invention involves a two-layer coating structure: an intermediate NiCoCrAlY layer on the substrate and an outer β-NiAl-based layer with specific aluminum and cobalt content. The specific composition and structure strengthen the bond between layers, providing enhanced resistance against oxidation and corrosion, as well as improved durability in harsh thermal environments.

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

• Coating and protecting turbine blades and vanes in gas turbines used for power generation and aviation.
• Providing heat and oxidation-resistant surfaces for combustion chambers in turbines.
• Protecting high-temperature components in industrial furnaces and reactors.
• Enhancing the service life of metallic parts exposed to extreme thermal and corrosive conditions, such as in aerospace and energy sectors.
• Improving thermal barrier coatings for advanced jet engines.

BenefitsContent extracted from patent full text and abstract with AI.

• Improved oxidation and corrosion resistance, leading to longer component life under high-temperature conditions.
• Stronger bonding between coating layers reduces risk of coating failure due to thermal expansion mismatches.
• Enhanced durability and reliability of protected components, resulting in reduced maintenance and downtime.
• Potential for thinner and lighter coatings without sacrificing protective performance.
• Versatile application on a range of metallic superalloys used in advanced engineering sectors.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a component (6) with 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) arranged on the intermediate NiCoCrAlY layer zone (7), wherein the outer layer zone (8) posses the structure of the phase ²-NiAl and comprises (in wt%): 17% - 23% A1, 6% - 11% Co, and Ni balance.