Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder Description:
Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder is a specialized cermet blend composed of a CoCrAlYSi alloy and hexagonal boron nitride (hBN), engineered for thermal spray coatings that provide exceptional protection against metal-to-metal wear in titanium alloy parts. This powder is particularly effective in applications where space constraints limit coating to one surface, such as compressor blades' dovetail attachment to discs. High-strength coatings with low hBN content can be applied using the High Velocity Oxygen Fuel (HVOF) process. In contrast, lower-strength coatings with high hBN content suit Atmospheric Plasma Spray (APS) applications. Coatings made from this powder have demonstrated superior performance up to 450°C (840°F), significantly outperforming CuNiIn coatings in terms of coefficient of friction, disc wear, and pit depth. These coatings exhibit high compressive strength, making them suitable for use on compressor blades of all sizes, including large blades in the fan and low-pressure compressor sections. Each application should be validated under conditions that closely mimic actual service conditions.
Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder Specifications:
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Nominal Chemistry
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Co 25Cr 5Al 0.27Y 1.75Si 15HBN
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Nom. Particle Size Distr.(µm)
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-177 +10
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Morphology
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Irregular
Spheroidal
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Max. Service Temperature (°C)
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450
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Range of Apparent Density (g/cm3)
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2.06
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Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder Applications:
1. Aerospace Industry: Used for coating compressor blades in jet engines to protect against wear, fretting, adhesion, and galling, particularly in high-stress areas like dovetail attachments.
2. Gas Turbines: Applied to turbine components to enhance durability and performance under high-temperature conditions, improving the efficiency and lifespan of the turbines.
3. Power Generation: Utilized in power plants for coating parts in steam and gas turbines, helping to prevent wear and extend the service life of critical components.
4. Automotive Industry: Employed in high-performance engines to coat components that experience significant friction and wear, such as valves and turbocharger parts, thereby improving engine efficiency and reliability.
5. Industrial Machinery: Used to protect parts in heavy machinery and equipment that operate under severe conditions, reducing maintenance costs and downtime.
6. Marine Applications: Applied to marine engine and equipment components to provide corrosion and wear resistance in harsh marine environments.
7. Oil and Gas Industry: Used for coating drilling equipment and components exposed to extreme wear and corrosive conditions, enhancing their performance and longevity.
8. Metalworking: Utilized in tools and dies that are subject to high friction and wear during metal forming processes, improving their durability and precision.
Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder Packing:
Our Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder FAQ:
Q1: What kind of coating process can I use for this powder?
A1: Co 25Cr 5Al 0.27Y 1.75Si 15HBN Powder can be applied by both High-Pressure Oxygen Fuel Spraying (HVOF) and Atmospheric Plasma Spraying (APS) processes. HVOF is suitable for high-strength coatings with a low hBN content, while APS is suitable for low-strength coatings with a high hBN content.
Q2: What is the operating temperature range for this coating?
A2: The Co 25Cr 5Al 0.27Y 1.75Si 15HBN coating performs well at temperatures up to 450°C (840°F) and maintains its protective properties at these temperatures.
Q3: What protective properties does the coating provide?
A3: The coating provides excellent metal-to-metal wear protection against friction, adhesion, and abrasion, especially between titanium alloy components. It also exhibits high compressive strength and excellent wear resistance.
