NiCoCrAlY Spherical Alloy Powder Description
NiCoCrAlY Spherical Alloy Powder is a critical component within the MCrAlY coating family, specifically engineered for high-temperature oxidation and corrosion protection. Serving as an essential protective layer for gas turbine and aero-engine blades, this coating significantly enhances the oxidation resistance of high-temperature alloys, thereby preventing premature failure and extending service life in extreme environments.
NiCoCrAlY Spherical Alloy Powder Specifications
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Sphericity
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88-92%
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Hollow Sphere Ratio
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<1.5%
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Satellite Particles
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<10%
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Appearance
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Silver gray powder
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Flowability
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<25s/50g
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Bulk Density
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>3.8g/cm3
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True Density
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7.52g/cm3
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Thermal Conductivity
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15.97W/cm3
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Melting Range
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1300℃
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Theoretical Chemical Composition Wt%
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Item
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Ni
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Cr
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Co
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Ta
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Y
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Al
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S
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C
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O
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NiCoCrAlY
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Bal.
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19.9
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23.38
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4.1
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0.61
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8.85
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0.001
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0.01
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0.022
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NiCoCrAlY Spherical Alloy Powder Applications
1. Aerospace Industry
- Turbine Blades & Vanes: Protects jet engine components from high-temperature oxidation and hot corrosion.
- Combustion Chambers & Afterburners: Provides thermal barriers and oxidation resistance in extreme heat environments.
- Exhaust Nozzles & Ducts: Enhances durability against thermal cycling and metal fatigue.
2. Power Generation
- Gas Turbines: Utilized in industrial gas turbines to prevent oxidation and corrosion from high-temperature combustion gases.
- Steam Turbines & Boiler Components: Increases longevity by reducing oxidation and wear in harsh environments.
3. Industrial Applications
- Metal Processing Equipment: Protects hot-working tools, rollers, and molds from thermal degradation.
- Petrochemical & Chemical Plants: Applied to heat exchangers and furnace components to extend service life.
- Marine & Naval Components: Prevents high-temperature corrosion in ship exhaust systems and engine parts.
4. Thermal Spray Coating Processes
- Plasma Spray (APS & VPS): Commonly applied using Air Plasma Spray (APS) or Vacuum Plasma Spray (VPS) techniques to achieve dense, uniform coatings.
- High-Velocity Oxygen Fuel (HVOF) Spraying: Enhances adhesion and coating density, providing superior oxidation resistance.
NiCoCrAlY Spherical Alloy Powder Packing
Our NiCoCrAlY Spherical Alloy Powder is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
FAQs
Q1. What is NiCoCrAlY Thermal Spray Powder?
NiCoCrAlY is a high-performance MCrAlY coating material (where M represents Ni and/or Co) designed for thermal spray applications. It offers oxidation, corrosion, and thermal barrier protection for components exposed to high temperatures in aerospace, power generation, and industrial environments.
Q2. What are the main benefits of using NiCoCrAlY coatings?
- Exceptional High-Temperature Oxidation Resistance: Enhances the durability of components subjected to extreme temperatures.
- Superior Hot Corrosion Protection: Provides robust defense in harsh environmental conditions.
- Enhanced Adhesion and Mechanical Strength: Ensures long-lasting coatings with strong bond integrity.
- Improved Thermal Fatigue Resistance: Prevents failure due to repeated thermal cycling.
- Extended Component Lifespan: Increases the operational life of gas turbines, aerospace engines, and industrial machinery.
Q3. What thermal spray processes are used for NiCoCrAlY coatings?
NiCoCrAlY powder is typically applied using the following thermal spray processes:
- Plasma Spray (APS & VPS): Delivers uniform, dense coatings with high adhesion properties.
- High-Velocity Oxygen Fuel (HVOF) Spraying: Produces dense, smooth coatings that offer excellent wear and oxidation resistance.
