CoNiCrAlY,E FORU

### **Product Introduction: CoNiCrAlY Alloy** **CoNiCrAlY Alloy** is a premium cobalt-nickel-chromium-aluminum-yttrium overlay coating material specifically designed for extreme high-temperature applications. This sophisticated alloy belongs to the MCrAlY family (where M represents Co, Ni, or their combination) and is engineered to provide exceptional oxidation resistance, hot corrosion protection, and thermal stability in the most demanding operating environments. Primarily used as a bond coat in Thermal Barrier Coating (TBC) systems or as a standalone overlay coating, CoNiCrAlY offers superior performance in gas turbine engines and other high-temperature systems where component longevity and reliability are critical. --- #### **Key Features & Advantages** * **Excellent Oxidation Resistance**: Forms a protective, slow-growing alumina (Al₂O₃) scale at elevated temperatures * **Superior Hot Corrosion Resistance**: Withstands sulfidation and other forms of hot corrosion in aggressive environments * **Outstanding Thermal Fatigue Resistance**: Maintains coating integrity under severe thermal cycling conditions * **Good Ductility and Strain Tolerance**: Accommodates thermal expansion mismatches between coating and substrate * **Optimized Microstructure**: Balanced composition ensures long-term stability and performance * **Versatile Application Methods**: Suitable for various thermal spray and deposition processes --- #### **Chemical Composition (Typical Weight %)** | Element | Content Range (%) | Primary Function | |---------|-------------------|------------------| | **Cobalt (Co)** | 30-40 | Enhances hot corrosion resistance, provides matrix strength | | **Nickel (Ni)** | 25-35 | Improves ductility and oxidation resistance | | **Chromium (Cr)** | 18-22 | Provides oxidation and corrosion resistance | | **Aluminum (Al)** | 8-12 | Forms protective Al₂O₃ scale | | **Yttrium (Y)** | 0.3-0.7 | Improves scale adhesion and coating durability | | **Other Elements** | ≤ 0.5 | Trace elements for specific property enhancement | --- #### **Physical Properties** | Property | Typical Value | Conditions/Notes | |----------|---------------|------------------| | **Density** | 7.8 - 8.1 g/cm³ | Theoretical density | | **Melting Range** | 1280 - 1380 °C | - | | **Thermal Expansion Coefficient** | 13.5 - 15.0 × 10⁻⁶/°C | 20-1100°C range | | **Thermal Conductivity** | 12 - 16 W/m·K | At 800°C | | **Young's Modulus** | 180 - 220 GPa | At room temperature | --- #### **Mechanical Properties (Coating Characteristics)** | Property | Typical Value | Test Method/Notes | |----------|---------------|-------------------| | **Coating Hardness** | 300 - 450 HV₃₀₀ | As-sprayed condition | | **Bond Strength** | > 70 MPa | ASTM C633 | | **Porosity** | < 2% | Optimized spray parameters | | **Oxidation Rate** | < 0.5 mg²/cm⁴h | 1100°C, 100 hours | --- #### **International Standards** * **AMS 4778**: Nickel Alloy, Corrosion and Heat-Resistant, Coatings, Powder for Plasma Spraying * **AMS 4779**: Nickel Alloy, Corrosion and Heat-Resistant, Coatings, Powder for HVOF Spraying * **ASTM B214**: Standard for Sieve Analysis of Metal Powders * **ASTM B213**: Standard for Flow Rate of Metal Powders * **ISO 14919**: Thermal spraying - Wires, rods and cords for flame and arc spraying * **OEM Specifications**: GE, Rolls-Royce, Pratt & Whitney, Siemens specific standards --- #### **Product Applications** **Aerospace Industry:** - Bond coat for Thermal Barrier Coatings on turbine blades and vanes - Combustor liner protection in jet engines - Nozzle guide vane coatings - Afterburner components - Turbine shroud applications **Power Generation:** - Industrial gas turbine blade and vane coatings - Combustor protection in land-based turbines - Heat shield coatings - Transition piece protection - Boiler tube coatings in advanced power systems **Industrial Applications:** - Chemical processing equipment - Heat treatment furnace components - Nuclear reactor components - High-temperature sensor protection - Petrochemical refinery components --- #### **Available Product Forms** **Powder Specifications:** - **Gas Atomized Spherical Powder** - **Particle Size Ranges**: - -45/+15 μm for high-quality coatings - -75/+45 μm for standard applications - -106/+45 μm for high-deposition rates **Other Forms:** - **Sputtering Targets** for Physical Vapor Deposition (PVD) - **Wire** for arc spray applications - **Pre-alloyed Ingots** for special processes --- #### **Coating Processes** * **Atmospheric Plasma Spray (APS)** * **Low Pressure Plasma Spray (LPPS)** * **High Velocity Oxygen Fuel (HVOF)** * **Electron Beam Physical Vapor Deposition (EB-PVD)** * **Cold Spray** * **Detonation Gun Spraying** --- **Disclaimer:** *The information provided is for technical reference purposes only. Actual coating performance depends on numerous factors including substrate material, surface preparation, coating parameters, heat treatment, and specific service conditions. Users should conduct comprehensive testing and evaluation to determine suitability for particular applications. Always follow manufacturer's recommendations, safety guidelines, and applicable industry standards.*

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3095 gallon liquid totes Special package is available on request.