Co 25.5Cr 10.5Ni 7.5W 0.5C Powder Description:
Co 25.5Cr 10.5Ni 7.5W 0.5C Powder is a specialized cobalt alloy featuring molybdenum, chromium, and silicon. This alloy is distinguished by its formation of hard precipitates, specifically cobalt-molybdenum-silicon-based intermetallic Laves phases, dispersed within a softer cobalt-based matrix. These unique properties confer exceptional corrosion and oxidation resistance, excellent abrasive wear resistance, and high service temperature capability with good hot hardness. Notably, the coatings produced from this powder exhibit a low coefficient of friction, making them particularly suitable for applications where lubrication is minimal or absent. While typically applied using atmospheric plasma spray or combustion powder spray methods, the resulting coatings benefit from subsequent high-temperature annealing to improve their properties further. These coatings can withstand oxidation in atmospheric conditions up to 760°C.
Co 25.5Cr 10.5Ni 7.5W 0.5C Powder Specifications:
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Nominal Chemistry
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Co 25.5Cr 10.5Ni 7.5W 0.5C
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Nom. Particle Size Distr.(µm)
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-45 +10
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Morphology
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Irregular
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Range of Apparent Density (g/cm3)
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4.2
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Max. Service Temperature (°C)
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760
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Melting Temperature (°C)
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1230
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Co 25.5Cr 10.5Ni 7.5W 0.5C Powder Applications:
1. Aerospace: Used in turbine engines and other high-temperature components due to its excellent oxidation and wear resistance.
2. Energy Industry: Suitable for components in power generation, particularly in gas and steam turbines where high-temperature performance and resistance to corrosion and wear are crucial.
3. Automotive: Applied to parts that experience high friction and require minimal lubrication, such as engine components and exhaust systems.
4. Industrial Machinery: Used in manufacturing equipment, especially those exposed to abrasive environments and high temperatures, such as pumps, valves, and tooling.
5. Medical Devices: Employed in surgical tools and implants where biocompatibility and resistance to wear are essential.
6. Oil and Gas: Applied to drilling equipment and pipelines that must withstand corrosive environments and high mechanical stresses.
Co 25.5Cr 10.5Ni 7.5W 0.5C Powder Packing:
Our Co 25.5Cr 10.5Ni 7.5W 0.5C Powder is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
Co 25.5Cr 10.5Ni 7.5W 0.5C Powder FAQ:
Q1: What benefits do Laves phases provide in this alloy?
A1: Laves phases are hard precipitates that enhance the alloy's wear resistance and contribute to its overall mechanical strength and durability, especially at high temperatures.
Q2: Can this powder be used in environments with low or no lubrication?
A2: Yes, coatings made from this powder exhibit a low coefficient of friction, making them particularly suitable for applications where lubrication is low or non-existent.
Q3: How does the coating performance compare between different application methods?
A3: Coatings applied using HVOF generally have higher macrohardness, microhardness, bond strength, and deposit efficiencies compared to those applied using atmospheric plasma spray or combustion powder spray methods.
