CoCrFeNi Powder

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CoCrFeNi Powder

Product CoCrFeNi Powder
CAS No. N/A
Appearance Spherical Powder
Purity ≥99%,  ≥99.9%,  ≥95%(Other purities are also available)
APS 1-5 µM, 10-53 µM  (Can be customized),  Ask for other available size range.
Ingredient Co-Cr-Fe-Ni
Density 7.5-8.3g/cm3
Molecular Weight N/A
Product Codes NCZ-DCY-210/25

CoCrFeNi Description:

CoCrFeNi Powder is one of the numerous advanced ceramic materials manufactured by Nanochemazone. Nanochemazone produces too many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information are available. Please request a quote above for more information on lead time and pricing

CoCrFeNi Powder Related Information :

Storage Conditions:

Airtight sealed, avoid light and keep dry at room temperature.

Please contact us for customization and price inquiry

Email: contact@nanochemazone.com

Note: We supply different size ranges of Nano and micron as per the client’s requirements and also accept customization in various parameters.

CoCrFeNi Powder

CoCrFeNi powder, also known as CoCrFeNiMn powder or high entropy alloy (HEA) powder, refers to a material composed of cobalt, chromium, iron, and nickel elements in near-equiatomic ratios. This novel alloy powder displays exceptional properties compared to conventional alloys and has garnered significant interest for various applications.

Overview of CoCrFeNi Powder

CoCrFeNi powder, also known as CoCrFeNiMn powder or high entropy alloy (HEA) powder, refers to a material composed of cobalt, chromium, iron, and nickel elements in near-equiatomic ratios. This novel alloy powder displays exceptional properties compared to conventional alloys and has garnered significant interest for various applications.

Some key features of CoCrFeNi powder include:

High configurational entropy leading to outstanding strength, hardness, thermal stability, and corrosion resistance

Single solid-solution FCC phase microstructure

Excellent strength-ductility combination

High fracture toughness

Good machinability and formability

Resistance to softening at elevated temperatures

Customizable with minor additions of elements like manganese

The unique disorder in the atomic arrangement of CoCrFeNi imparts superior mechanical performance. The near-equal concentrations of the main elements hinder dislocation movement, improving hardness. The multiphase structure provides solid solution strengthening through lattice strain effects.

Composition of CoCrFeNi Powder

The composition of CoCrFeNi HEA powder can be tailored but generally consists of:

Element Typical Composition Range
Cobalt (Co) 20-35 at.%
Chromium (Cr) 20-35 at.%
Iron (Fe) 20-35 at.%
Nickel (Ni) 20-35 at.%

The equiatomic ratio provides maximum configurational entropy but minor deviations do not significantly affect properties. Additions of 1-2 at.% of manganese are common to further improve properties through grain refinement and precipitation strengthening.

Properties of CoCrFeNi Powder

CoCrFeNi alloy powder exhibits a unique combination of outstanding properties:

Property Values
Density 7.5-8.3 g/cm3
Melting Point >1200°C
Microhardness 2.5-4 GPa
Ultimate Tensile Strength 500-1300 MPa
Yield Strength 200-1100 MPa
Elongation 10-60%
Young’s Modulus 150-250 GPa
Shear Modulus 65-85 GPa
Poisson’s Ratio 0.21-0.33
Fracture Toughness >100 MPa√m
Thermal Conductivity 10-30 W/mK
Electrical Resistivity 70-100 nΩm
Corrosion Resistance Excellent in various environments

The high hardness arises from solid solution strengthening while the FCC structure imparts good ductility. The properties can be tailored through composition adjustments and processing.

Characteristics of CoCrFeNi Powder

Some salient characteristics of CoCrFeNi alloy powder include:

Single phase FCC structure lacking intermetallic phases

Annealing twins and stacking faults present

Equiaxed powder morphology with good flowability

Powder size distribution ranging from 15-150 μm

High purity with low oxygen content

Spherical powder shape and smooth surface

Customizable powder size, shape, and composition

The powder exhibits high chemical homogeneity with a uniform distribution of alloying elements. The spherical morphology provides good packing and flow characteristics.

Applications of CoCrFeNi Powder

The exceptional combination of strength, toughness, and processability of CoCrFeNi powder makes it suitable for:

Additive Manufacturing: Excellent printability due to good flow and melting characteristics. Used for aerospace, tooling, and biomedical implants.

Thermal Spray Coatings: Resistance to wear, corrosion, and thermal softening. Coatings for mechanical, marine, and chemical applications.

Alloy Development: Base material for new high entropy alloys with additions of Al, Ti, etc.

Metal Injection Molding: High stiffness parts with good dimensional stability for aviation and automotive.

Powder Metallurgy: High performance P/M parts with balanced strength and ductility.

Cryogenic Applications: Retention of ductility and toughness at subzero temperatures.

Specifications of CoCrFeNi Powder

CoCrFeNi alloy powder is available in various size ranges, compositions, and forms:

Parameter Variants
Size range 15-25 μm, 25-45 μm, 45-75 μm, 75-105 μm, 105-150 μm
Composition Equiatomic, custom elemental ratios
Powder shape Spherical, irregular
Production method Gas/water atomization, mechanical alloying
Supply form Loose powder, sintered preforms

Larger powder sizes of 45-150 μm are preferred for thermal spray and metal injection molding. Finer 15-45 μm sizes are used for additive manufacturing. Powders can be customized in shape, size, oxygen content, and flowability.

Pros and Cons of CoCrFeNi Powder

Advantages Limitations
Outstanding strength and hardness High material costs due to Co and Ni
Excellent ductility and toughness Limited data on long-term performance
Good fabricability by AM, MIM, PM Processing challenges with microstructural control
Thermal and microstructural stability Composition must be precisely controlled
High corrosion and wear resistance Lower processability than conventional alloys
Retains strength at elevated temperatures Often requires HIP post-processing

CoCrFeNi HEA powder enables components with unmatched property combinations. However, the material and processing costs are high. Microstructure and properties depend heavily on precise composition control.

Comparison with Alternatives

Vs. Stainless Steel Powders

Higher strength and hardness

Superior wear and corrosion resistance

More expensive base material cost

Lower processability and weldability

Vs. Tool Steel Powders

Better ductility and fracture toughness

Lower high-temperature strength

Less established processing methods

Limited size and alloy variant availability

Vs. Inconel Superalloy Powders

Comparable high-temperature strength

Lower cost material

Shorter track record of performance

Restricted microstructural stability at very high temperatures

FAQs

Q: What is high entropy alloy (HEA) powder?

A: HEA powder contains multiple principal elements in near-equiatomic ratios to produce exceptional properties of strength, ductility, and stability. CoCrFeNi powder is a leading HEA.

Q: What are the typical sizes of CoCrFeNi powder available?

A: Common size ranges are 15-45 μm for AM, 45-105 μm for thermal spraying, and 105-150 μm for MIM and other applications. Finer and coarser sizes can be customized.

Q: What affects the price of CoCrFeNi alloy powder?

A: Powder size, composition, purity, production method, and order quantity determine pricing. Larger sizes over 100 μm cost less. Minor additions or tighter composition ranges increase cost.

Q: How is CoCrFeNi HEA powder produced?

A: Gas atomization and water atomization are the main production methods. The powder can also be made by mechanical alloying or cryomilling of prealloyed ingots.

Q: What are some example applications of CoCrFeNi powder?

A: Leading uses are additive manufacturing of tooling and aerospace components, thermal spray coatings for wear/corrosion resistance, alloy development, metal injection molding of automotive parts, and powder metallurgy of high-performance components.

Q: What are the key properties of CoCrFeNi HEA powder?

A: It exhibits an exceptional combination of high strength, hardness, ductility, fracture toughness, thermal stability, and corrosion resistance compared to conventional alloys.

Q: What are the limitations of CoCrFeNi powder?

A: High base material cost, processing challenges in controlling microstructure, limited long-term performance data, reduced weldability compared to steels are some disadvantages.

Q: How does CoCrFeNi powder compare with tool steels and stainless steels?

A: It has vastly higher strength and hardness but lower processability than stainless steels. Compared to tool steels, it provides superior fracture toughness and ductility.

Q: Is CoCrFeNi suitable for cryogenic applications?

A: Yes, it retains good ductility and toughness at sub-zero temperatures while conventional alloys become brittle. This makes it useful for cryogenic equipment.

Q: Can the composition of CoCrFeNi powder be customized?

A: Yes, suppliers can provide custom elemental ratios beyond the equiatomic composition. Common adjustments are 1-2 at.% Mn or Co additions to tailor the properties.

Description

Description
Note: For pricing & ordering information, please get in touch with us at sales@nanochemazone.com
Please contact us for quotes on Larger Quantities and customization. E-mail: contact@nanochemazone.com

Customization:
If you are planning to order large quantities for your industrial and academic needs, please note that customization of parameters (such as size, length, purity, functionalities, etc.) is available upon request.

NOTE:
Images, pictures, colors, particle sizes, purity, packing, descriptions, and specifications for the real and actual goods may differ. These are only used on the website for the purposes of reference, advertising, and portrayal. Please contact us via email at sales@nanochemazone.com or by phone at (+1 780 612 4177) if you have any questions.

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