Nickel Alloys Metal Powder

Innehållsförteckning

Nickel alloys metal powders refer to powder metallurgy forms of various nickel alloy compositions. These powders can be used to manufacture nickel alloy parts and components through methods like metal injection molding, additive manufacturing, and powder pressing and sintering.

Overview of Nickel Alloys Metal Powder

Nickel alloy powders provide unique properties like high strength, corrosion resistance, and high temperature performance. Key details include:

Fördelar

  • Hög hållfasthet
  • Korrosions- och oxidationsbeständighet
  • Stabilitet vid hög temperatur
  • Tailored electrical, magnetic, or thermal properties
  • Lower costs than exotic alloy ingots

Manufacturing Methods

  • Atomisering av gas
  • Atomisering av vatten
  • Karbonylprocess
  • Elektrolys
  • Mechanical grinding

Common Alloy Systems

  • Nickel-krom
  • Nickel-molybdenum
  • Nickel-cobalt
  • Nickel-iron-chromium
  • Nickel-copper
  • Nickel-aluminum

Typiska tillämpningar

  • Komponenter för flyg- och rymdindustrin
  • Industriella verktyg
  • Reservdelar till fordon
  • Elektriska kontakter
  • Corrosion resistant structures
  • Delar till högtemperaturugnar

Specifikationer

Nickel alloy powders are available in various standard specifications:

  • Size range: 1 – 150 microns
  • Chemistry per application need
  • Spherical, irregular, or blended morphology
  • Gas or water atomized varieties
  • Custom alloys and particle size possible
nickel alloys metal powder

Types of Nickel Alloy Metal Powder

Many nickel alloys are available in powder form. Common alloy systems include:

LegeringstypKompositionerViktiga egenskaper
Nickel-kromNi-Cr, Ni-Cr-Fe-MoOxidation resistance, strength at high temperatures
Nickel-MolybdenumNi-MoCorrosion resistance, maintain strength at high temperatures
Nickel-CobaltNi-CoHigh strength, corrosion resistance, tailorable magnetic permeability
Nickel-Iron-ChromiumNi-Fe-Cr, Ni-Cr-Fe-Mo-CuExcellent oxidation and corrosion resistance at high temperatures
Nickel-CopperNi-CuHigh strength, corrosion resistance, tailorable thermal expansion
Nickel-AluminumNi-AlLightweight, high temperature strength

These alloy powder compositions can be customized to achieve application specific properties.

Characteristics and Properties of Nickel Alloys Metal Powder

Nickel alloy powders offer a versatile range of mechanical, physical, and chemical properties:

Mekaniska egenskaper

  • Hög hållfasthet
  • Resistance to creep and fatigue
  • Withstand repeated heating/cooling cycles
  • Slagseghet

Fysikaliska egenskaper

  • Coefficients of thermal expansion similar to steel
  • Electrical resistivity tailored with chromium content
  • Controlled magnetic permeability with iron and cobalt

Kemiska egenskaper

  • Resist corrosion in harsh environs like acids, chlorides etc
  • Retain properties in oxidizing atmospheres up to 2000°F
  • Welding characteristics similar to wrought nickel alloys

These properties make nickel alloys suitable for demanding applications across industries.

Applications and Uses of Nickel Alloy Metal Powder

Nickel alloy powders are used across industries where combination of properties is needed:

IndustriTillämpningarBenefits Provided
Flyg- och rymdindustrinTurbine blades, engine parts, airframe componentsStrength at high temperatures, corrosion resistance
Olja och gasValves, fittings, wellhead componentsStrength, wear resistance, corrosion resistance at high temperatures and pressures
FordonGears, shafts, exhaust components, turbocharger partsHeat and wear resistance for powertrain parts
IndustriellFood processing equipment, pulp and paper machine parts, radiation shieldsCorrosion resistance, high temperature strength, safety
ElektronikConnectors, lead frames, switches, shieldsConductivity, magnetism control, resistance welding
KemiskPumps, valves, pipingCorrosion resistance against various chemicals

These applications utilize the balanced mechanical and chemical properties of nickel alloys.

Specifications of Nickel Alloy Metal Powder

Nickel alloy powders are produced in various standard specifications suitable for different manufacturing techniques:

SpecAlternativ
LegeringsklassIN, N, CN nickel grades plus proprietary compositions
Partikelstorlek1-10 μm, 10-45 μm, 45-100 μm, 15-150 μm
MorfologiSpherical, irregular/angular
ProduktionsmetodGas atomized, water atomized, carbonyl
RenhetNickel + alloying elements, low oxygen + nitrogen, custom impurity limits
FörpackningJars, bags, drums under inert atmosphere

These specifications allow selection of optimal powder for given production method like metal injection molding, pressing and sintering, additive manufacturing etc.

Suppliers and Pricing of Nickel Alloy Metal Powder

Most major metal powder producers offer various nickel alloy powder compositions and size ranges suitable for industrial production. Some leading global suppliers are:

FöretagVarumärkenProduktionsmetoderTypical Pricing
SandvikOspreyAtomisering av gas och vatten$$$
SnickeriteknikOlikaAtomisering av gas och vatten$$$
ATI PulvermetallOlikaAtomisering av gas och vatten$$$
Praxair YtteknologiOlikaAtomisering av gas$$$
HoganasOlikaAtomisering av gas och vatten$$-$$$
CNPC Powder GroupOlikaAtomisering av gas och vatten$-$$

Pricing can range widely based on alloy chemistry, powder size, quality levels, production method etc. Typical range is $50-$150 per kg for common alloys and sizes.

Pros and Cons of Nickel Alloy Metal Powder

vs Wrought Materials

Nickel alloy powder offers some distinct advantages but also limitations compared to wrought forms:

Fördelar

  • Components with complex shapes made easily
  • Homogeneous microstructure from rapid solidification
  • Near shape construction lowers machining needs
  • Lower costs than equivalent alloy mill shapes

Nackdelar

  • Post-processing may be needed after part making
  • Size and geometry constraints for some methods
  • Powder production has higher energy needs
  • Secondary operations add cost versus castings
  • Lower maximum strength level than wrought alloys

The balance of properties and economics determines optimal material form for a given application.

nickel alloys metal powder

Vanliga frågor

Q: What are the main alloying elements used in nickel powders?

A: The most common alloy additions are chromium, molybdenum, iron, cobalt, copper, and aluminum to achieve desired properties.

Q: What powder production methods are used for nickel alloys?

A: Gas atomization and water atomization are the primary techniques. Some nickel alloys are also made via carbonyl powder production.

Q: What particle size range is typical for nickel alloy powder?

A: Most powders fall between 1 micron to 150 microns. Finer powders below 45 microns are used for sintering and metal injection molding. Coarser particles from 45-150 microns suit pressing and extrusion or additive manufacturing.

Q: How do costs of nickel alloy powder compare to wrought materials?

A: Nickel alloy powders can offer 30-50% cost savings over forged billets or bar. But secondary processing after powder consolidation may lower the cost benefit ratio.

Q: What standards apply to nickel alloy powders?

A: ASTM, ISO, and other national standards help define chemistry, impurity limits, particle size distribution, and sampling methods for quality control.

Slutsats

Nickel alloy metal powders provide a versatile material option combining high strength, corrosion resistance, thermal stability and other tailored properties. Key alloy systems include nickel-chromium, nickel-molybdenum and nickel-iron-chromium among others. These advanced powders enable manufacturing of critical components across aerospace, oil and gas, automotive and industrial sectors. With expanded use of powder metallurgy techniques, nickel alloys continue seeing rapid adoption via metal injection molding, additive techniques and press-and-sinter methods.

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