Poeders van titaniumlegeringen: Samenstelling, productie en toepassingen

Inhoudsopgave

Poeders van titaniumlegeringen contain titanium as the main element combined with other metals like aluminum, vanadium or iron. The alloy composition imparts enhanced properties for uses across aerospace, medical devices and more.

Types of Titanium Alloy Powders

Common titanium alloy formulations in powder form:

LegeringTi InhoudAndere elementenBelangrijkste eigenschappen
Ti-6Al-4V90%6% Al, 4% VHoge sterkte, lage dichtheid
Ti-6Al-7Nb90%6% Al, 7% NbBiocompatibiliteit, corrosiebestendigheid
Ti-10V-2Fe-3Al82%10% V, 2% Fe, 3% AlHeat resistance, hardened
Ti-3Al-2,5V93%3% Al, 2.5% VElevated temperature strength
  • Titanium alloyed with aluminum, vanadium, iron and niobium balance hardness, strength and density
  • Specific elements tune mechanical, physical and biological properties for target applications
  • Mixtures optimize high temperature behavior, wear performance, weldability etc.
  • Aluminum stabilizes titanium crystal structure for workability; vanadium enhances strength

So tailored combinations of metals in titanium alloys achieve application-specific functional properties.

poeder van titaniumlegering
OLYMPUS DIGITALE CAMERA

Titanium Alloy Powder Production

Common techniques to produce titanium alloy powders:

MethodeProcesBeschrijvingDeeltjes Eigenschappen
GasvernevelingMolten stream impinges on gas jetsRapid cooling forms spherical particlesUitstekende stroombaarheid
Plasma-vernevelingHigher temperature plasma melts alloysVery fine spherical powder productionSub-micron sizes
Hydride-dehydrideHydride phase comminutionIrregular brittle particles from hydridesModerate flow
Mechanische legeringPowder particles deformation weldedComposite structure with fine grain sizeSlechte doorstroming
  • Gas and plasma atomization generate fine spherical alloy powders suitable for additive manufacturing
  • Hydride-dehydride method crushes brittle hydride phase into small particles
  • Mechanical alloying welds smaller particles into composite aggregates through deformation

So various techniques allow tailored titanium alloy particle sizes, shapes and internal microstructures.

Toepassingen van Titaniumlegeringspoeder

Titanium alloy powders enable high performance parts across sectors:

SectorSollicitatieEigenschappen gebruikt
Lucht- en ruimtevaartTurbine blades, airframe partsHoge specifieke sterkte
IndustrieelApparatuur voor voedselverwerkingCorrosieweerstand
AutomobielConnecting rods, valvesHittebestendig
BiomedischImplantaten, prothesesBiocompatibiliteit
VerdedigingArmor materialsBallistics protection
Additieve productie3D-geprinte onderdelenBedrukbaarheid
  • Lightweight strength allows fuel savings in aircraft and vehicles with titanium components
  • Bio-neutral titanium alloy implants avoid rejecting by the human body
  • Corrosion resistance suits aggressive chemicals in industrial plants
  • Alloy tailoring creates customer titanium grades for each application

So tailored titanium alloy powders enable advanced manufacturing across diverse demanding industries.

Specifying Titanium Alloy Powder

Key titanium alloy powder quality metrics:

ParameterTypische waardenTesting Method
Samenstelling van de legeringElement percentage by weightICP-spectroscopie
DeeltjesgrootteverdelingRange and average sizeLaserdiffractie
Schijnbare dichtheidUp to 85% of true densityScott-volumeter
Tik op dichtheidUp to 95% of true densityMeasured by tapping
DeeltjesvormSphericity, smoothnessSEM-beeldvorming
PoederstroomsnelheidAngle of repose, Hall flowmeterStandard test funnels/containers
  • Composition checks confirm percentages of titanium, aluminum, vanadium etc.
  • Particle size distribution ensures suitability for intended manufacturing process
  • Density indicates packing efficiency and porosity
  • Particle shape affects application performance and powder handling
  • Flow rates qualify suitability for automated transport and metering

So these metrics help ensure the purchased titanium alloy powder meets application requirements.

Comparing Titanium Alloy Powder Types

How do some titanium alloys measure up?

LegeringTi-6Al-4VTi-6Al-7NbTi-10V-2Fe-3Al
Dikte4,43 g/cc4,52 g/cc4.38 g/cc
Treksterkte128 ksi126 ksi115 ksi
Young's modulus16 msi10 msi15 msi
Maximale bedrijfstemperatuur700°F750°F800°F
BiocompatibiliteitGematigdUitstekendArm
KostenLaagHoogGematigd
  • Ti-6Al-4V is the workhorse titanium alloy combining performance and cost
  • Nb and Ta alloys offer superior biocompatibility for medical uses
  • Higher vanadium and Fe enable stability at elevated temperatures
  • Aluminum containing alloys have higher strength-to-weight ratio

So each titanium alloy formulation has specific advantageous properties for target applications.

Leveranciers van poeder van titaniumlegering

Leading global producers of titanium alloy powders:

BedrijfHoofdkantoorCijfers beschikbaarProductiecapaciteit
ATI-poedermetalenONSTi-6Al-4V, custom alloys5,000 metric tonnes/year
TeknaCanadaTi-6Al-4V and othersNot published
Hoganas GroupZwedenTi-6Al-4V3,000 metric tonnes/year
TLS-techniekDuitslandTiAl, TiAlNb, Ti powdersNot published
CNPC POWDERChinaTi-6Al-4V, TiAl10,000 metric tonnes/year
  • USA’s ATI Powder Metals is a leading producer of titanium alloy powders globally
  • Sweden’s Hoganas Group also operates significant titanium powder manufacturing
  • China hosts several large titanium alloy powder makers seeking global exports
  • Smaller players also participate in the growing titanium powder industry

So supply capacity continues scaling up to meet expanding demand for titanium alloys.

Titaniumlegeringspoeder Prijzen

Ballpark titanium alloy powder prices:

LegeringPricing per kgDeeltjesgroottebereik
Ti-6Al-4V$50 – $15015 tot 120 micron
Ti-6Al-7Nb$250 – $5005 to 45 microns
Ti-10V-2Fe-3Al$75 – $20015 to 63 microns
Ti-3Al-2,5V$100 – $15045 tot 150 micron
  • Prices depend heavily on buy volumes and particle size distribution specifics
  • Specialized alloys and fine medical grades fetch higher pricing
  • Ti-6Al-4V is most economically produced at industrial scales
  • Contracts over 5-10 tonnes receive discounted rates

So titanium alloy powder remains relatively expensive, limiting applications primarily to aerospace and defense sectors.

poeder van titaniumlegering

Titanium Alloy Powders FAQs

VraagAntwoord
What colors can titanium alloys be?Natural gray is most common. Colorizing surface treatments also applied.
Do the powders require special handling?Inert gas blanketing advisable to prevent oxidation while handling.
Is cold spraying possible with these powders?Yes, particle deformation enables high adhesion coatings.
Are titanium alloys non-magnetic?Yes, all grades have very low magnetic permeability.
Can these powders be safely shipped by air?Yes, no transport restrictions except for very fine reactive powders.

So titanium alloy powders lend themselves well to most metal powder handling, processing and coating operations.

Conclusie

In summary, titanium alloy powder provides the design flexibility to balance density, strength, modulus and biocompatibility for advanced engineering requirements across industries. Manufacturing techniques impart tailored particle characteristics. Alloy formulation allows custom property tuning. Despite relatively high prices over $50/kg, titanium alloy powder brings greater performance in defense, medical, aerospace and automotive applications where component performance overrides cost considerations.

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MET3DP Technology Co, LTD is een toonaangevende leverancier van additieve productieoplossingen met hoofdkantoor in Qingdao, China. Ons bedrijf is gespecialiseerd in 3D printapparatuur en hoogwaardige metaalpoeders voor industriële toepassingen.

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