Prášky ze slitiny titanu a molybdenu

práškové slitiny titanu a molybdenu enhance high-temperature strength and creep resistance for lightweight aerospace designs. This guide reviews TiMo alloy powder compositions, key characteristics, production methods, suitable applications, specifications, purchasing considerations, supplier comparisons, and pros/cons.

práškové slitiny titanu a molybdenu Typické složení

Stupeň slitiny	Titan (%)	Molybden (%)
Ti-6Al-7Nb (IMI 550)	Zůstatek	7%
Ti-15Mo-3Nb-3Al-0.2Si	Zůstatek	15%
Ti-11.5Mo-6Zr-4.5Sn (Ti-11)	Zůstatek	11.5%
Ti-15Mo-5Zr-3Al	Zůstatek	15%

Molybdenum levels between 7% and 15% effective for high-temperature strengthening. Other elements like niobium, zirconium, and tin further boost creep properties.

Charakteristika a vlastnosti

Atribut	Podrobnosti
Tvar částic	Spherical from inert gas atomization
Kyslík ppm	Pod 500 ppm
Typical density	4,5 g/cc
Tepelná vodivost	4-6 W/mK
Pevnost při vysokých teplotách	100 MPa at 500°C
Odolnost proti korozi	Forms protective TiO2 film

Particulate nature, low oxygen content and tailored compositions suit alloy powder for additive manufacturing or sintering high performance components.

Výrobní metody

Metoda	Popis procesu
Rozprašování plynu	Inert gas disintegrates molten alloy stream into powder
Plazmová atomizace	Very clean but lower powder output vs gas atomization
PREP	Spheroidization of existing powders by remelting
Hydrid-dehydrid	Brittle TiH2 intermediate for comminution

Plasma and gas atomization offer the best quality while being more expensive vs secondary routes like PREP and HDH.

Applications of TiMo Alloy Powder

Průmysl	Příklady součástí
Aerospace	Turbine blades, casings, landing gears
Výroba energie	Heat exchangers, steam piping
Chemické zpracování	Bioreactors, reaction vessels
Námořní	Propeller shafts, sonar domes
Oil and gas drilling	Geothermal well tools and shafts

Combination of high strength, low weight and corrosion resistance suits TiMo alloys with demanding environments like aircraft engines or offshore drilling.

Specifikace

Standard	Třídy, na které se vztahuje
ASTM B862	Ti-6Al-2Sn-4Zr-6Mo, Ti-8Al-1Mo-1V, Ti-6Al-2Nb-1Ta-0.8Mo
ASTM B348	Titanium and titanium alloy bars and billets
AIMS 04-18	Standard for AM titanium parts

AMPM (American Powder Metallurgy) Institute, IPS (International Powder Metallurgy Standards Organization) also cover various Ti grades.

Globální dodavatelé a cenové rozpětí

Společnost	Doba realizace	Stanovení cen
Technika TLS	16 týdnů	$300 – $900/kg
Sandvik	12 týdnů	$350 – $1000/kg
Vybavení společnosti Atlantic	14 weeks	$320 – $850/kg

Pricing for 100+ kg batch. Premium for low oxygen and spherical powder. Larger quantities above 500 kg offer 20%+ discounts.

Výhody vs. nevýhody

Výhody	Výzvy
Vynikající pevnost při vysokých teplotách	High raw material costs
Corrosion resistant in many environments	Longer lead times for custom alloys
Custom alloy design flexibility	Limited global supply chain presently
Compatible with powder AM methods	Post-processing often needed after AM
Vynikající odolnost proti tečení	Stringent requirements on oxygen/nitrogen

TiMo powders enable new component designs and lightweight construction but using titanium alloys poses unique powder manufacturing and handling challenges.

FAQ

What particle size range is optimal for binder jet 3D printing?

Around 30 to 50 microns facilitates higher powder bed density and efficient liquid saturation needed to bind layers properly. Too fine powders hurt performance.

What causes contamination during Ti alloy gas atomization?

Oxygen pickup from any air leaks degrades powder purity hence the need for stringent process controls. Furnace parting agents and melt crucibles are other contamination sources requiring high purity consumables.

Why is high Mo content difficult to achieve in Ti based alloys?

Excessive evaporation losses of molybdenum occur above 25% levels during vacuum induction melting and subsequent remelting steps. Mitigation measures include covering melt pools or using cold crucible techniques.

Jak se má titanový prášek skladovat?

Inside sealed containers under inert cover gas or vacuum. Handled and stored to exclude moisture absorption which causes decrepitation and high osyggen or nitrogen impurity.

What are common defects when AM printing titanium alloys?

Porosity from trapped gas atoms, lack of fusion defects, residual stress cracking, unfused powder trapped inside enclosed volumes. Require integrated parameters optimisation accounting for scan strategy, energy input etc.

Závěr

Shrnutí, práškové slitiny titanu a molybdenu provide customized high temperature properties and corrosion resistance vital for producing next generation components across aerospace, energy and other demanding industries via powder metallurgy or additive manufacturing.

znát více procesů 3D tisku