Powder metallurgy is one of the leading manufacturing principles in modern engineering. It encompasses a range of densification methodologies from isostatic pressing to plasma spray coating where temperature and/or compression is used to increase density in challenging starting materials. This is incredibly valuable in pushing the boundaries of component performance and design.

Our Molybdenum Powders for PM Markets

At H.C. Starck Solutions, we have devoted years of technical innovation to developing advanced PM techniques suitable for working some of the most challenging technical materials available. Based on our unmatched experience with refractory metals manufacturing, we now offer a range of high-performance molybdenum powders suitable for various end-use scenarios.

One of the core challenges of powder metallurgy is the time and effort expended on yielding a high-purity starting material compatible with optimal physicochemical properties. The molybdenum starting chemicals are precisely controlled and processing conditions are carefully controlled to closely target a specific metal powder particle size. Plus, the mean particle size distribution (PSD) cannot extend over too wide a range. Failure to achieve any of these quality metrics could cause poor densification thus higher porosity than desired, geometric inhomogeneities, and could even contribute to damage of critical processing equipment.

Spray_dried_Mo_powder_2

Spray-dried molybdenum powder with a highly uniform particle size distribution (PSD)

Our precision molybdenum powders are engineered to the most stringent quality assurance and control parameters. We generate our powders via hydrogen reduction of pure molybdenum trioxide (MO3) and ammonium dimolybdate (ADM) in a two-stage high-temperature process. This enables us to generate extremely high-purity molybdenum powders with mean particle sizes that can range between 3 – 30 micrometers (µm), and finely-tuned morphological properties according to customer specifications.

Powders for Molybdenum Alloys

Offering unmatched control over critical design parameters (chemistry, form, microstructure, porosity, etc.), PM techniques like iso-pressing and sintering enable the accurate and cost-effective fabrication of precision workpieces using technical-grade starting materials. These include pure molybdenum powders and complex alloys like titanium-zirconium-molybdenum (TZM).

Our TZM alloys are wrought from the highest-quality starting powders and can be consolidated via typical PM methods or vacuum arc casting (VAC). Each technique yields an extremely strong finished part (560 – 1150MPa) with exceptional thermal properties, such as maximum use temperatures of up to 1400°C in vacuum.

Looking for Quality-Assured Molybdenum Powders?

Additionally, we have created a range of molybdenum-lanthanum oxide (MoLa) powders for applications requiring high working temperatures. High lanthana MoLa alloys (<1.1 wt%) can withstand peak temperatures of 1900°C. We are finding increased interest in our high lanthana molybdenum powders for advanced additive manufacturing applications and rapid prototyping.

Molybdenum Powders for Thermal Spraying

Like PM methods, thermal spray techniques use extreme temperatures to consolidate high-performance ceramic or metallic powders. The difference being that spray coating is used to deposit the densified ceramic/metal as a thin film on the surface of a workpiece. Molybdenum powders are desirable for thermal spray coating as they can impart superior corrosion-resistant, thermal, and mechanical properties to the work surface. We supply a variety of molybdenum powder grades based on different size specifications (ranging from coarse to fine) to professionals in an every-growing range of application bases, from aircraft to automotive to mining.

For more information on any of the molybdenum powders discussed in this article, contact a member of the H.C. Starck Solutions sales team today. We would be happy to talk specifications, applications, and our extensive capabilities in modern PM manufacturing.