Spherical Tantalum Powder (Ta)

Spherical Tantalum Powder Price & List

Spec.	Shape	Particle Size	Application
Ta-DS045	Spherical	15-45 um	3D printing / additive manufacturing
Ta-DS053	Spherical	15-53 um	3D printing / additive manufacturing
Ta-DS105	Spherical	45-105 um	3D printing / additive manufacturing
Ta-DS150	Spherical	45-150 um	3D printing / additive manufacturing
Customizable	Spherical	Customizable	3D printing / additive manufacturing

Note: We provide customized service. If you don't find the powder you want, please send us an email directly. We can customize it according to your requirements.

Spherical Tantalum Powder

Tantalum powder is a metallic tantalum in the form of a powder, typically appearing as a dark gray or steel-gray powder. It is an extremely important high-melting-point rare metal raw material and is considered a key strategic material in high-tech fields such as electronics, metallurgy, and medical applications due to its unparalleled corrosion resistance, excellent capacitor performance, and biocompatibility.

Basic Characteristics

Physical Properties:
Extremely high melting point: Up to 3017°C, making it one of the most important refractory metals.
High density: Approximately 16.4 g/cm³.
Good ductility: Similar to vanadium, bulk tantalum has good ductility, but in powder form, it is brittle.
Ductility: Bulk metallic tantalum has excellent ductility.
Chemical Properties:
Excellent corrosion resistance: Tantalum has extremely high chemical stability, second only to platinum and gold. Especially at room temperature, it can resist corrosion by almost all inorganic acids, including aqua regia, hydrochloric acid, nitric acid, and sulfuric acid. This property is its most prominent advantage.
Passivation: A dense oxide film (tantalum pentoxide, Ta₂O₅) forms on the surface. This film is very stable and is the basis for tantalum's function in electrolytic capacitors.
High-temperature reactivity: At high temperatures, it can react with elements such as oxygen, carbon, and nitrogen.

Spherical Tantalum Powder

Spherical tantalum powder refers to metallic tantalum powder with a regular spherical particle morphology produced through special processes. It is a high-end product among tantalum powders, which not only retains the excellent corrosion resistance, high biocompatibility, and superior capacitor performance of metallic tantalum but also possesses exceptional flowability and high packing density due to its unique spherical morphology. It is primarily used in cutting-edge fields such as electronic component manufacturing and additive manufacturing (3D printing), where extremely high powder performance is required.

Basic Characteristics

Advantages of Physical Morphology:
High Fluidity: Spherical particles allow them to flow like miniature bearings, which is crucial in automated powder spreading processes (e.g., 3D printing, capacitor anode block pressing), ensuring product consistency and quality.
High Tap Density: Spherical particles can be densely packed, achieving higher volumetric density, which helps in manufacturing denser and stronger components or anode blocks.
Low Specific Surface Area and Low Oxygen Content: Compared to irregular tantalum powder, spherical powder of the same weight has a smaller surface area, meaning less adsorbed oxygen on the surface. Low oxygen content is critical for ensuring the electrical performance (e.g., capacitor leakage current) and mechanical properties of the final product.
Smooth Surface: The particles have a smooth surface and few internal pores, facilitating the formation of uniform sintering necks and improving the densification degree of the product.
Chemical Properties:
Inherits all the excellent characteristics of bulk tantalum: extremely high corrosion resistance (resistant to almost all acids except hydrofluoric acid and hot concentrated sulfuric acid), excellent biocompatibility, and stable dielectric properties (capable of forming high-quality tantalum oxide films).

Main Preparation Methods

Plasma Atomization:
The mainstream method for producing high-purity spherical tantalum powder. Tantalum metal wire or rod is fed into a high-temperature plasma torch, where it is instantly melted and atomized into micron-sized droplets. The droplets spheroidize under surface tension and cool into spherical powder. This method offers good control over product purity, sphericity, and particle size distribution.
Electron Beam Atomization:
In a high-vacuum environment, a high-energy electron beam bombards the tantalum raw material, causing it to melt and drip or flow. The droplets spheroidize and solidify during flight. This method effectively controls interstitial element content (e.g., oxygen, nitrogen), yielding extremely high-purity powder, but at a very high cost.
Plasma Rotating Electrode Process (PREP):
A high-purity tantalum electrode rod is rotated at high speed while its end face is melted by a plasma torch. The molten droplets are ejected by centrifugal force and spheroidized. Powder produced by this method has good sphericity and almost no hollow particles, but the yield is relatively low.
Radio Frequency (RF) Induction Plasma Spheroidization:
Irregularly shaped raw tantalum powder is fed into an RF induction plasma, where the particles instantly absorb heat and melt, spheroidizing under surface tension before rapidly cooling. This is an effective method for upgrading lower-grade powder into spherical powder.

Spherical Tantalum Powder Application

Spherical tantalum powder primarily targets high-performance and high-reliability premium markets. The specific applications are as follows:
High-Performance Tantalum Capacitors (Core Application):
Used to manufacture the anodes of ultra-high capacitance tantalum electrolytic capacitors. The high flowability and high packing density of spherical tantalum powder enable the pressed anode blocks to be more uniform and denser. After sintering, a more ideal porous structure can be formed. This allows for greater capacitance in a smaller volume, meeting the demands for miniaturization and high capacitance in electronic products (especially smartphones, aerospace electronics).
Metal Additive Manufacturing (3D Printing):
Used in technologies such as Selective Laser Melting (SLM) or Electron Beam Melting (EBM) to directly manufacture complex-structured pure tantalum or tantalum alloy components.
Medical Implants: Printing customized bone implants (e.g., cranial repair plates, maxillofacial implants), utilizing tantalum's excellent biocompatibility and elastic modulus similar to bone tissue.
Chemical Corrosion-Resistant Components: Manufacturing complex-shaped corrosion-resistant parts for chemical equipment that are difficult to produce using traditional methods.
Aerospace: Manufacturing high-temperature-resistant rocket nozzles, engine components, etc.
Thermal Spray Coatings:
Using technologies like Atmospheric Plasma Spraying (APS) to prepare pure tantalum or tantalum alloy coatings on substrate surfaces, providing protection in extremely corrosive environments (e.g., chemical reactors, boats, crucibles).
High-End Powder Metallurgy:
Using the Metal Injection Molding (MIM) process to manufacture small, complex, and high-precision tantalum parts, such as surgical instrument components and watch accessories.
 

Spec.	Shape	Particle Size	Application
Ta-DS045	Spherical	15-45 um	3D printing / additive manufacturing
Ta-DS053	Spherical	15-53 um	3D printing / additive manufacturing
Ta-DS105	Spherical	45-105 um	3D printing / additive manufacturing
Ta-DS150	Spherical	45-150 um	3D printing / additive manufacturing
Customizable	Spherical	Customizable	3D printing / additive manufacturing

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